MAXPhotonics MFPT-20H User manual

Maxphotonics Co.,Ltd.
MFPT-20H/MFPT-20S(V4.2)
MOPA Pulsed Fiber Laser

Copyright Notation
Copyright © Maxphotonics Co., Ltd (hereafter referred to as
Maxphotonics). All rights reserved. You may not copy, modify, transmit or
publish this publication, in any form, in any media or by any means, without
the prior written permission of Maxphotonics, except as allowed under
applicable copyright laws. Permitted copies shall bear the same copyright
and proprietary notices that were contained on the original version.
Maxphotonics believes that the information provided is accurate and
reliable; however Maxphotonics makes no warranty, representation,
expression or implication that this document can be used as reference
in other occasions. Furthermore, Maxphotonics does not assume
responsibility for any infringement of patents or other rights of third parties
due to use of the information contained in this document. Maxphotonics
shall not be liable for errors contained in this document or for direct or
indirect damages of relevant equipment.
Maxphotonics and the Maxphotonics Logo are registered trademarks of
Maxphotonics Co., Ltd., and the Logo does not break any regulations
of Trademark law.Maxphotonics grants no rights for patent or other
intellectual property mentioned herein.
All information contained in this document is subject to change and
revision without notice.
Subject to change without notice.
Maxphotonics Co.,Ltd.
Address: Maxphotonics Industrial Park, 3rd Furong Road,
Furong Industrial Area, Shajing, Baoan, Shenzhen, China.518125
E-Mail: [email protected]
http://en.maxphotonics.com

1
Preface
Thank you for using the MFPT-20H/MFPT-20S Series MOPA Pulsed
Fiber Laser. We compile this document for you in order that the laser
is used and maintained properly. Due to the limited level of the writers,
coupled with time constraints, there may be some careless mistakes in this
document, and your understanding will be much appreciated. Thank you
again for using Maxphotonics' products.
Please take time to read and understand this User's Guide and familiarize
yourself with the operating and maintenance instructions before you use
the product. We strongly recommend that the operator read the Section
titled “Safety Information” prior to operating the product.
This User's Guide should stay with the product to provide you and all future
users and owners of the product with important operating, safety and other
information.
We identify the parts to which you need to pay special attention in the
document with underscore. Please notice those information to avoid the
unnecessary damages.

2
Company Profile
As a large laser manufacturer founded in 2004, Maxphotonics Co., Ltd.
specializes in research and development, production and sales of lasers
and ancillary products. Maxphotonics owns a number of independent
intellectual property rights and patents as well as high-power pulsed fiber
laser, high-power fiber laser and high-power fiber amplifier etc.
So far, with intellectual property rights and patents, Maxphotonics owns
industrial pulsed fiber laser series, CW fiber laser series,QCW laser
series,fiber laser for scientific researches, tunable fiber laser, fiber
amplifier, ASE light source, etc. Those products are widely applied to fields
of laser marking, 3D print，DTS system and scientific research.
Maxphotonics offers laser, relevant solution and ancillary facility to
domestic and foreign customers. We adhere to the enterprise mission
statement of ''Maxphotonics leads the industry'', take customer satisfaction
as the start point, completely implement ISO9001 quality management
system, introduce ERP information management system and provide all-
round pre-sales and after-sales service for customers.
Relying on excellent ability of product design and development, we carry
out all-round exchanges and cooperation with international famous
laser companies and various research institutions of China, continuously
increase the investment of science research, constantly update
diversification of production types, lead the trend of the industry and create
maximum value for customers, so as to strive perseveringly for the world-
class laser manufactures and forge ahead.
More informations，please visit our website：
http://en.maxphotonics.com

3
CONTENT
Chapter 1 Characteristic Description ………………………………… 5
Chapter 2 General Safety Information ……………………………… 6
1-Safety Conventions ………………………………………………………… 6
2-Laser Protection …………………………………………………………… 7
3- General Safety Instructions ……………………………………………… 8
4-Additional Safety Information …………………………………………… 12
Chapter 3 Product Description ………………………………………… 13
1-Property Introductions …………………………………………………… 13
2-Laser Model Designation Codes ……………………………………… 14
3-Certification ………………………………………………………………… 14
Chapter 4 Specification …………………………………………………… 15
1-Optical Characteristic Parameters ……………………………………… 15
2-General Characteristic Parameters …………………………………… 16
3-Structural Layout …………………………………………………………… 17
Chapter 5 Operation Guide ……………………………………………… 18
1-Electrical Power Connection …………………………………………… 18
2-Control Connector Pin Assignment, DB-25 plug …………………… 20

