laser beam attenuators and expanders - altechna · laser beam attenuators and expanders. 3 ... 100...

Laser Beam Attenuators

and Expanders

3

Attenuator selection guide

Laser Beam Attenuators

To select the right Watt pilot model one should consider the application carefully. Beam diameter, laser power, pulse duration, bandwidth, polarization, environmental conditions, requirement for maximum attenuation and beam misalignment should be taken into consideration. In order to pick suitable device, please follow selection guide below which will help you to get straight to the right model of Watt pilot.

Model Clear aperture

Band- width

Configu-ration

Optimi-zation

Attenua-tion range at CWL*

Typical applica-tion

Damage threshold1

More info

Standard

15 mm ±2 nmλ/2 LO waveplate + cemented PBS cube

Transmission/ reflection mode

0,5-95 %CW medium power lasers and LDs >0,3 J/cm2 10 Hz,

10 ns, 1064 nm

Page 515 mm ±10 nmλ/2 ZO waveplate + cemented PBS cube


0,5-95 %CW medium power lasers and LDs

10 mm ±10 nmλ/2 ZO waveplate + optically contacted PBS cube


0,5-95 %High power CW andpulsed lasers, LDs

>20 J/cm2 10 Hz, 10 ns,1064 nm

Enhanced

15 mm ±5 nmλ/2 ZO waveplate + 2x TFP

Reflection mode


>5 J/cm2 10 Hz,10 ns, 1064 nm; or>100 mJ/cm2 1 kHz 100 fs,800 nm

Page 6

15 mm ±20 nmλ/2 ZO waveplate + 2x broadband TFP

Reflection mode


15 mm ±5 nmλ/2 ZO waveplate + 1x Brewster TFP

Transmission mode


15 mm ±25 nm

λ/2 High energy waveplate + 1x High contrast TFP

Transmission mode

0.04-99 %High power CW and pulsed lasers

>20 J/cm2 10 Hz, 10 ns, 1064nm

Ultrafast

15 mm ±25 nm

λ/2 ZO waveplate + 2x Broadband (ultrafast) TFP

Transmission mode

1-85 %

Ultrafast, broadband laser sources with pulse length 100 - 50 fs

>5 J/cm2 10 Hz, 10 ns, 1064 nm; or>100 mJ/cm2 1 kHz 100 fs,800 nm

Page 7

15 mm ±25 nmTransmission Contrast mode

0,2-70 %

15 mm ±25 nmReflection mode

4-96 %

15 mm ±25 nmReflection Contrast mode

0,1-70 %

15 mm ± 50 nm

λ/2 achromatic waveplate + 2x broadband (ultrafast) TFP

Transmission mode

1-85 %

Ultrafast, broadband laser sources with pulse length <50 fs

15 mm ± 50 nmTransmission Contrast mode

0,2-70 %

15 mm ± 50 nmReflection mode

4-96 %

15 mm ± 50 nmReflection Contrast mode

0,1-70 %

Broadband 12 mm up to 5000 um

λ/2 Achromatic waveplate + Glan laser polarizer

Transmission mode

1-90 % NIR to MID-IR>5 J/cm2 10 Hz, 10 ns, 1064nm

Page 8

*CWL - Center Wavelength

4 5

Watt Pilot Motorized Attenuator

Description

Watt Pilot Motorized Attenuator is a computer controlled laser beam attenuator. It attenuates free space laser beam/pulse continuosly without introducing additional energy fluctuations. Watt Pilot is essential in systems, where stable laser power adjusting is necessary. Despite stand alone device look, motorized attenuator is very compact and it can be easily integrated in custom optical system.

Mechanical Specifications

Dimensions 91 x 63 x 187 mm - Ultrafast Reflection mode

91 x 63 x 167 mm - Ultrafast Transmission mode

91 x 63 x 108 mm - Enhanced Reflection mode

91 x 63 x 105 mm - Enhanced Transmission mode

91 x 63 x 75 mm - Standard with PBS cube

91 x 63 x 70 mm - Standard with HP PBS cube

Time between min and max attenuation

3 sec

Resolution 41.54 arcsec/step

Step accuracy in full rotation

± 4 steps*

Backlash ± 4 steps

* Step accuracy for single start/stop rotation (not full cycle) depends on acceleration and speed of stepper motor; these parameters are user-controlled.

