NORTHROP GRUMMAN Patara EPL-016-QTG User manual

1
Patara End-Pumped Laser
EPL-016-QTG
Quick Installation Guide
SEPTEMBER 2019
CEO-UMAN-0098
REV B
Approved for Public Release; NG19-1901
© 2019 Cutting Edge Optronics, Inc.

© 2019 Cutting Edge Optronics, Inc. ii Patara End-Pumped Laser Quick Start Guide
Approved for Public Release; NG19-1901
Worldwide Technical Support and Product Information
http://www.northropgrumman.com/BusinessVentures/CEO/Pages/Service.aspx
http://www.ngceoservice.com/ (Knowledge Center)
Hours: 8:00 a.m. to 5:00 p.m., Central time*
Technical Support: [phone] (follow prompts for department directory)
Email: ngceoservice @ngc.com
Cutting Edge Optronics Headquarters
20 Point West Blvd. St. Charles, MO 63301 USA
Sales Support: [phone] (follow prompts for department directory)
*After office hours, please leave a voice mail message. Outside North America, contact a sales office or distributor; see the Cutting Edge
Optronics website for a list of offices.

© 2019 Cutting Edge Optronics, Inc. iii Patara End-Pumped Laser Quick Start Guide
Approved for Public Release; NG19-1901

© 2019 Cutting Edge Optronics, Inc. iv Patara End-Pumped Laser Quick Start Guide
Approved for Public Release; NG19-1901
Important Information
Copyright
Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical,
including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the
prior written consent of Cutting Edge Optronics.
Export
This laser product is regulated by the Export Administration Regulations (EAR) of the USA. It may not be exported/re-
exported without the prior written approval of the Bureau of Industry and Security, U.S. Department of Commerce.

© 2019 Cutting Edge Optronics, Inc. v Patara End-Pumped Laser Quick Start Guide
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Safety Information
Product End-of-Life Handling
Northrop Grumman is committed to protecting the environment. In accordance with the
Waste Electrical and Electronic Equipment directive (WEEE) and Restriction of Hazardous
Substances in the European Union (RoHS EU) directives, Northrop Grumman accepts the
return of our products for disposal. When reclaiming the instrument, it must properly
transferred according to local regulations concerning WEEE equipment. Contact Northrop
Grumman or a local distributor for shipping instructions. Please package the products as
directed for a return for repair.
ROC ROHS Declaration
In accordance with the Clause 6.2 of Marking for Control of Pollution Caused by
Electronic Information Products (SJ/T11364:2006) for Measures for the Administration
on Pollution Control of Electronic Information Products No. 39, Order of the Ministry of
Information Industry of the Peoples’Republic of China, Northrop Grumman includes the
following translation about our laser modules.

© 2019 Cutting Edge Optronics, Inc. vi Patara End-Pumped Laser Quick Start Guide
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Conventions
The following conventions appear in this manual:
This icon denotes a caution or a warning, which advise of precautions to take
to avoid injury, data loss, or a system crash.
Initial Capped
The first letter in uppercase refers to menu options, e.g., Phase Delay, Pulse
Width.
CAPS
Front-panel buttons, knobs, and connectors appear in all uppercase letters, e.g.,
MENU, CURRENT.

The symbol separates a sequence of button pushes, e.g., MENU 
CHANNEL SETUP PULSE WIDTH means pushing the MENU button,
then push the CHANNEL SETUP soft key, and then push the PULSE
WIDTH soft key.
italic
Italic text denotes references to other resources that may be helpful or to bring
attention to important information.
This icon denotes a note, which indicates important information.
I
O
Power Switch Position Symbols
I = On O = Off

© 2019 Cutting Edge Optronics, Inc. vii Patara End-Pumped Laser Quick Start Guide
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The following conventions may appear on the product:
DANGER
An injury hazard immediately accessible as the marking is read.
WARNING
A hazard not immediately accessible as the marking is read.
CAUTION
A hazard to property including the product.
ESD: Handle Appropriately
Laser Emission: Use caution.
Shock Hazard: Use caution.
Caution: Risk of danger. Refer to manual.
Chassis Ground