4CONTENT
3-Laser Operation using Digital Interface ……………………………… 26
4-Cut-off Power Frequency ……………………………………………… 29
5-Pulse Adjustment …………………………………………………………… 31
Chapter 6 Common Fault Treatment ………………………………… 32
1-Laser Emission Failure …………………………………………………… 32
2-Power Drops ………………………………………………………………… 32
Chapter 7 Service and Maintenance ………………………………… 34
1-Maintenance Notes ………………………………………………………… 34
2-Service Statement ………………………………………………………… 35
Chapter 8 Warranty Statements………………………………………… 36
1-General Clause ……………………………………………………………… 36
2-Warranty Limitations ……………………………………………………… 36

5
The MFPT-20H/MFPT-20S (MOPA Pulsed Fiber Lasers) Series products
are characterized by high reliabilty and high performance with the central
emission wavelength of 1060nm. They are high-effecient, air-cooled
and maintenance-free, which make them ideal tools for industrial laser
marking, engraving etc..
Maxphotonics' MFPT-20H/MFPT-20S (MOPA Pulsed Fiber Lasers)
Series are Class 4 laser products and are designed and tested with safety.
By following this User Guide and applying sound laser safety practices, it
will be a safe and reliable device.
Laser light exhibits unique characteristics that may pose safety hazards.
Therefore, the laser light can't be treated as normal light sources, and
all operators and people near the laser must be aware of these special
hazards.
In order to ensure the safe operation and optimal performance of the
product, please follow all warnings and safety instructions in this guide
during process of operation, maintenance and service.
For ensuring the safety of operators, operators are urged not to open
the equipment privately at all times. There are no user serviceable
parts, equipment or assemblies associated with this product. Lasers of
unauthorized disassembly shall not be subject to warranty
Chapter 1
Characteristic Description

6
Chapter 2
General Safety Information
1-Safety Conventions
All safety warning symbols during operating process of the laser include:
SYMBOLS DESCRIPTION
WARNING :
Refer to a potential Electrical Hazard to human
body;
It requires certain procedures; otherwise, it may
result in bodily harm to you and/or others. In
order to ensure the personal safety of operators,
do not violate the requirement of the WARNING
sign.
CAUTION :
Refers to a potential hazard on product. It
requires certain procedure that, if not correctly
followed, may result in damage to the product or
components. In order to ensure normal use of
equipment, do not violate the requirement of the
CAUTION sign.
WARNING :
Refers to a potential Laser Hazard.
The symbol represents laser radiation. The
symbol is pasted on laser output end.
NO SYMBOL
IMPORTANT :
Refers to any information regarding the operation
of the product. Please do not overlook this
information.

7
Chapter 2 General Safety Information
NOTE :
◎ This device is classified as a high power Class IV laser instrument which
emits light with the wavelength of 1060nm and the optical output power
is up to 20W. This level of light may cause damage to the eye and skin.
Despite the radiation being invisible, the beam may cause irreversible
damage to the retina. Laser safety eyewear is not provided with this
instrument, but must be worn at all times while the laser is operational.
Use appropriate laser safety eyewear when operating this device. The
manufacturer of the laser system is responsible for the safety compliance
according to the applicable standards and regulations.
2-Laser Protection
1.Laser Protection Requirements
You must wear the safety protective glasses while operating the laser,
and rationally select the safety protective glasses according to the lasing
wavelength of the laser. If the device is a tunable laser or Raman product,
it emits light over a range of wavelengths and the end user should confirm
the laser safety eyewear used protects against light emitted by the device
over its entire range of wavelength.
2.Laser Protective Equipment Suppliers
Maxphotonics recommends material or equipments provided by following
laser protective equipment suppliers for you, including LaserVision USA,
Kentek Corporation, Rochwell Laser Industries, etc. All the supplier
information is provided by Maxphotonics only for the convenience to use,
so Maxphotonics assumes no responsibility for any problem caused by
using the products of abovementioned suppliers.

