Halma Ocean Optics LASER-785-IP-LAB User manual

Multimode Spectrum Stabilized Laser Module
Series −Lab Versions
Installation and Operation Manual
Document Number LASER-785-LAB-02-0409
Office: Ocean Optics, Inc. World Headquarters
830 Douglas Ave., Dunedin, FL, USA 34698
Phone [phone]
Fax [phone]
8 a.m.– 8 p.m. (Mon-Thu), 8 a.m.– 6 p.m. (Fri) EST
E-mail: [email protected] (General sales inquiries)
[email protected] (Questions about orders)
[email protected] (Technical support)
WARNING
Protective Eye Wear Should Be Worn
When Using This Instrument - Intense
Radiation Present
See Important Safety Notices inside.

Additional
Offices: Ocean Optics Asia
666 Gubei Road, Kirin Tower, Suite 601B, Changning District,
Shanghai, PRC. 200336
Phone [phone]
Fax [phone]
E-Mail [email protected]
Ocean Optics Europe
Sales and Support Center
Geograaf 24, 6921 EW DUIVEN, The Netherlands
Phone [phone]
Fax [phone]
E-Mail [email protected]
Regional Headquarters
Maybachstrasse 11
73760 Ostfildern
Phone [phone]
Fax [phone]
E-Mail [email protected]
Copyright © 2009 Ocean Optics, Inc.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, by any means, electronic,
mechanical, photocopying, recording, or otherwise, without written permission from Ocean Optics, Inc.
This manual is sold as part of an order and subject to the condition that it shall not, by way of trade or otherwise, be lent, re-sold, hired out or
otherwise circulated without the prior consent of Ocean Optics, Inc. in any form of binding or cover other than that in which it is published.
Trademarks
Microsoft, Windows, Windows 95, Windows 98, Windows Me, Windows NT, Windows 2000, Windows XP and Excel are either registered
trademarks or trademarks of Microsoft Corporation.
Limit of Liability
Every effort has been made to make this manual as complete and as accurate as possible, but no warranty or fitness is implied. The information
provided is on an “as is” basis. Ocean Optics, Inc. shall have neither liability nor responsibility to any person or entity with respect to any loss or
damages arising from the information contained in this manual.

Important Safety Notices
The Class IIIB laser described here produces a laser emission of 785 nm with output power levels
exceeding 350 mW. All models except the –S are designed to be used in a fiber-coupled configuration (-S
is designed for SMA coupling); any other configuration may expose the user to hazardous radiation.
This laser is safe to operate, provided the user pays attention to all safety warnings:
1. Post warnings in the area of the laser beam to alert those present.
2. Keep all unauthorized personnel out of the area where the laser is operated to avoid potentially
hazardous exposure to eyes and skin.
3. Whenever the laser is running and the beam is not in use, it is good operating practice to
mechanically block the path.
4. Never look directly into the laser source or scattering laser light from any reflective surface.
Never sight down the beam into the source.
5. Maintain experimental setup at low heights to prevent inadvertent beam-eye contact.
6. As a precaution against accidental exposures to the output beam or its reflection, operators should
wear laser safety glasses attenuated to the wavelength being generated.
LASER-785-LAB-02-0409 A

Important Safety Notices
Sources for additional information and assistance on laser safety are the following:
Center for Device and Radiological Health
Office of Compliance
2098 Gaither Rd.
Rockville, MD 20850
Tel: [phone]
Fax: [phone]
Laser Institute of America
12424 Research Parkway, Suite 125
Orlando, FL 32826
Tel: [phone]
Fax: [phone]
B LASER-785-LAB-02-0409

Table of Contents
About This Manual .......................................................................................................... iii
Document Purpose and Intended Audience.............................................................................. iii
Document Summary.................................................................................................................. iii
Product-Related Documentation ............................................................................................... iii
Upgrades......................................................................................................................... iii
Chapter 1: Introduction ......................................................................1
Overview ......................................................................................................................... 1
Lab Version Models......................................................................................................... 2
Features .......................................................................................................................... 2
Package Contents ........................................................................................................... 3
Additional Equipment Required....................................................................................... 3
Chapter 2: Set-up and Operation.......................................................5
Overview ......................................................................................................................... 5
Set-up.............................................................................................................................. 5
Set-up for Operation in Internal Power Preset Mode ................................................................ 6
Set-up for Operation to Control Power Through the Front Panel.............................................. 7
Set-up for Operation in External Power Control Mode.............................................................. 8
Operation......................................................................................................................... 8
Operation in Internal Power Preset Mode ................................................................................. 8
Operation Controlling Power Through the Front Panel ............................................................. 9
Operation in External Power Control Mode............................................................................... 10
Using the Remote Interlock Feature................................................................................ 10
Shutting Down the Laser ................................................................................................. 11
Index.....................................................................................................13
LASER-785-LAB-02-0409 i