© 2019 Cutting Edge Optronics, Inc. viii Patara End-Pumped Laser Quick Start Guide
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General Safety Summary
The Patara Laser System emits laser radiation that can permanently damage eyes
and skin, ignite fires, and vaporize materials. This preface contains information and
guidance about these hazards. To minimize the risk of injury or expensive repairs,
carefully follow these instructions.
Do not attempt to operate the laser system before carefully reading this complete
operation manual. For any questions on the product that have not been discussed
sufficiently in this manual, contact the manufacturer for complete instructions. Failure to
heed this warning may result in the destruction or serious damage to the device, and will
void the product warranty.
The trouble shooting section is intended to help guide the user to the source of problems.
Do not attempt repairs while the unit is under warranty; instead, report all problems to
Northrop Grumman for warranty repair. We also suggest recording information about the
laser such as power, settings, time and date.
Safety Overview
Safe operation of any laser should be reviewed prior to any new installation of the Patara
laser.
CAUTION. The Patara laser is a Class IV, high power laser whose beam is, by
definition, a safety hazard. Avoid eye or skin exposure to direct or scattered laser
radiation. Avoid direct viewing of the beam or its specular reflection.
Follow the instructions contained in this manual for proper installation and safe
operation of the laser. We recommend the use of protective eyewear at all times (the
type of eyewear depends on the energy and wavelength of the laser beam and
operating conditions). Consult ANSI, ACGIH, or OSHA standards for guidance.
CAUTION. Use of controls, adjustments or performance of procedures other than those
specified herein may result in hazardous radiation exposure.
WARNING. At all times during installation, operation, maintenance, or service of the
laser, avoid exposure to laser or collateral radiation exceeding the accessible emission
limits listed in “Performance Standards for Laser Products,” U.S. Code of Federal
Regulations, 21 CFR 1040 10(d).

© 2019 Cutting Edge Optronics, Inc. ix Patara End-Pumped Laser Quick Start Guide
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Precautions for Safe Operation
Avoid looking directly into the laser beam or at specular reflection, even with
protective eyewear on.
Wear laser safety eyewear that is optically dense at the wavelengths of
operation (798-816 nm pump light, 1064 nm fundamental, 532 nm second
harmonic).
Provide a controlled access area for laser operation and limit access to those
trained in laser safety principles.
Post warning signs in prominent locations near the laser operation area.
Use safety interlocks on all entryways. All Northrop Grumman system control
electronics are supplied with interlock inputs that can be used to preclude
operation with an open safety door.
Enclose beam paths wherever possible.
Set up experiments so the laser beam is below eye level.
Work in an area that is well lighted to avoid dilation of pupils.
Set up a target for the beam.
Set up shields to prevent reflected beams from escaping the laser operation
area.
View an infrared laser beam with a protected image converter at an oblique
angle reflecting from a diffuse surface.
Ensure that all electrical connections are made in a safe manner.
Position equipment so that electrical connections are shielded from accidental
touch.
Do not smoke, eat, or drink in laser areas.
Avoid leaving an operating laser unattended.
Center for Devices and Radiological Health Compliance
This laser product complies with Title 21 of the U.S. Code of Federal Regulations,
Chapter 1, Subchapter J, Part 1040.10 and 1040.11, as applicable. To maintain
compliance with these regulations, once a year or whenever the product has been subject
to adverse environmental conditions (e.g. fire, flood, mechanical shock, spilled solvent),
verify that the radiation controls are functioning properly. All warning labels should
remain fully attached.

© 2019 Cutting Edge Optronics, Inc. x Patara End-Pumped Laser Quick Start Guide
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About This Manual
This manual describes the installation, operation, and service of the Patara End-Pumped
Laser (EPL) System with the eDrive Nitro Laser Controller. The manual consists of the
following chapters:
Chapter 1: Laser System Components provides a description of the system
components and unpacking procedures
Chapter 2: Laser System Setup provides information on quick set-up of the
laser head
Chapter 3: Laser Operation and Tuning provides information on initial
operation and optimizing the laser performance

Table of Contents
© 2019 Cutting Edge Optronics, Inc. xi Patara End-Pumped Laser Quick Start Guide
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Table of Contents
Chapter 1: Introduction 1
Laser System Components 2
Unpacking the Laser System 3
Chapter 2: Laser System Setup 4
Laser Head Setup 5
eDrive Setup 6
Chiller Setup 7
Connecting the Chiller 9
Chapter 3: Laser Operation and Tuning 16
First-time chiller turn-on procedure 17
First time laser turn-on procedure 18
Laser Performance Optimization 21
Check Hold Off 24
Daily Operation 24

