Single & Dual Wavelength AR Coatings (VAR / DAR)

 

 

Specifications

Type:

VAR

DAR

Reflectance:

< 0.25% @ 0°AOI
< 0.5% @ 45° AOI

< 0.25% @ Λ1, < 0.5% @ Λ2 for 0°AOI
< 0.5% @ Λ1,< 1.0% @ Λ2 for 45°AOI

Damage Threshold:

> 5 J / cm² @ 10 ns

> 5 J / cm² @ 10 ns

Durability:

MIL-C-675

MIL-C-675

  • Low loss V-coatings

  • Dual wavelength coatings

  • Both types available for 0° and 45°

  • Suitable for high power applications

A single wavelength V-coat will provide reflectance less than 0.25% for 0° incidence or 0.5% for 45° incidence at the chosen wavelength. Dual wavelength coatings will approach the performance of V-coats for two selected wavelengths. They are useful for optics which must transmit a visible alignment laser as well as a UV or near IR process beam. It is also useful for transmission of fundamental and first harmonic wavelengths.

 

Part No.

Type

Wavelengths Covered (nm)

VAR2 -

Single wavelength

two sides

193, 213, 248, 266, 308, 337, 355, 441.6, 488, 514.5, 527, 532, 632.8, 670, 680, 694.3, 780, 830, 905, 1047, 1053, 1064, 1310, 1319, 1540, 1550, 2010, 2100, 2940

DAR2 -

Dual wavelength two sides

Λ1 = 193, 213, 248, 266, 308, 337, 355, 441.6, 488, 514.5, 527, 532, 632.8, 670, 680, 694.3, 780, 830, 905, 1047, 1053, 1064, 1310, 1319, 1540, 1550, 2010, 2100, 2940
Λ2= other wavelengths in the visible and near infra-red

Other wavelengths are also available on request. Please specify.

Please contact Lambda’s sales team for coating service on customer supplied material.