8Chapter 2 General Safety Information
3-General Safety Instructions
In order to ensure the safe operation and optimal performance of the
product, please follow these warnings and cautions in addition to the other
information contained elsewhere in this document.
1.Specular Reflection
There are often numerous secondary laser beams produced at various
angles in the output port of the laser. These divergent beams are produced
when the primary beam of laser reflects off a smooth surface, and they are
called specular reflections. Although these secondary beams may be less
powerful than the total power emitted from the primary beam, the intensity
may be great enough to cause damage to the eyes and skin as well as
surface of materials.
WARNING:
◎ You must exercise caution to avoid/minimize specular reflections as
these laser radiations are invisible!
2.Safety Instructions of Accessories
WARNING:
◎ This device has an output optical head connected to the laser with a
fiber cable. Please be careful dealing with the output head.
3.Optical Operating Instructions
We strongly recommend that you read the following procedures before
operating the laser:
（1）Never look directly into the laser output port when the power is turned on.
（2）Avoid positioning the laser and all optical output components at eye
level.
（3）Ensure that all personal protective equipment is suitable for the
output power and wavelength range of the laser.

9
Chapter 2 General Safety Information
（4）Do not install or detach cutting heads or collimators when laser is
active.
（5）It is forbidden to turn on the laser during the mounting of fiber or
cutting head. Carry out commissioning, calibration and focusing at low
output power and then increase the output power gradually when the
calibrating and focusing work is done.
（6）Marking on highly reflective materials is feasible, but you must make
the laser out of focus, or else you may damage the laser.
（7）For collimated outputs, maintaining a clean output lens is essential.
Always close (re-cap) the collimator after use. Do not touch the output
lens and do not clean it with any solvents.Cleaning with the special solvent
and cleaning buds is allowed as described later on in th is manual.
WARNING ：
◎ Make sure that the individual protective equipment meets the output
power and wavelength range of the laser.
◎ Never look directly into the optical fiber or the collimator, and use
appropriate laser safety eyewear when operating this device.
◎ Optical damage may result from failure to comply with the above
instructions. Such damage is not covered by the warranty.
WARNING :
◎ Use of controls or adjustments or performance of procedures other than
those set forth in this User's Guide and related documents may result in
hazardous radiation exposure.
4.Electrical Operating Instructions
MFPT-20H/MFPT-20S Laser module supply voltage:24VDC。

10 Chapter 2 General Safety Information
WARNING ：
◎ Make sure the shell of this equipment is properly grounded. Any
interruption of the ground loop may result in personal injury.
◎ Make sure that the input DC voltage of the laser is the voltage of the
normal DC mains, and wires are connected accurately. Any incorrect
wiring method may cause damage to people or instrument.
◎ Before supplying the power to the device, make sure that the correct
voltage of the DC power source is used. Failure to use the correct voltage
could cause damage to the device.
◎ No operator serviceable parts inside. Refer all servicing to qualified
Maxphotonics personnel.
◎ To prevent short circuit, do not remove shell, detach the laser without
permission and damage the relevant signs. Any product with unauthorized
dismounting shall not be subject to warranty.
5.Environment Conditions and Precautions
We strongly recommend that you read the following procedures before
operating the laser :
（1）Do not expose the laser to a high moisture/high temperature
environment. Install the laser in the cabinet with the function of
temperature-humidity control and dust-free
（2）Laser Module has at least three fans at the rear panel for active
cooling. Make sure that there is at least 5cm between fan protector and
external objects, and with sufficient airflow to cool the device.
Cable Colour Supply
BROWN +24VDC
BLUE GND
YELLOW-GREEN SHELL

11
Chapter 2 General Safety Information
（3）Before switching on the device make sure that environmental
temperature and humidity are within a specified range.
WARNING :
◎ Optical damage may result from failure to comply with the above
instructions. Such damage is not covered by the warranty.
6.Routine Maintenance
（1）Avoid the impaction on the shipper rod of worktable when the laser is
working.
（2）The laser and optical lens are fragile, please handle with care.
（3）Stop running once device failure, and provide professional treatment.
（4）Please follow a set sequence of on-off.
（5）The limitation on surface of marking machine is within the working
area.
（6）Keep the device clean and indoor.
7.Safety Labels and Labeling Locations
The following shows the pictures of tags and their positions on the
product :
Pictures of label Label name Label location
Light Emission Top Cover
CAUTION Top Cover

