Optical Choppers

Signal Recovery offers fully enclosed optical head light choppers.  The sync inputs are ideal for external referencing with the lock-in amplifiers.  They can perform up to frequencies of 3 kHz.

  • 197 Optical Chopper

    • Self contained chopper head
    • Quartz crystal frequency accuracy and stability
    • Internal or external frequency reference
    • Sync outputs
    • Fully enclosed housings for safety and low noise
    • Optical absorption, reflection and transmission measurements
    • Dual-beam ratiometric measurements
    • Automatic background subtraction in boxcar averager experiments

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