Laser Beam Attenuator

Laser accessories manual attenuators.

Laser beam attenuator.

The laser attenuator incorporates technology derived from a joint collaboration between edinburgh biosciences ltd and delta optical thin film a s. 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. Variable attenuators for linearly polarized laser beam 990 0070. Beam attenuators are available for 193 nm arf and 248 nm krf excimer lasers.

The 193 nm attenuator can change the output power from about 20 to 85 transmission. Variable attenuators with ø 17 mm clear aperture composed of two thin film brewster type polarizers and a waveplate mounted into precision opto mechanics. The 248 nm attenuator can vary the output power from. In the case of the mai tai femtosecond oscillator the beam diameter is 1 2 mm.

We also offer laser beam attenuation kits for ultrafast laser pulses. The variable attenuators provide highest reproducibility for laser processes. 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. 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.

Attenuator design allows to control the intensity between two exit beams over a wide dynamic range. 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. The laser attenuator allows user control of attenuation by combining the loma with a. To compensate the beam displacement generated by the dielectric filter a transparent second optic is also employed.

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. 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. Parts list the following components are used to. Laser beam attenuator enhanced version.

Laser beam attenuator enhanced version. For example if the beam diameter is 1 mm the maximum laser power at the attenuator should not exceed 4 w. The damage threshold will be reached at 5 6 w which is well above the specified power of 2 4 w at 800 nm. The ultrafast version of the attenuator is intended for laser pulses of 100 fs.