THORLABS BP209-VIS User manual

Thorlabs Beam
Beam Analyzing Software
2022
BP209-VIS(/M), BP209IR1(/M),
and BP209-IR2(/M)
with M2MS(-AL)
Operating Manual

Copyright © 2022 Thorlabs
Version:
Date: 8.1 14-Feb-2022

Foreword
Contents 5
1 General Information 6
61.1 Ordering Codes and Accessories 71.2 Requirements
2 Getting Started 8
82.1 Parts List BP209-VIS(/M), BP209IR1(/M) and BP209-IR2(/M) 82.2 Parts List M2MS with BP209 Series
3 Operating Elements 10
103.1 BP209 Series 113.1.1 Rotation Mount 123.2 Mounting BP209 Series
4 Installation 13
134.1 Software Installation 134.2 Connection to the PC 144.3 Start the Application
5 Operating Principle 15
6 The Graphics User Interface (GUI) 16
176.1 Menu Bar 176.1.1 File Menu 186.1.2 Control Menu 196.1.3 Options Menu 226.1.4 Windows Menu 226.1.5 View Menu 236.1.6 Help Menu 246.2 Tool Bar 256.3 Status Bar 256.4 Save Settings 266.5 Beam Settings 276.5.1 Optical Setup 276.5.1.1 Wavelength 286.5.1.2 Power Correction 296.5.2 Beam Profiler Information 306.5.3 Slit Beam Profiler Parameter 316.5.3.1 Gain, Bandwidth and Baseline 316.5.3.2 Scan Rate 326.5.3.3 Miscellaneous 326.5.4 Calculation Parameter 336.5.4.1 Calculation Area

346.5.4.2 Averaging Mode 356.5.4.3 Clip Level 356.5.4.4 Hold Maximum 356.5.4.5 Autoscale to Peak 356.5.4.6 Correct Beam Width 356.5.4.7 Reference Position 366.5.4.8 Unit 366.5.5 Plot Over Time Parameter 376.5.6 Translation Stage Control 396.6 Child Windows 406.6.1 2D Reconstruction 426.6.2 3D Profile 436.6.3 X and Y Profiles 446.6.4 Zooming and Panning Diagrams 456.6.5 Calculation Results 496.6.6 Manual Vergence Measurement 516.6.7 Tuning View 536.6.8 Beam Overlapping 556.6.9 Plots 566.6.9.1 Plot Positions 576.6.9.2 Plot Power 586.6.9.3 Plot Diameters 586.6.9.4 Plot Gaussian Fit 606.6.9.5 Plot Environment Data 616.6.9.6 Beam Stability
7 Operation Instructions 63
637.1 Measurement with the Beam Profiler 637.1.1 Operating the Instrument 657.1.2 Pass/Fail Test 667.1.3 Save Measurement Results 677.1.3.1 Export Device Data 697.1.3.2 Print Windows 707.1.3.3 Save Test Protocol 727.1.4 Pulsed Laser Sources 747.1.5 Knife Edge Mode 777.2 Beam Quality (M²) Measurement 777.2.1 General 797.2.2 M2MS Operating Principle 807.2.3 Beam Diameter Requirements 817.2.4 M² Meter Extension Set 827.2.5 M² Meter Set with BP209 Slit Beam Profiler 837.2.6 Setup M2MS

857.2.6.1 Mounting the Beam Profiler 867.2.6.2 Connecting M2MS to the PC 877.2.7 M² Measurement 887.2.7.1 Beam Alignment 977.2.7.2 M² Measurement Panel 997.2.7.3 M² Settings 1017.2.7.4 Saving the M² Measurement Results 1057.2.7.5 Running the M² Measurement 1067.2.7.6 M² Measurement Results 1117.2.7.7 M² Troubleshooting 1147.2.7.8 Live Adjustment 1157.2.8 Divergence Measurement 1157.2.8.1 Beam Alignment 1237.2.8.2 Divergence Measurement Panel 1257.2.8.3 Divergence Measurement Settings 1267.2.8.4 Saving the Divergence Measurement Results 1267.2.8.5 Running the Divergence Measurement 1277.2.8.6 Divergence Measurement Results 1297.2.8.7 Live Adjustment 1307.2.9 M² Theory
8 Write Your Own Application 133
1348.1 32 bit Operating System 1368.2 64 bit Operating System
9 Maintenance and Repair 138
1389.1 Version and Other Information 1389.2 Cleaning 1399.3 Troubleshooting 1409.3.1 Warnings and Errors
10 Application Note 141
14110.1 Coordinate Systems 14110.2 Raw Data Measurements 14210.3 Ellipse (Fitted) 14310.4 X-Y-Profile Measurement 14310.5 Gaussian Fit Measurement 14410.6 Bessel Fit
11 Appendix 145
14511.1 Technical Data BP209 Series 14611.2 Technical Data M2MS-BP209 14711.3 Technical Data M2MS Extension Sets 14811.4 Typical Photodiode Response Curves 15011.5 Power Ranges

