Diffractive Variable Beam Attenuators E-mail
Diffractive attenuators control the power of laser radiation using diffraction gratings. Since phase diffraction gratings do not absorb light they can be used to attenuate also high-power laser radiation (cw, pulsed). Variation of grating parameters along the attenuator results in variable transmission at a given wavelength. TOPAG offers attenuators for wavelengths of 1064, 800, 532, 355 and 248 nm.
Diffractive_Variable_Beam_Attenuator
Further features:
- based on non absorbing phase grating for high power beam attenuation
- continious, linear attenuation through 0 - 340o rotation angle
- no beam profile distortion
- independent on polarization
- for pulsed and cw lasers
- free aperture: 12 - 15 mm (1/e2)
- easy handling with encapsulated rotative housing
- for beam diagnostic and monitoring