Manual Laser Power Attenuators

Manually adjusted variable attenuators for continuous control of linearly polarized laser beam power. A rotating quartz half waveplate changes polarization before thin film Brewster type polarizers or polarizing cube beamsplitters, splitting the beam into two beams of adjustable intensity ratio without altering other beam parameters. Versions cover UV to near infrared and nanosecond to femtosecond pulses, plus filter wheel attenuators holding neutral density filters.