Table of Contents
ii LASER-785-LAB-02-0409

About This Manual
Document Purpose and Intended Audience
This document provides you with information to get your laser set up and operating.
Document Summary
Chapter Description
Chapter 1: Introduction Contains a list of product features and package
contents.
Chapter 2: Set-up and Operation Provides instructions for setting up and operating the
laser.
Product-Related Documentation
•Multimode Spectrum Stabilized Laser Subsystem Installation and Operation Manual
You can access documentation for Ocean Optics products by visiting our website at
http://www.oceanoptics.com. Select Technical →Operating Instructions, then choose the appropriate
document from the available drop-down lists. Or, use the Search by Model Number field at the bottom
of the web page.
You can also access operating instructions for Ocean Optics products on the Software and Technical
Resources CD included with the system.
Engineering-level documentation is located on our website at Technical →Engineering Docs.
Upgrades
Occasionally, you may find that you need Ocean Optics to make a change or an upgrade to your system.
To facilitate these changes, you must first contact Customer Support and obtain a Return Merchandise
Authorization (RMA) number. Please contact Ocean Optics for specific instructions when returning a
product.
LASER-785-LAB-02-0409 iii

About This Manual
iv LASER-785-LAB-02-0409

Chapter 1
Introduction
Overview
The Multimode Spectrum Stabilized Laser Subsystem Series – Lab Versions consists of three models of
continuous wave lasers designed specifically for Raman spectroscopy (see Lab Version Models). These
laser models feature an internal 350 mW spectrum stabilized laser module that contains an integral
Thermo-Electric Cooler (TEC) and thermistor for monitoring the internal temperature of the laser
platform. The laser has narrow spectral lines, is compact and features a hermetically sealed laser
component, making it optimal for industrial and medical applications.
The unit comes complete with a laser-enable switch for safety, a safety key lockout, and an emergency
shut-off switch.
Multimode Spectrum Stabilized Laser Subsystem
LASER-785-LAB-02-0409 1

1: Introduction
Spectral Output Captured with HR4000 Spectrometer
Lab Version Models
This document covers the installation and operation of the following laser models:
•LASER-785-IP-LAB −785 nm spectrum stabilized multi-mode laser with > 350mW of fiber-
coupled output power
•LASER-785-LAB-ADJ −785 nm spectrum stabilized multi-mode laser with > 350mW of fiber-
coupled, adjustable output power. Also features an LED display and an output power control dial.
•LASER-785-IP-ADJ-S −785 nm spectrum stabilized multi-mode laser with > 350mW of SMA-
coupled, adjustable output power. Also features an LED display and an output power control dial.
In addition, the LASER-785-IP-OEM laser is available. This is a single-mode laser with >350mW of
fiber-coupled output power. This version is documented in the Multimode Spectrum Stabilized Laser
Subsystem Installation and Operation Manual. See Product-Related Documentation for more
information.
Features
The laser provides the following features:
•>350 mW Fiber Coupled or SMA-coupled (-S model) Output Power
•Narrow Spectral Line width of only 0.2 nm
•Thermo-Electric Cooler (TEC)
•Low Power consumption (< 5.5 W)
2LASER-785-LAB-02-0409

1: Introduction
•Remote Interlock, Safety Key Lock-out and Emergency shut-off
•LED display for output power setting (Models LASER-785-LAB-ADJ and LASER-785-LAB-
ADJ-S only)
•Output power control dial (Models LASER-785-LAB-ADJ and LASER-785-LAB-ADJ-S only)
Package Contents
One (1) Ocean Optics Multimode Stabilized Laser
One (1) Thermistor
One (1) power cord
Two (2) Master Power keys
One (1) remote plug
Additional Equipment Required
The following equipment, available from Ocean Optics, is also required to use your laser:
Safety goggles (R-2001-GL goggles from Ocean Optics are recommended)
LASER-785-LAB-02-0409 3