Manual version of Watt Pilot model costs

750 € less than the motorized model found

in the catalogue.



in the catalogue.

compliant compliant

Watt Pilot - Motorized Attenuator, Standard Version

Description

Standard version incorporates rotating quartz λ/2 phase Waveplate and Polarizing Cube Beamsplitter which separates s-polarized and p-polarized beams. The intensity ratio of these two beams is continuously tuned by rotating the waveplate. Pure p-polarization should be selected for maximum transmission, and pure s-polarization - for maximum attenuation.

Watt Pilot is essential in systems, where stable laser power adjusting is necessary. Despite stand alone device look, Motorized Watt Pilot is very compact and it can be easily integrated in custom optical system.

Catalog Items

Clear aperture, mm

Opera- tional wave-length, nm

Band- width

Confi- guration

Optimi-zation


Damage threshold

Product ID Price

15

532 ±2 nm

λ/2 LO waveplate+ cemented polarizing cube


0.5-95 %

0.3 J/cm2 10 Hz, 10 ns, 1064 nm

2-CVB-MP-15-0532-M 1350 €

780 ±2 nm 0.5-95 % 2-CVB-MP-15-0780-M 1350 €

1064 ±2 nm 0.5-95 % 2-CVB-MP-15-1064-M 1350 €

1550 ±2 nm 0.5-95 % 2-CVB-MP-15-1550-M 1350 €

15

532 ±10 nm

λ/2 ZO waveplate + cemented polarizing cube


0.5-95 %

>0.3 J/cm2 10 Hz, 10 ns, 1064 nm

2-CVB-MPEP-15-0532-M 1390 €

780 ±10 nm 0.5-95 % 2-CVB-MPEP-15-0780-M 1390 €

1064 ±10 nm 0.5-95 % 2-CVB-MPEP-15-1064-M 1390 €

1550 ±10 nm 0.5-95 % 2-CVB-MPEP-15-1550-M 1390 €

10

355 ±10 nm

λ/2 ZO waveplate + High energy polarizing cube


0.5-95 %

>20 J/cm2 10 Hz, 10 ns, 1064 nm

2-CVB-EPOC-10-0355-M 1610 €

532 ±10 nm 0.5-95 % 2-CVB-EPOC-10-0532-M 1560 €

1064 ±10 nm 0.5-95 % 2-CVB-EPOC-10-1064-M 1560 €

1550 ±10 nm 0.5-95 % 2-CVB-EPOC-10-1550-M 1560 €


6 7

Watt Pilot - Motorized Attenuator, Enhanced Version

Description

Enhanced version incorporates rotating quartz λ/2 phase Waveplate and one or two thin film polarizers which separate s-polarized and p-polarized beams. The intensity ratio of these two beams is continuously tuned by rotating the waveplate.

Watt Pilot is essential in systems, where stable laser power adjusting is necessary. Despite stand alone device look, motorized attenuator is very compact and it can be easily integrated in custom optical system.

