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Document No: 50399-001 Rev AAugust 29, 2017
LBP2-SAM-2
Beam Sampler for C-mount
Cameras
P/N LBP2-SAM-UV2, LBP2-SAM-VIS2, LBP2-SAM-NIR2 and LBP2-
SAM-BB2
User Notes
Newport Corporation
1791 Deere Avenue
Irvine, CA 92606
www.newport.com
For Sales, Service or Technical Support
Phone (887) 835-9620
Fax (949) 253-1680
E-mail: [email protected]
E-mail: [email protected]
© Copyright 2017, Newport Corporation, Irvine, California
Document No: 50399-001 Page 1 of 8 Rev A
August 29, 2017
Components
Input Port
ND Filters
Exit Port
Locking Ring
Camera
Dimensions
[37.64mm]
1.482in
[36.83mm]
1.450in
[46.99mm]
1.850in
[51.56mm]
2.030in
[115.57mm]
4.550in
[15.24mm]
.600in
[35.56mm]
1.400in
1.00-32 UN-2B
.170
(C-MOUNT)
[52.07mm]
2.050in
[20.32mm]
.800in
[25.15mm]
.990in
[57.15mm]
2.250in
[60.05mm]
2.364in
2X
[88.90mm]
3.500in
[45.72mm]
1.800in
72.39[mm]
2.850in
Nominal Path Length = 2.820in [71.63mm]
[50.80mm]
2.000in
[20.83mm]
.820in
1.00-32 UN-2A
.300
(C-MOUNT)
[7.62mm]
.300in
[3.81mm]
150in
1.035-40 UN-2B
.500
Document No: 50399-001 Page 3 of 8 Rev A
August 29, 2017
Introduction
e design of the beam sampler maintains the original
polarization of the beam under test conditions.
e front surface reection from two beam splitters
directs the beam through the lter slides and then on to
the camera sensor. Approximately 97-99% of the beam
is transmitted through the beam sampler with ≥ 0.01%
passed on to the camera
2
.
A set of interchangeable ND lters are provided to make
nal intensity adjustments to the beam before it reaches the
camera imager.
e LBP2-SAM-2 beam sampler attachment for C-mount, CS-mount, or Ophir mount cameras allows you to
measure laser beams with diameters up to 15mm and powers ranging from 10mW to ~400W
1
.
LBP2-SAM-2 and SP900 camera
For additional attenuation, an external wedge
(Part Number SPZ17015 or SP90273) may be mounted at the
input port; however this 3rd wedge will cause polarization
selectivity when the beam is signicantly polarized in the S and P
planes.
Alternatively, two units can be coupled in series providing up to
10
-8
attenuation
3
.
1
0.5mW to ~400W for LBP2-SAM-BB2
2
e LBP2-SAM-BB2 passes 0.25% to the camera.
3
6x10
-6
attenuation for the LBP2-SAM-BB2
Document No: 50399-001 Page 4 of 8 Rev AAugust 29, 2017
Camera
Installation and Setup
1. e LBP2-SAM-2 is attached to the camera as shown above in
Figure 1. An adjustable locking ring is provided so that the beam
sampler can be rotated in any orientation.
2. Position the LBP2-SAM-2 so the laser beam enters the center of the
input port at a 90° incidence. e beam will exit the LBP2-SAM-2
turned approximately 6 degrees in the direction shown in Figure 2.
Provision must be made to safely contain the transmitted beam. An
optional beam dump is available to contain the beam if required.
A 1.035-40 thread is provided behind each wedge along the axis
of the output beam that can be used to directly mount accessories
with 1” lens tubes such as beam dumps or even power and energy
sensors to the LBP2-SAM-2.
Figure 1
Input Beam
enters at 90°
Camera
Port
Beam Dump
or additional
accessory
Output Beam
Figure 2
Warning:
You must provide a beam stop for the laser
beam that passes through the beam sampler.
e beam stop must be able to withstand the
continuous power/energy of the input beam.
Input Port
Document No: 50399-001 Page 5 of 8 Rev A
August 29, 2017
3. Adjust the position of the LBP2-SAM-2
so that the beam will exit the center of the
camera port. An alignment xture consist-
ing of a ground glass plate is provided to as-
sist in aligning visible beams to the camera
imager. is plate allows you to directly
view a visible or UV beam (UV by second-
ary emissions). In the NIR, you will need
to use an NIR viewer or a visible alignment
beam. To use the alignment xture. Screw
the xture onto the camera port and center
the image of the beam in the plate. See
Figure 3. When the LBP2-SAM-2 is aligned,
remove the alignment xture and attach the
camera.
