Request InfoTerahertz Technologies Inc.The C-995 phase-locked loop optical chopper provides crystal-controlled chopping rates of 4 Hz to 5 KHz using only one blade. The use of direct digital synthesis permits the rate to be set to a precision of 0.001 Hz and provides quartz-crystal stability. Frequency settings may be made via front-panel controls or its bidirectional RS-232 port, or the device may be phase-locked to a user-supplied external clock. Both enclosed and open-style chopper heads are available.See full productRelated content from Photonics MediaPRODUCTSPhotonics Showcase September 2023 IssueBeam Analysis for AM TechsOphir® BeamPeek™ software for field technicians is easy-to-use beam analysis software for fast, accurate, real-time measurement of lasers in additive chambers. Designed for field...Photonics Spectra November 2023 IssueMiniature SpectrometerThe MiniRaman miniature spectrometer from Opton Laser International measures 25 × 30 × 105 mm and weighs 0.5 kg. 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