1: Introduction
4LASER-785-LAB-02-0409

Chapter 2
Set-up and Operation
Overview
This section provides instructions for setting up and operating the laser. Read all instructions and
warnings carefully before attempting to install and operate your laser.
Set-up
The laser set-up procedure differs, depending on whether you are going to control the output power
automatically via the Internal Preset mode (Model LASER-785-IP-LAB), manually through the unit’s
front panel (Models LASER-785-LAB-ADJ and LASER-785-LAB-ADJ-S), or remotely (all models).
Laser Rear Panel View
LASER-785-LAB-02-0409 5

2: Set-up and Operation
Set-up for Operation in Internal Power Preset Mode
Use these set-up instructions for the Internal Power Preset mode (Model LASER-785-IP-LAB).
►Procedure
1. Make sure that the master Power key is in the vertical (“Off’) position.
2. Connect the 120V AC power plug to the power connector on the rear of the unit.
3. Plug the other end of the power cord into a standard 110/120V electrical outlet.
4. Connect a FC/PC Multi-mode fiber patch cord to the FC/PC bulkhead connector on the front
panel of the unit.
5. Note that this laser is configured with a remote interlock on the rear panel. The laser has an RJ-11
(4-pin telephone jack) that is prewired to provide a closed loop connection for the interlock.
Removal of the RJ-11 connector or a break in the closed loop circuit provided will result in a
laser interrupt and the system will be reset to standby mode. You can reconfigure the RJ-11
connector to provide a closed loop that interactively couples with their system or facility by
replacing the short length of wire with longer closed loop connections, if desired.
6. Ensure that the Emergency Shut-off switch (EMO) is in the “ready” position by turning the red
button clockwise until it pops out slightly.
7. You are now ready to turn on the laser module. Go to Operation in Internal Power Preset Mode.
6LASER-785-LAB-02-0409

2: Set-up and Operation
Set-up for Operation to Control Power Through the Front
Panel
Use these set-up instructions when you want to control the laser power through the unit’s front panel
(Models LASER-785-LAB-ADJ and LASER-785-LAB-ADJ-S).
►Procedure
1. Make sure that the master Power key is in the vertical (“Off’) position.
2. Connect the 120V AC power plug to the power connector on the rear of the unit.
3. Plug the other end of the power cord into a standard 110/120V electrical outlet.
4. Connect an SMA 905 connectorized multi-mode fiber patch cord to the SMA bulkhead connector
on the front panel of the unit.
5. Note that this laser is configured with a remote interlock on the rear panel. The laser has an RJ-11
(4-pin telephone jack) that is prewired to provide a closed loop connection for the interlock.
Removal of the RJ-11 connector or a break in the closed loop circuit provided will result in a
laser interrupt and the system will be reset to Standby mode. You can reconfigure the RJ-11
connector to provide a closed loop that interactively couples with their system or facility by
replacing the short length of wire with longer closed loop connections, if desired.
6. Ensure that the Emergency Shut-off switch (EMO) is in the “ready” position by turning the red
button clockwise until it pops out slightly.
7. You are now ready to turn on the laser module. Go to Operation Controlling Power Through the
Front Panel.
LASER-785-LAB-02-0409 7

2: Set-up and Operation
Set-up for Operation in External Power Control Mode
The Model LASER-785-IP-LAB laser is designed for operation in the Internal Power Preset mode and the
Models LASER-785-LAB-ADJ and LASER-785-LAB-ADJ-S are designed for operation through their
front panel controls. However, the laser provides you with the capability (via an external port on the back
panel) of adjusting the power remotely via computer or signal generator in External Power Control mode.
Use these set-up instructions for the External Power Control mode. See for Operation in External Power
Control Mode operation instructions in this mode.
►Procedure
1. Make sure that the laser power is not operating by pressing the Laser On switch and assuring that
the Laser On LED on the front panel is not lit.
2. Set the Mode Selection switch on the rear panel to External (the amber Operating Mode LED
will light).
3. Connect a BNC cable to the Control port on the rear panel.
4. Go to Operation in External Power Control Mode to operate the laser in External Power Control
mode.
Operation
Read the following warning before attempting to use the laser:
WARNINGS
DO NOT LOOK DIRECTLY INTO THE LASER. LASER RADIATION IS
HAZARDOUS TO THE EYES.
AVOID DIRECT EXPOSURE TO THE BEAM.
Operation in Internal Power Preset Mode
Use this procedure to operate the Model LASER-785-IP-LAB laser in the Internal Power Preset mode.
►Procedure
1. Turn the master Power key (on the rear panel) 90 degrees clockwise to the horizontal “ON”
position. The green System Power LED (on the front panel) lights indicating that system power
is on.
8LASER-785-LAB-02-0409