15111.6 Initial Settings 15211.7 Drawing BP209 15411.8 Slit and Photodiode Position 15511.9 Drawing BP209 Mounting Adapter 15611.10 Drawing M2MS-BP209 15711.11 Compatibility with Older Hardware 15811.12 List of Acronyms 15911.13 Safety 16011.14 Certifications and Compliances 16111.15 Return of Devices 16111.16 Manufacturer Address 16111.17 Warranty 16111.18 Exclusion of Liability and Copyright 16211.19 Thorlabs Worldwide Contacts

© 2022 Thorlabs
We aim to develop and produce the best solution for your application
in the field of optical measurement technique. To help us to live up to
your expectations and constantly improve our products we need
your ideas and suggestions. Therefore, please let us know about
possible criticism or ideas. We and our international partners are
looking forward to hearing from you.
Thorlabs GmbH
Warning
Sections marked by this symbol explain dangers that might result in
personal injury or death. Always read the associated information
carefully, before performing the indicated procedure.
Please read this advice carefully!
This manual also contains "NOTES" and "HINTS" written in this form.
Attention
Paragraphs preceded by this symbol explain hazards that could
damage the instrument and the connected equipment or may cause
loss of data.
Note
5

BP209 Series 1 General Information
Page 6 21424-D02
1 General Information
The BP209 Series Thorlabs Dual Scanning Slit Beam Profilers are ideal for analyzing cross
sectional profiles of near-Gaussian laser beams and can be operated in scanning-slit or knife-
edge modes. The beam diameter is measured in accordance with the ISO 11146 standard and
can be displayed using a number of industry-standard clip levels or an arbitrary clip level set by
the user. When the beam of interest does not have a near-Gaussian beam shape, or when
single-shot measurements of pulsed beams are required, we recommend the Thorlabs BC207
CMOS Camera Beam Profilers.
With the BP209 beam profiler, measurements of the intensity profiles along the user-specified
X and Y axes of the beam's cross section are acquired at scan rates between 2 Hz and 20 Hz,
Scan rates can bet set in the Beam Software. The fast 20 Hz scan rate enables real-time op-
tical system alignment. Primarily intended for CW laser beams, >10 Hz pulsed beams can also
be measured using an averaging technique.
These measurements can be used for beam quality evaluation, examination of the reconstruc-
ted beam profile, and monitoring long-term stability.
Three BP209 Dual Scanning Slit beam profiler models are available with different wavelength
ranges: BP209-VIS(/M), BP209IR1(/M), and BP209-IR2(/M). Each can be purchased as a met-
ric or imperial version. For the purpose of this manual, the versions are referred to a
BP209xxx(/M).
The Beam Software versions 8.0 and higher support the BP209 Beam Profiler. The Beam Soft-
ware is provided for download from the software tab on the Thorlabs website.
To convert Thorlabs beam profilers into a M² measurement system, Thorlabs offers the M2MS(-
AL) extension sets. For more information please visit the Thorlabs website.
1.1 Ordering Codes and Accessories
BP209-VIS
Slit Beam Profiler, 200 - 1100 nm, 9 mm aperture, 5 and 25 µm slits,
imperial version
BP209-VIS/M
Slit Beam Profiler, 200 - 1100 nm, 9 mm aperture, 5 and 25 µm slits,
metric version
BP209IR1
Slit Beam Profiler, 500 - 1700 nm, 9 mm aperture, 5 and 25 µm slits,
imperial version
BP209IR1/M
Slit Beam Profiler, 500 - 1700 nm, 9 mm aperture, 5 and 25 µm slits,
metric version
BP209-IR2
Slit Beam Profiler, 900 - 2700 nm, 9 mm aperture, 5 and 25 µm slits,
imperial version
BP209-IR2/M
Slit Beam Profiler, 900 - 2700 nm, 9 mm aperture, 5 and 25 µm slits,
metric version