Figure 3
Input Beam
Output Beam
Beam Image
Alignment Target
Operation
1. Start the beam proler soware and adjust the ND lter holders until the maximum beam intensity is
approximately 80% of saturation. See Appendix A for ND lter details. If there are interference eects seen, slight
angling of the camera-sampler setup to the beam path may eliminate this.
2. If no picture is seen, check again that the beam is aligned into the sampler. If the image is saturated when
the maximum ND lters are in place, lower the camera signal below saturation by reducing the camera exposure
setting . is can also be done by removing the camera, adding one or more of the C-mount ND lters provided
with the camera, and remounting the camera.
At power levels >5 Watts/cm
2
the ND lters may start to thermal lens
and deform the observed beam prole.
Note:
Cauon:
e damage threshold for the ND lters is 50 Watts/cm². Make
sure the power density in the beam as it hits the ND lters does not
exceed this amount. If the beam is converging (focusing) rather than
collimated, be sure to take this eect into consideration as well.
Document No: 50399-001 Page 6 of 8 Rev AAugust 29, 2017
Ordering Information
Compact Laser Beam Sampling Systems for C-mount Cameras
Part No.
LBP2-SAM-UV2 LBP2-SAM-VIS2 LBP2-SAM-NIR2 LBP2-SAM-BB2
Wavelength
266-355nm 400-700nm 1064nm 190-1550nm
Wedge Material
UVFS UVFS UVFS UVFS
Wedge Coating
A/R ≤1% A/R ≤1% A/R ≤1% None
Clear aperture
17.5mm
17.5mm 17.5mm 17.5mm
Wedge ND value,
each
ND ≥2 ND ≥2 ND ≥2 ND ~1.3
ND Filters
Inconel Bulk ND Bulk ND
One each of the UV,
VIS, & NIR sets
ND Values, nom-
inal
.3, .7, 1.0, 1.5, 2.5, 3.0
(Blue holders)
.3, .7, 1.0, 2.0, 3.0, 4.0
(Green holders)
.4, .8, 1.0, 2.0, 3.0,
4.0 (Red holders)
See UV, VIS and
NIR descriptions
Filter Slides
3 3 3 9
Filter Damage
1
100 W/cm² CW
20mJ/cm², 10ns pulse
50 W/cm²
1J/cm², 10ns pulse
50 W/cm²
1J/cm², 10ns pulse
See UV, VIS and
NIR specications
Accessories*
Additional Wedge
Splitters
SPZ17015
15mm clear aperture
SP90273
30mm clear aperture
Features:
• C-mount stackable design compatible with most other C-mountable accessories
• Wedges removable for replacement and cleaning
• Multiple mounting points
• Marked for easy use
• Lenses can be added for Focal Spot Analysis operation and divergence analysis
• Power/Energy meter at 1st exit port can measure ~99% (~95%-BB) of input beam
* Available as special order. Consult your Newport or Ophir-Spiricon representative.
Document No: 50399-001 Page 7 of 8 Rev A
August 29, 2017
Appendix A: ND Filters
e ND lters provided with each LBP2-SAM-2 allow for nal attenuation of the laser beam up to ND 6. Each
lter in the holder provides for a dierent value of attenuation. To use, slide the desired holder into the slot in the
LBP2-SAM-2. A click is felt when the lter is properly aligned with the beam.
Holder
Number Filter A Filter B
1 0.3 0.7
2 1
2
3 3 4
Holder
Number
B
e attenuations at specied wavelengths are available in the charts below.
UV lter set (Blue Holders)
Filter ND value vs. Wavelength
UV Range
0
1
2
3
4
260 280 300 320 340 360 380
Wavelength λ, nm
Density
4
3
2
1
0.7
0.3
Document No: 50399-001 Page 8 of 8 Rev AAugust 29, 2017
VIS lter set (Green Holders)
NIR lter set (Red Holders)
Filter ND value vs. Wavelength
Visible Range
0.0
1.0
2.0
3.0
4.0
5.0
350 400 450 500 550 600 650 700 750 800
Wavelength λ, nm
Density
2
0.7
0.3
1
3
4
Filter ND value vs. Wavelength
NIR Range
0.0
1.0
2.0
3.0
4.0
5.0
700 750 800 850 900 950 1000 1050 1100 1150 1200 1250 1300 1350 1400 1450 1500 1550
Wavelength λ, nm
Density
1
2
3
1064 nm
4
0.7
0.3
Document No: 50399-001 Rev AAugust 29, 2017
Notes:
Document No: 50399-001 Rev A
August 29, 2017
Notice
© 2017 Newport Corporation All Rights Reserved. Newport Corporation reserves the right to make improve-
ments in the product described in this User Guide at any time and without notice.
All rights to the product and any accompanying operator’s manuals are reserved. While every precaution has
been taken in the preparation of this product, the publisher and author assume no responsibility for errors,
omissions, or any loss of data because of said errors or omissions.
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