Catalog Items

Clear aperture, mm


Band- width

Confi- guration

Optimi-zation


Damage threshold

Product ID Price

15

266 ±5 nm

λ/2 ZO waveplate + 2x TFP

Reflection mode

0.3-99 %

>5 J/cm2 10 Hz, 10 ns, 1064 nm; or>100 mJ/cm2 1 kHz 100 fs, 800 nm

2-EWP-R-0266-M 1500 €

343 ±5 nm 0.3-99 % 2-EWP-R-0343-M 1470 €

355 ±5 nm 0.3-99 % 2-EWP-R-0355-M 1470 €

400 ±5 nm 0.3-99 % 2-EWP-R-0400-M 1470 €

515 ±5 nm 0.3-99 % 2-EWP-R-0515-M 1470 €

532 ±5 nm 0.3-99 % 2-EWP-R-0532-M 1470 €

780 ±5 nm 0.3-99 % 2-EWP-R-0780-M 1470 €

800 ±5 nm 0.3-99 % 2-EWP-R-0800-M 1470 €

1064 ±5 nm 0.3-99 % 2-EWP-R-1064-M 1470 €

1550 ±5 nm 0.3-99 % 2-EWP-R-1550-M 1470 €

780-820 ±20 nm λ/2 ZO waveplate + 2x broadband (ultrafast) TFP

Broadband reflection mode

0.5-98 % 2-EWP-BBR-0800-M 1570 €

1020-1040 ±20 nm 0.5-98 % 2-EWP-BBR-1030-M 1570 €

266 ±5 nm

λ/2 ZO waveplate + TFP

Transmission mode

0.5-95 % 2-EWP-T-0266-M 1480 €

355 ±5 nm 0.5-95 % 2-EWP-T-0355-M 1450 €

400 ±5 nm 0.5-95 % 2-EWP-T-0400-M 1450 €

515 ±5 nm 0.5-95 % 2-EWP-T-0515-M 1450 €

532 ±5 nm 0.5-95 % 2-EWP-T-0532-M 1450 €

780 ±5 nm 0.5-95 % 2-EWP-T-0780-M 1450 €

780-820 ±5 nm 0.5-95 % 2-EWP-T-7882-M 1490 €

800 ±5 nm 0.5-95 % 2-EWP-T-0800-M 1450 €

1020-1040 ±5 nm 0.5-95 % 2-EWP-T-1030-M 1490 €

1064 ±5 nm 0.5-95 % 2-EWP-T-1064-M 1450 €

1550 ±5 nm 0.5-95 % 2-EWP-T-1550-M 1450 €


Watt Pilot - Motorized Attenuator, Ultrafast Version

Description

Ideal for ultraSHORT laser pulses (down to 20 fs).

Ultrafast version incorporates rotating quartz λ/2 phase waveplate and two (or one) high-performance broadband 72 degree polarizers. The intensity ratio of these two beams is continuously tuned by rotating the waveplate.

There are 4 types of ultraFAST attenuators: they can be reflection or transmission type and contrast or transmission/reflection optimized.

Catalog Items

Clear aperture, mm


Band- width

Confi- guration

Optimi-zation

Attenua- tion range at CWL*

Damage threshold

Product ID Price

15

775-825 ±25 nm

λ/2 ZO waveplate + Broadband (ultrafast) TFP

Transmission mode

1-85 %

10 ns @ 1064 nm

>100 mJ/cm2 @100 fs, 800 nm

2-UWP-T1-800-M 1970 €

1005-1055 ±25 nm 1-85 % 2-UWP-T1-1030-M 1970 €

775-825 ±25 nm Transmission contrast mode

0.2-70 % 2-UWP-T2-800-M 1970 €

1005-1055 ±25 nm 0.2-70 % 2-UWP-T2-1030-M 1970 €

775-825 ±25 nm Reflection mode

4-96 % 2-UWP-R1-800-M 1970 €

1005-1055 ±25 nm 4-96 % 2-UWP-R1-1030-M 1970 €

775-825 ±25 nm Reflection contrast mode

0.1-70 % 2-UWP-R2-800-M 1970 €

1005-1055 ±25 nm 0.1-70 % 2-UWP-R2-1030-M 1970 €

750-850 ± 50 nm

λ/2 achromatic waveplate+ Broadband (ultrafast) TFP

Transmission mode

1-85 %

10 ns @ 1064 nm

>100 mJ/cm2 @100 fs, 800 nm

2-UWPA-T1-800-M 2130 €

980-1090 ± 50 nm 1-85 % 2-UWPA-T1-1030-M 2130 €

750-850 ± 50 nm Transmission contrast mode

0.2-70 % 2-UWPA-T2-800-M 2130 €

980-1090 ± 50 nm 0.2-70 % 2-UWPA-T2-1030-M 2130 €

750-850 ± 50 nm Reflection mode

4-96 % 2-UWPA-R1-800-M 2130 €

980-1090 ± 50 nm 4-96 % 2-UWPA-R1-1030-M 2130 €

750-850 ± 50 nm Reflection contrast mode

0.1-70 % 2-UWPA-R2-800-M 2130 €

980-1090 ± 50 nm 0.1-70 % 2-UWPA-R2-1030-M 2130 €




in the catalogue.



