Newport LBP2-SAM2 Laser Beam Sampler User manual

Brand: Newport

Model: LBP2-SAM2 Laser Beam Sampler

Type: User manual

Newport LBP2-SAM2 Laser Beam Sampler is a compact laser beam sampling system that allows you to measure laser beams with diameters up to 15mm and powers ranging from 10mW to ~400W. It can be used with C-mount cameras to capture beam profiles, measure beam power and energy, and analyze beam quality.

The LBP2-SAM2 features a unique design that maintains the original polarization of the beam under test conditions. It uses two beam splitters to direct the beam through a set of interchangeable ND filters 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.

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]

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

[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 reection 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

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

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 signicantly polarized in the S and P

planes.

Alternatively, two units can be coupled in series providing up to

-8

attenuation

0.5mW to ~400W for LBP2-SAM-BB2

e LBP2-SAM-BB2 passes 0.25% to the camera.

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 proler soware 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 eects 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

the ND lters may start to thermal lens

and deform the observed beam prole.

Note:

Cauon:

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 eect 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

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 specications

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 dierent 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

3 3 4

Holder

Number

e attenuations at specied wavelengths are available in the charts below.

UV lter set (Blue Holders)

Filter ND value vs. Wavelength

UV Range

260 280 300 320 340 360 380

Wavelength λ, nm

Density

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

0.7

0.3

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

1064 nm

0.7

0.3

Document No: 50399-001 Rev AAugust 29, 2017

Notes:

Document No: 50399-001 Rev A

August 29, 2017

Notice

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.

Newport LBP2-SAM2 Laser Beam Sampler User manual

Brand: Newport

Model: LBP2-SAM2 Laser Beam Sampler

Type: User manual

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Newport LBP2-SAM2 Laser Beam Sampler User manual

Newport LBP2-SAM2 Laser Beam Sampler User manual

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