12 Chapter 2 General Safety Information
4-Additional Safety Information
For additional information regarding Laser Safety, please refer to the
list below :
Laser Institute of America(LIA)
13501 Ingenuity Drive, Suite 128
Orlando,Florida 32826
Phone:[phone],Fax: [phone]
Toll Free:1 800 34 LASER
American National Standards Institute
ANSI Z136.1, American National Standard for the Safe Use of Lasers
(Available through LIA)
International Electro-technical Commission
IEC 60825-1,Edition 1.2
Center for Devices and Radiological Health
21 CFR 1040.10 - Performance Standards for Light-Emitting Products
US Department of Labor - OSHA
Publication 8-1.7 - Guidelines for Laser Safety and Hazard Assessment.
Laser Safety Equipment
Laurin Publishing
Laser safety equipment and Buyer's Guides

13
1-Property Introductions
The MFPT (MOPFA Pulsed Fiber Lasers) Series products adopt
Q-Switched main oscillator, MFPM structure with a compact and rugged
package. It's easy to operate and maintenance-free,and can be directly
integrated into the laser equipment. The emission wavelength is around
1060nm and the peak power is up to 10KW.The operating parameters of
the fiber laser are entered through 25pin control interface.After matching
customer's special controller, it can be used as handheld laser.
Features:
（1）Short optical pulses, high peak power, a wide range of PRR.
（2）Superior reliability, long service life
（3）No shadow or virtual open circuit phenomenon when processing on
special mateirals
（4）Universal DB 25 Pin Interface
Application:
（1）Industrial applications
（2）Scientific research
Chapter 3
Product Description

14 Chapter 3 Product Description
3-Certification
Maxphotonics guarantee that this equipment has been thoroughly tested
and inspected and meets published specifications prior to shipping. Upon
receiving your equipment, check whether the packaging and accessories
have been damaged in transit. If damage is apparent, please contact
Maxphotonics immediately.。
2-Laser Model Designation Codes
Model Model Coding Rules
MFPT-20H/MFPT-20S Maxphotonics 20W High / Super Performance
MOPA Pulsed Fiber Laser

15
Chapter 4
Specification
1-Optical Characteristic Parameters
Characteristics Test conditions Min. Nom. Max. Unit
Mode Pulse
Polarization Random
Beam Quality M²Pout=Pnom 1.2 1.45
Center Wavelength Pout=Pnom 1060 1064 1070 nm
Spectrum Width(3dB) Pout=Pnom 815 nm
Average Optical
Power(Pnom)
19.5 20 20.5 W
Power Range 10 100 %
Max. Pulse Energy 350ns/33KHz 0.61 mJ
Pulse Width Range 2350 ns
Optical Pulse
Width(FWHM)
350ns/33KHz 85 ns
Pulse Repetition
Frequency (PRF.)
For Pulse Width
2-40ns 11000 (20H) KHz
For Pulse Width
2-40ns 12000 (20S) KHz
For Pulse Width
50-80ns 11000 KHz
For Pulse Width
100-200ns
1400 KHz
For Pulse Width
250-350ns
1200 KHz
PRF. Range Under
Full Power
33 1000
(20H) KHz
33 2000
(20S) KHz

16 Chapter 4 Specication
2-General Characteristic Parameters
◎ Note: Beam Diameter and Delivery Cable Length can be customized
against User's specific demand.
Output Power Stability Pout=Pnom 5 %
Beam Diameter 1/e2 679mm
Beam Ellipticity 90 %
Delivery Cable Length 1.9 2.5 3 M
Laser startup Time Pout=Pnom，
10%~90% 300 us
Laser Shutdown Time Pout=Pnom，
90%~10% 200 us
No. Characteristics Test conditions Min. Nom. Max. Unit
1
Operating
Environment
Tem.
040 ℃
2Storage Tem. -10 60 ℃
3Cooling
Method Air-cooling
4Warm Up Time Operate 1min
Stable 10
5
Operating
Environment
humidity
10 95 %
6Dimensions 264*120*348 mm
7Weight 11 kg
8Power Supply 23 24 25 VDC
9Power
Consumption
Pout=Pnom，
T=20℃ 90 120 W

17
Chapter 4 Specication
3 -Structural Layout
Standard isolated output head dimensions:（Unit：mm）
Laser module dimensions:（Unit：mm）

18
Chapter 5
Operation Guide
Packing List :
Contents Quantity
User Guide+ Qualified Test Result 1
Power Wire (Optional) 1
CAUTION :
◎ If any damage of the external package and internal parts has been
found upon receipt of product, please contact Maxphotonics Co., Ltd. or
designated agent immediately.
1-Electrical Power Connection
Power wire