in the catalogue.

compliant compliant

8 9

Watt Pilot - Motorized Attenuator, Broadband Version

Description

Ideal solution for NIR and MID-IR wavelengths, where wide operation wavelength range is required. Broadband motorized attenuator version incorporates rotating quartz λ/2 waveplate and Glan Laser type polarizer which separates s-polarized and p-polarized beams. S-polarized beam is eliminated in a beam dump, while p-polarized beam’s instenisty is continuously tuned by rotating the waveplate. Watt Pilot is essential in systems, where stable adjustment of laser power is necessary. Despite stand alone device look, motorized attenuator is very compact and can be easily integrated in custom optical systems.

Catalog Items

Clear aperture, nm

Operational wavelength, nm

Configuration Attenuation range

Damage threshold

Product ID Price

12

650-1100

λ/2 Achromatic waveplate + Glan laser polarizer

1 - 90 %

>5 J/cm2 10 Hz, 10 ns, 1064 nm

2-BBWP-T-NIR1-M 3320 €

900-2100 1 - 90 % 2-BBWP-T-NIR2-M 3320 €

2000-4000 1 - 90 % 2-BBWP-T-MIR1-M 3320 €

3000-5000 1 - 90 % 2-BBWP-T-MIR2-M 3320 €

PowerXP Compact Motorized Attenuator

Description

Compact version of Altechna’s Motorized Attenuator. This device attenuates free space laser beam (or pulse) continuously without introducing additional energy fluctuations. Contrast better than 3000:1 (Tp:Ts) is achieved since this attenuator is mounted with high contrast polarizer. This very compact version of attenuator can be easily integrated in custom optical systems.

Catalog Items

Clear aperture, mm

Operational wavelength, nm

Attenuation range

Polarization contrast

Product ID Price

8 343 0.1 - 97% >1000:1 6-PWRXP-343 1200 €

8 355 0.1 - 97% >1000:1 6-PWRXP-355 1200 €

8 400 0.1 - 98% >1000:1 6-PWRXP-400 1200 €

8 515 0.1 - 99% >1000:1 6-PWRXP-515 1200 €

8 532 0.1 - 99% >1000:1 6-PWRXP-532 1200 €

8 780-820 0.5 - 95% >200:1 6-PWRXP-780-820 1200 €

8 800 0.1 - 99% >1000:1 6-PWRXP-800 1200 €

8 1020-1040 0.5 - 95% >200:1 6-PWRXP-1020-1040 1200 €

8 1030 0.04 - 99% >3000:1 6-PWRXP-1030 1200 €

8 1064 0.04 - 99% >3000:1 6-PWRXP-1064 1200 €



in the catalogue.

compliant

compliant

Standard specifications

Optimization transmission mode

Typical application high power CW and pusled lasers

Clear aperture 8 mm

Configuration 1/2 high power waveplate + 1 high contrast TFP

Dimensions 60x32x64 mm

Time between min and max attenuation

1 sec

Resolution <15 arcsec/step

10 11

Laser Beam Expanders Variable Beam Expanders

Description

Variable beam expander is Galilean type telescope, which allows compact design which is reasonable for industrial environment. Employed lenses are air spaced, thus expanders are suitable for high power applications. Altechna offers three different types of beam expanders, each type is targeted to specific application:

• For Nd:YAG lasers

• For femtosecond lasers

• For two wavelengths (e.g. high power beam + guiding beam, or fundamental + harmonic)

Standard beam expanders are designed for four most popular lasers: Nd:YAG; Ti:Sapphire; Yb:KGW and Yb:YAG, but custom wavelengths are available. Standard mouinting thread is M27x1, which is compatible with common 4-axis mounts.

Models with 1.5x-5x and 1x-8x magnification distinguish by their “fixed-length” design which simplifies both integration and usage.