List of Figures and Tables
© 2019 Cutting Edge Optronics, Inc. xii Patara End-Pumped Laser Quick Start Guide
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List of Figures and Tables
Figure 1-1. Laser System Components .................................................................................... 2
Figure 2-1. Basic Setup for the Laser Power Test.................................................................... 5
Table 2-1. Recommended Fuse Ratings................................................................................... 6
Figure 2-2. Filter Hoses and Coolant Connections................................................................... 9
Figure 2-3. Chiller Assembled with Coolant Hoses and Filter................................................. 10
Figure 2-4. Connectors on the rear panel of the Patara EPL.................................................. 10
Figure 2-5. Plumbing Connection ........................................................................................... 11
Figure 2-6. Signal Connection ................................................................................................ 11
Figure 2-7. Diode Power Connection...................................................................................... 12
Figure 2-8. Laser Signal Connection ...................................................................................... 12
Figure 2-9. eDrive Rear Panel................................................................................................ 13
Figure 2-10. Chiller Interlock Connector ................................................................................. 13
Figure 2-11. White Interlock Connectors................................................................................. 14
Figure 2-12. RF Cable ............................................................................................................ 14
Figure 2-13. Diode Power Cable............................................................................................. 14
Figure 2-14. RF Signal Cable ................................................................................................. 15
Figure 2-15. BNC Interlock Connection .................................................................................. 15
Figure 3-1. Output Window Cover .......................................................................................... 18
Table 3-1. eDrive Settings....................................................................................................... 19
Figure 3-2. Accessible Holes for HR and OC Mirror Adjustment ............................................ 23

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© 2019 Cutting Edge Optronics, Inc. 1 Patara End-Pumped Laser Quick Start Guide
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Chapter 1: Introduction
This introduction provides the following information:
Laser System Components
Unpacking the Laser System

Chapter One: Introduction
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Laser System Components
Before installing the laser, be familiar with the components of the laser system (see
Figure 1-1).
Laser head
eDrive
Chiller
Laser Signal Cable
Diode Power Cable
Q-Switch RF Cable
AC Power Cables
Hose for Chiller
Filter housing and Filter
Filter Wrench
Figure 1-1. Laser System Components

Chapter One: Introduction
© 2019 Cutting Edge Optronics, Inc. 3 Patara End-Pumped Laser Quick Start Guide
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Unpacking the Laser System
The Northrop Grumman Patara laser has been carefully packed for shipment. If the carton
appears to have been damaged in transit, have the shipper’s agent present when the unit is
unpacked.
Inspect the unit as it is unpacked, looking for dents, scratches, or other evidence of
damage. If damage is discovered, immediately file a claim against the carrier and notify
the Northrop Grumman representative. Northrop Grumman will arrange for repair
without waiting for settlement of the claim.
Keep the shipping container. If filing a damage claim, it may be needed to demonstrate
that the damage occurred as a result of shipping. If returning the unit for service, the
specially designed carton assures adequate protection.
A Patara laser system consists of:
Laser head
eDrive
Laser signal cable
Diode power cable
Hoses and filter for chiller
Filter wrench
Power cord for chiller*
Power cords for eDrive*
Chiller
* United States or European standard as specified in contract
Please check the contents against the packing list and the sales order.

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© 2019 Cutting Edge Optronics, Inc. 4 Patara End-Pumped Laser Quick Start Guide
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Chapter 2: Laser System Setup
Sections included in this chapter provide the following information:
Laser Head Setup
eDrive Setup
Chiller Setup
Connecting the Chiller

Chapter 2: Laser System Setup
© 2019 Cutting Edge Optronics, Inc. 5 Patara End-Pumped Laser Quick Start Guide
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Laser Head Setup
The laser head should be mounted on an optical table or equivalent strong flat surface.
There are three mounting holes provided to secure the laser. The laser should be installed
in a clean environment.
In the direction of the laser output beam, a power meter with the power scale up to 30 W
should be installed approximately 1.5 feet away from the laser. In order to protect the
power meter, a negative lens (f=-100mm) with AR coating at 532 nm should be installed
in front of the power meter as shown in Figure 2-1. If a negative lens is not available, the
power meter should be at least 2 meters away from the laser so that the beam size is
larger and the power density is below the damage threshold of the power meter.
Figure 2-1. Basic Setup for the Laser Power Test

Chapter 2: Laser System Setup
© 2019 Cutting Edge Optronics, Inc. 6 Patara End-Pumped Laser Quick Start Guide
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eDrive Setup
Input Power
Use only power cords suitable for the driver. Use a power source that delivers voltage in
the range of 100 VAC (RMS) to 240 VAC (RMS) and 47 Hz to 63 Hz. Power switching
is performed automatically (i.e., there are no configuration switches to set for high or low
voltage ranging). Table 2-1 provides recommended fuse selection for each voltage range.
Table 2-1. Recommended Fuse Ratings
AC Input
Frequency
Fuse Ratings
(F1, F2)
120 V / 15 A
47-63 Hz
15 A
240 V / 7 A
47-63 Hz
8 A
Mounting
The front panel of the eDrive is designed with four holes to mount into an EIA-310D-
compliant rack. If this option is used, the eDrive’s weight requires extra side supports. If
the eDrive is to be used on a desktop or table top, it is recommended that the eDrive be
equipped with feet to prevent the driver from marring the surface when it is moved. The
eDrive must be secured.
Clearance
Adequate clearance should be allowed on the front, sides, and rear of the eDrive for
access to connections and components. The front and rear vents of the eDrive must be a
minimum of 24 inches (61 cm) away from walls or vertical surfaces so air flow is not
restricted.

