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Compact Variable Laser Power Attenuators 990-0077, 990-0078

Compact Variable Laser Power Attenuators 990-0077, 990-0078

Compact Variable Attenuators designed to continuously attenuate linearly polarized laser beams. Clear aperture ⌀17 mm or ⌀22 mm. Models for fixed wavelengths from 257 nm to 1064 nm available, other wavelengths are available upon request.

from 1018 $
delivery Estimated delivery time: 4 - 5 days
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Compact Variable Attenuators, Clear Aperture ⌀17 mm
Code Wavelength Clear aperture Laser Damage Threshold Price Delivery Add to cart
990-0077-257 257 nm ⌀17 mm 1 J/cm² @ 257 m, 10 Hz, 10 ns 1199 $ Request
990-0077-266 266 nm ⌀17 mm 1 J/cm² @ 266 m, 10 Hz, 10 ns 1199 $ Request
990-0077-343 343 nm ⌀17 mm 3 J/cm² @ 343 m, 10 Hz, 10 ns 1117 $ Request
990-0077-355 355 nm ⌀17 mm 3 J/cm² @ 355 m, 10 Hz, 10 ns 1117 $ 4 - 5 days
990-0077-515 515 nm ⌀17 mm 5 J/cm² @ 515 m, 10 Hz, 10 ns 1018 $ 4 - 5 days
990-0077-532 532 nm ⌀17 mm 5 J/cm² @ 532 m, 10 Hz, 10 ns 1018 $ Request
990-0077-1030 1030 nm ⌀17 mm 10 J/cm² @ 1030 m, 10 Hz, 10 ns 1073 $ 4 - 5 days
990-0077-1064 1064 nm ⌀17 mm 10 J/cm² @ 1064 m, 10 Hz, 10 ns 1073 $ 4 - 5 days
Compact Variable Attenuators, Clear Aperture ⌀22 mm
Code Wavelength Clear aperture Laser Damage Threshold Price Delivery Add to cart
990-0078-257 257 nm ⌀22 mm 1 J/cm² @ 257 m, 10 Hz, 10 ns 1969 $ 4 - 5 days
990-0078-266 266 nm ⌀22 mm 1 J/cm² @ 266 m, 10 Hz, 10 ns 1969 $ Request
990-0078-343 343 nm ⌀22 mm 3 J/cm² @ 343 m, 10 Hz, 10 ns 1815 $ 4 - 5 days
990-0078-355 355 nm ⌀22 mm 3 J/cm² @ 355 m, 10 Hz, 10 ns 1815 $ 4 - 5 days
990-0078-515 515 nm ⌀22 mm 5 J/cm² @ 515 m, 10 Hz, 10 ns 1661 $ 4 - 5 days
990-0078-532 532 nm ⌀22 mm 5 J/cm² @ 532 m, 10 Hz, 10 ns 1661 $ 4 - 5 days
990-0078-1030 1030 nm ⌀22 mm 10 J/cm² @ 1030 m, 10 Hz, 10 ns 1788 $ 4 - 5 days
990-0078-1064 1064 nm ⌀22 mm 10 J/cm² @ 1064 m, 10 Hz, 10 ns 1788 $ 4 - 5 days

SPECIFICATIONS

MODEL 990-0077 990-0078
Clear Aperture Diameter 17 mm 22 mm
Attenuation range for reflected beam For 257 nm, 266 nm - 4% - 99%
For other wavelengths - 2% - 99.9%
Attenuation range for transmitted beam For 257 nm, 266 nm - 1% - 94%
For other wavelengths - 0.1% - 98%
Extinction Ratio >1∶1000
EKSMA Optics Compact Variable Laser Power Attenuators 990-0077, 990-0078
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  • Attenuation range for transmitted beam:
    • Typical: 0.1% - 98%
    • For 257 nm and 266 nm: 1% - 94%
  • Attenuation range for reflected beam:
    • Typical: 2% - 99.9%
    • For 257 nm and 266 nm: 4% - 99%
  • Extinction ratio: >1:1000
  • Clear aperture:
    • 990-0077 - ⌀17 mm
    • 990-0078 - ⌀22 mm

This manual variable attenuator series is designed to continuously attenuate linearly polarized laser beams. They feature precision opto-mechanics and high-LIDT optical components incorporated in a compact housing to ensure stable and reliable performance.

Attenuators are based on a Brewster-type thin film polarizer fixed at 56° and a quartz waveplate. The polarizer's angle of incidence can be manually adjusted to achieve the best contrast or to manipulate the direction of the reflected s-polarized beam. The waveplate is housed in a 360° continuous rotation mount, which can be manually rotated to control the output power of the transmitted and reflected beams.

The intensity of either beam or their intensity ration can be controlled over a wide dynamic range without alteration of other beam parameters. Pure p-polarization could be selected for maximum transmission, or pure s-polarization for maximum reflection.

The s-polarization exit port can be blocked with a removable low-power dumper which absorbs laser power up to 5 W. External beam dumps are recommended for high-power applications.