Laser Beam Attenuator

Clear aperture 15 mm bandwidth up to 20 nm optimization reflection or transmission type configuration λ 2 zo waveplate 1x or 2x thin film polarizers.

Laser beam attenuator.

The laser attenuator incorporates technology derived from a joint collaboration between edinburgh biosciences ltd and delta optical thin film a s. Motorized variable attenuator for femtosecond and nd yag laser pulses 990 0072m divides laser beam into two beams of manually adjustable intensity ratio separated by 68 angle large dynamic range tr. It incorporates a rotating achromatic λ 2 phase waveplate and two high performance broadband 72 thin film polarizers that separate s polarized and p polarized beams in parallel directions. The 248 nm attenuator can vary the output power from.

Parts list the following components are used to. Our laser beam attenuators provide high resolution intensity control without introducing a gradient in the intensity distribution or a change in the beam propagation direction. The variable attenuators provide highest reproducibility for laser processes. The ultrafast version of the attenuator is intended for laser pulses of 100 fs.

The stabilization of pulse energies in production processes is their main use. We also offer laser beam attenuation kits for ultrafast laser pulses. In the continuously variable attenuator two polarizers can be set to continuously control the transmitted beam power and independently set its polarization. The loma uses a wedge thin film coating design to control the intensity or power of the transmitted laser beam.

Variable attenuators for linearly polarized laser beam 990 0070. The damage threshold will be reached at 5 6 w which is well above the specified power of 2 4 w at 800 nm. Laser beam attenuator enhanced version. Continuously variable attenuation and defined polarization for co 2 laser beams a proprietary lasnix design enables a near perfectly transmitting linear polarizer with 40 db rejection.

For example if the beam diameter is 1 mm the maximum laser power at the attenuator should not exceed 4 w. Beam attenuators are available for 193 nm arf and 248 nm krf excimer lasers. Variable attenuators with ø 17 mm clear aperture composed of two thin film brewster type polarizers and a waveplate mounted into precision opto mechanics. Laser accessories manual attenuators.

To compensate the beam displacement generated by the dielectric filter a transparent second optic is also employed. Attenuator design allows to control the intensity between two exit beams over a wide dynamic range. The attenuators are multilayer dielectric coated fused silica optics that allow a variation in the amount of the transmitted energy by controlling the beam s angle of incidence. In the case of the mai tai femtosecond oscillator the beam diameter is 1 2 mm.