BP209 Series 1 General Information
Rev: 8.1, 14-Feb-2022 © 2022 Thorlabs Page 7
M² Measurement System with Slit Beam Profiler
The M2MS-BP209 comprises the M2MS Extension and a mounted BP209 Beam Profiler. The
following models are available:
Item Number
Description
M2MS-BP209VIS-AL
M2 Measurement System with BP209-VIS, 250 - 600 nm
M2MS-BP209VIS-AL/M
M2 Measurement System with BP209-VIS, 250 - 600 nm, metric
M2MS-BP209VIS
M2 Measurement System with BP209-VIS, 400 - 1100 nm
M2MS-BP209VIS/M
M2 Measurement System with BP209-VIS, 400 - 1100 nm, metric
M2MS-BP209IR2
M2 Measurement System with BP209-IR2, 900 - 2700 nm
M2MS-BP209IR2/M
M2 Measurement System with BP209-IR2, 900 - 2700 nm, metric
Please visit our homepage http://www.thorlabs.com for further information.
1.2 Requirements
These are the requirements for the PC intended to be used for operation of the BP209 Series
of slit beam profilers using the Thorlabs Beam Software V8.0 or higher. Please find the BEAM
Software for download from the Beam Software website.
Hardware Requirements
·Processor (CPU): 3.0 GHz Intel Core (i5 or Higher)1
·Memory (RAM): 4.0 GB
·Graphic Card Resolution: OpenGL (specification GLX 1.3 up) compatible graphics
adapter:
·Radeon (X100 series X850, X1000 series X1600, HD
series 2400)
·Geforce 7 series 7600, 8 series 8500, 9 series 9600
·Quadro FX series FX770M
·Hard Drive: Min. 2 GB of available disk space
·Interface: Free USB 2.0 port
·Monitor resolution minimum 1024 x 758 pixel ( 16 bit color depth)
1) Intel Core i3 processors and mobile versions of Intel processors may not satisfy the re-
quirements.
The Thorlabs Beam Software is compatible with the following operating systems:
·Windows®8.1 (32-bit or 64-bit)
·Windows®10 (32-bit or 64-bit)
Recommended for Optimal Performance:
·USB 2.0 port
·Processor: Intel Core 2 i5 or AMD Ryzen 5 (min. 3.0 GHz), 8.0 GB RAM
·OpenGL (specification GLX 1.3 up) compatible graphics adapter:
§Radeon HD series 7000
§Geforce GTX series 500

BP209 Series 2 Getting Started
Page 8 21424-D02
2 Getting Started
Please inspect the shipping container for damage. Please do not cut through the cardboard.
You might need the box for storage or for returns.
If the shipping container seems to be damaged, keep it until you have inspected the contents
for completeness and tested the BP209 Series device mechanically and electrically.
Verify that you have received the following items within the package:
2.1 Parts List BP209-VIS(/M), BP209IR1(/M) and BP209-IR2(/M)
·1 BP209 Series Beam Profiler Instrument as an External Measurement Head with Dust
Cover
·1 USB 2.0 Cable A to Mini B, Length 3.0 m
·Quick Reference
2.2 Parts List M2MS with BP209 Series
If you have purchased am M2measurement system consisting of the M2MS Extension Set with
the BP209 Series Beam Profiler, the package will contain the following items:
1. M2MS-BP209VIS-AL(/M)
·M2MS-BP209VIS-AL (/M) Measurement System with mounted BP209-VIS (/M) Slit Beam
Profiler
·Power supply 100 to 240 V AC / 15 V 3 A DC
·Cable USB 2.0 A to Mini B, 3 m length
·Cable USB 2.0 A to Mini B, angled, 0.5 m length
·1 pcs. 0.05" Hex Key
·M2MS Accessory Box UV, that includes:
·1 pcs. LA4158-UV Plano Convex Lens, f = 250 mm, UV AR coating
·1 pcs. LA1461-A Plano Convex Lens, f = 250 mm, AR coating 350 - 700 nm
·4 pcs. CL6 Rail clamps
·1 pcs. M2MS Adjustment laser
·1 pcs. Ball Driver 3 mm
·1 pcs. spare screw M4x10
·Quick Reference
2. M2MS-BP209VIS(/M)
·M2MSBP-209VIS (/M) Measurement System with mounted BP209-VIS (/M) Slit Beam
Profiler
·Power supply 100 to 240 V AC / 15 V 3 A DC
·Cable USB 2.0 A to Mini B, 3 m length
·Cable USB 2.0 A to Mini B, angled, 0.5 m length
·1 pcs. 0.05" Hex Key
·M2MS Accessory Box VIS, that includes:
·1 pcs. LA1461-A Plano Convex Lens, f = 250 mm, AR coating 350 - 700 nm
·1 pcs. LA1461-B Plano Convex Lens, f = 250 mm, AR coating 650 - 1050 nm
·1 pcs. LA1461-C Plano Convex Lens, f = 250 mm, AR coating 1050 - 1700 nm
·1 pcs. LA5255-D Plano Convex Lens, f = 250 mm, AR coating 1650 - 3000 nm
·4 pcs. CL6 Rail clamps