2: Set-up and Operation
2. Push the Laser On switch (on the front panel). The red LED on the front panel lights to indicate
that the laser is in operation. The laser turns on approximately 2 seconds after the switch is
pressed.
Note
Note that the switch returns to the center position after you press it. At this point, it can
function as a manual reset.
3. In the event of a power interruption, power failure or interlock break, the laser is automatically
disabled. To re-enable it, toggle the Laser On switch to back to the ON position.
Operation Controlling Power Through the Front Panel
Use this procedure to control the laser power through the unit’s front panel (Models LASER-785-LAB-
ADJ and LASER-785-LAB-ADJ-S).
►Procedure
1. Turn the master Power key (on the rear panel) 90 degrees clockwise to the horizontal “ON”
position. The green System Power LED (on the front panel) lights indicating that system power is
on.
2. Turn the laser adjustment dial on the front panel to the desired drive current setting. The setting is
displayed on the front panel LED.
3. Push the Laser On switch (on the front panel). The red LED on the front panel lights to indicate
that the laser is in operation. The laser turns on approximately 2 seconds after the switch is
pressed.
LASER-785-LAB-02-0409 9

2: Set-up and Operation
Note
Note that the switch returns to the center position after you press it. At this point, it can
function as a manual reset.
4. In the event of a power interruption, power failure or interlock break, the laser is automatically
disabled. To re-enable it, toggle the Laser On switch to back to the ON position.
Operation in External Power Control Mode
The Multimode Spectrum Stabilized Laser provides the capability of adjusting the power remotely via
computer or signal generator in External Power Control mode. Use the following procedure:
►Procedure
1. Make sure that a BNC cable is connected to the Control port on the rear panel as described in Set-
up for Operation in External Power Control Mode.
2. Apply a DC bias between 0 (zero power) and 1 (full power) Volt to modulate the laser or to
adjust the laser’s output power. The unit can be modulated at rates up to approximately 300 KHz.
3. Push the Laser On switch (on the front panel). The laser then outputs a variable amount if output
power dependent on the DC bias voltage that has been applied to the Control port on the rear
panel.
Using the Remote Interlock Feature
The Remote Interlock is a safety feature that automatically shuts down the laser when a trigger such as a
door or an enclosure opening occurs. You may decide to enable a remote interlock mechanism when
integrating the laser into a laboratory or system environment.
The interlock is located on the rear panel and uses an RJ-11 plug. The Remote Interlock is normally an
open circuit, so the provided RJ-11 connector or a user-configured closed loop interconnect MUST be in
place for proper function of the laser module. To enable the Remote Interlock, you must obtain an RJ-11
plug (or modify the plug provided) and create a closed circuit between the two signal terminals of the
plug and insert the closed-circuit RJ-11 plug into the Interlock jack.
The laser functions normally when is senses a closed circuit, but it will disable laser output when it
detects an open circuit. To re-enable the laser function, you must make sure that the interlock is a closed
circuit, and then manually reset the laser by toggling the Laser On switch on the front panel to the ON
position.
10 LASER-785-LAB-02-0409

2: Set-up and Operation
Shutting Down the Laser
Use the following procedure when you are finished using the laser and need to shut it down.
►Procedure
1. Push the Laser On toggle switch (on the front panel) to turn the laser off. Make sure that the
Laser On LED goes off.
2. Turn the master Power key (on the rear panel) 90 degrees to the vertical “off” position. The green
System Power LED (on the front panel) goes off indicating that system power is off.
3. Disconnect the fiber or SMA cords and power cable as needed.
LASER-785-LAB-02-0409 11

2: Set-up and Operation
12 LASER-785-LAB-02-0409