Lens material UVFS

Trasnmitted wavefront distortion

λ/4 p-v @ 632 nm

Overall transmission 97 %

Laser induced damage threshold

>5 J/cm2 10 Hz, 10 ns, 1064 nm

Mounting thread M27x1

Housing material black anodized aluminium

→ Read furtherCatalog items

12 13

Catalog Items

Nd:YAG line

Line Expansion Wave-length, nm

Input aperture, mm

Exit aperture, mm

Housing diameter, mm

Housing length, mm

Product ID Price

Nd:YAG

2x-8x1064 11 36 45 - 50 130 - 145 6-BE-Tx2-8-1064 1100 €

532 11 36 45 - 50 130 - 145 6-BE-Tx2-8-0532 1100 €

2x-11x 355 11 36 45 - 50 130 - 145 6-BE-Tx2-8-0355 1100 €

3x-9x 266 11 36 45 - 50 130 - 145 6-BE-Tx2-8-0266 1100 €

1,5x-5x

1064 8 30 45 130 6-BE-Tx1,5-5-1064 1100 €

532 8 30 45 130 6-BE-Tx1,5-5-0532 1100 €

355 8 30 45 130 6-BE-Tx1,5-5-0355 1100 €

2x-8x

1064 6 25 20 - 45 100 - 120 6-BE-sTx2-8-1064 800 €

532 6 25 20 - 45 100 - 120 6-BE-sTx2-8-0532 800 €

355 6 25 20 - 45 100 - 120 6-BE-sTx2-8-0355 800 €

1,5x-4x

1064 12 16 28 110 -120 6-BE-sTx1.5-4-1064 495 €

532 12 16 28 110 -120 6-BE-sTx1.5-4-0532 495 €

355 12 16 28 110 -120 6-BE-sTx1.5-4-0355 495 €

5x-8x

1064 12 16 28 95 -115 6-BE-sTx5-8-1064 524 €

532 12 16 28 95 -115 6-BE-sTx5-8-0532 524 €

355 12 16 28 95 -115 6-BE-sTx5-8-0355 524 €

1x-8x

1064 7 40 60 148 6-BE-Tx1-8-1064 1320 €

532 7 40 60 148 6-BE-Tx1-8-0532 1320 €

355 7 40 60 148 6-BE-Tx1-8-0355 1320 €

Femtosecond compatible

Femtosecond

2x-8x 1030 11 36 45 - 50 130 - 145 6-BE-Tx2-8-1030 1290 €

2x-11.5x800 11 36 45 - 50 130 - 145 6-BE-Tx2-8-0800 1290 €

515 11 36 45 - 50 130 - 145 6-BE-Tx2-8-0515 1290 €

2x-11x 343 11 36 45 - 50 130 - 145 6-BE-Tx2-8-0343 1290 €

2x-8x1030 6 25 20 - 45 100 - 120 6-BE-sTx2-8-1030 935 €

515 6 25 20 - 45 100 - 120 6-BE-sTx2-8-0532 935 €

1,5x-5x

1030 8 30 45 130 6-BE-Tx1,5-5-1030 1290 €

515 8 30 45 130 6-BE-Tx1,5-5-0515 1290 €

343 8 30 45 130 6-BE-Tx1,5-5-0343 1290 €

Dual Wavelength

Dual Wavelength

2x-8x

1064 / 532 11 36 45 - 50 130 - 145 6-BE-Tx2-8-1064-532 1450 €

1030 / 515 11 36 45 - 50 130 - 145 6-BE-Tx2-8-1030-515 1450 €

800 / 400 11 36 45 - 50 130 - 145 6-BE-Tx2-8-0800-400 1450 €

1,5x-5x

1064 / 532 8 30 45 130 6-BE-Tx1,5-5-1064-532 1450 €

1030 / 515 8 30 45 130 6-BE-Tx1,5-5-1030-515 1450 €

800 / 400 8 30 45 130 6-BE-Tx1,5-5-0800-400 1450 €

Fixed Ratio Beam Expanders

Description

Altechna’s beam expanders are assembled using one diverging and one converging lenses, so there is no focal point inside the beam expander, thus it can be used for high powers. For low expansion ratios (1.3 - 20 times) the Galilean beam expander is preferred due to its simplicity and small size. We offer beam expanders made from two, three, or more spherical lens made from BK7, FS, UVFS or other glasses which suit high power applications. Beam expander for any wavelength between 266 - 2000 nm is available on request.