Chapter 2: Laser System Setup
© 2019 Cutting Edge Optronics, Inc. 7 Patara End-Pumped Laser Quick Start Guide
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Chiller Setup
Ambient Temperature and Relative Humidity
The chiller is designed for indoor installation in ambient temperatures between 5 °C and
30 °C (41 °F and 86 °F). Relative humidity should not exceed 80% (non-condensing).
Location The chiller should be installed on a strong, level surface and be located as close to
possible to the laser. It should not be installed closer than 4 feet (1.4 meters) to a heat
generating source, such as heating pipes or boilers. If possible, the chiller should be
located near a suitable drain to prevent flooding in the event of leaks. Do not place it
where corrosive fumes, excessive moisture or dust, or high room temperatures are
present.
For ease of positioning and maneuverability, the chiller is supplied with casters. The front
wheels can be locked to keep the chiller in place while in use. To help prevent voltage
drops, position the chiller as close as possible to the power distribution panel. Avoid
voltage drops by using a properly grounded power outlet wired with 14 gauge or larger
diameter wire. The use of an extension cord is not recommended
NOTE: The chiller may be located at a level below that of the equipment being cooled.
As long as the process remains closed, overflow will not occur when adding cooling
fluid to the chiller reservoir.
Oxygen Depletion Risk
In the event of a refrigerant leak, refrigerant gas may displace oxygen that could result in
suffocation and death. Never place the chiller in a room that is smaller than the minimum
room volume requirement as defined below. If the room is ventilated, the air distribution
system must be analyzed to determine the worst case distribution of leaked refrigerant. A
leak detector alarm device is always required in a ventilated room that does not meet the
minimum room volume given below. Assure adequate and sufficient room volume and
ventilation before placing a chiller that contains refrigerant in a room. Contact
Polyscience at 800-229-7569 with any concerns or questions.
Pounds of refrigerant charge can be read directly from the nameplate on the chiller.
Remember to include in the calculation any refrigerant that may be stored in any other
containers.
Minimum Room Volume = Pounds of refrigerant x 110 cubic feet
Example: Two chillers are placed in a room, each containing 6 pounds of refrigerant. The
minimum room volume shall be 12 x 110 cubic feet, or 1320 cubic feet.

Chapter 2: Laser System Setup
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Clearance
Adequate clearance should be allowed on the front, sides, and rear of the chiller for
access to connections and components. The cabinet of the chiller is designed to vent air.
Maintain free space, equal to the height of the chiller, for flow of air on the condenser
side of the chiller (opposite to where the coolant lines connect). The two sides or the top
must have an equal amount of free space. When air flow becomes impeded, cooling
capacity decreases and electrical efficiency drops as motor load increases.
Electrical Power
An IEC power cord is provided with the chiller. It should be attached to the receptacle on
the rear of the enclosure. Make sure that the power outlet used for the Chiller is properly
grounded and matches the voltage and frequency indicated on the identification label on
the back of the chiller.
For 208-230 V/60 Hz Polyscience chillers with less than 1.5 horsepower, the supplied
power cord will be for connection to a NEMA 6-20 (North America) receptacle, in
accordance with local electrical codes. A European cord will be supplied with 50 Hz
models.
The use of an extension cord is not recommended. However, if one is necessary, it must
be properly grounded and capable of handling the total wattage of the unit. The extension
cord must not cause more than a 10% drop in voltage to the Chiller.
CAUTION. The chiller has been set 208-230 Volts at the factory for 60 Hz single
phase or 200 volts for 50 Hz single phase. High voltages out of the specified range
could damage the chiller.
Chiller Cleaning Procedures
Please follow the proper procedures to clean the chiller before it is connected to the laser
head. These procedures are listed on the CD (compact disc) shipped with the unit. They
are also available through Northrop Grumman customer service.
WARNING. DO NOT plug the Chiller into the electrical outlet until the unit is ready for
startup.
WARNING. Make sure that the chiller will not contaminate the laser head.