Lens material UVFS

Transmitted wavefront distortion

λ/4 p-v @ 632 nm

Overall transmission 97%

Laser induced damage threshold

>5 J/cm2 10 Hz, 10 ns, 1064 nm

Mounting thread SM1

Housing material black anodized aluminium

→ Read furtherCatalog items

14 15

Catalog Items

Type Expansion Wavelength, nm

Input aperture, mm

Exit aperture, mm

Housing length, mm

Product ID Price

Nd:YAG line

2x 1064 6 12 56-62 BE-2X-1064-S 270 €

3x 1064 5 15 56-62 BE-3X-1064-S 270 €

4x 1064 4,5 18 66-72 BE-4X-1064-S 270 €

5x 1064 3,5 17,5 78-84 BE-5X-1064-S 270 €

6x 1064 2,2 13,2 82-88 BE-6X-1064-S 270 €

8x 1064 2 16 110-118 BE-8X-1064-S 270 €

10x 1064 1,8 18 138-148 BE-10X-1064-S 270 €

2x 532 6 12 56-62 BE-2X-532-S 270 €

3x 532 4,5 15 56-62 BE-3X-532-S 270 €

4x 532 4 16 66-72 BE-4X-532-S 270 €

5x 532 3 15 78-84 BE-5X-532-S 270 €

6x 532 2 12 82-88 BE-6X-532-S 270 €

8x 532 1,8 14,5 110-118 BE-8X-532-S 270 €

10x 532 1,5 15 138-148 BE-10X-532-S 270 €

2x 355 5 10 56-62 BE-2X-355-S 270 €

3x 355 5 15 56-62 BE-3X-355-S 270 €

4x 355 4 16 66-72 BE-4X-355-S 270 €

5x 355 3 15 78-84 BE-5X-355-S 270 €

6x 355 2 12 82-88 BE-6X-355-S 270 €

8x 355 1,8 14,5 110-118 BE-8X-355-S 270 €

10x 355 1,5 15 138-148 BE-10X-355-S 270 €

MOTEX - Motorized Variable Beam Expander

Specifications

Lens material Optical crown glass or UV grade fused silica

Continously variable magnification

2.5x…12x

Entrance beam diameter up to 10 mm

Output beam diameter up to 48 mm

Overall transmission 98.5 %

LIDT >7 J/cm2 for 10 ns pulses @ 1064 nm

Control interfaces USB 2.0; UART (RS232); Step/Dir

Software platform WindowsTM

Weight 1 kg

Catalog Items

Wavelength, nm Lens material Product ID Price

1020 – 1070 BK7 6-MBE-1 2225 €

510 – 540 BK7 6-MBE-2 2225 €

340 – 360 UVFS 6-MBE-3 2625 €

Reflective Beam Expander

Description

Reflective beam expander (RBE) a spherical mirror-based device for beam expansion or reduction. Reflective Galilean design ensures no unwanted plasma screening or thermal lensing effects and is perfect for high power applications. Equipped with Low GDD Ultrafast mirrors reflective beam expanders are intended for Ti:Sapphire, Nd:Glass, Er:Glass or Ytterbium doped active media based lasers working in femtosecond regime.

Catalog Items

Wavelength, nm

Magnification Max aperture, mm

Coatings Dimensions L x W x H, mm

Product ID Price

750 – 850 2x 3 Dielectric 184 x 54 x 55 6-RBE-Tx2-75-85 1100 €


600-1200 2x 3 Metallic 184 x 54 x 55 6-RBE-Tx2-S 950 €



600-1200 4x 2 Metallic 210 x 55 x 55 6-RBE-Tx4-S 950 €

Tel. +370 5 27 25 738 Fax +370 5 27 23 707 [email protected]

Mokslininkų st. 6A 08412 Vilnius, Lithuania

www.altechna.com

laser beam attenuators and expanders - altechna · laser beam attenuators and expanders. 3 ... 100...

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