Request InfoPerkinElmer InstrumentsThe model 198A dual-beam light chopper from PerkinElmer Instruments Signal Recovery is suitable for pump-probe and optical ratiometric experiments. It uses a quartz crystal oscillator as its primary frequency standard for accuracy and stability in beam modulation frequency. The device also can be used as a single beam chopper to generate modulation frequencies from 55 to 1500 Hz by selecting the appropriate aperture. The light chopper's electrical reference signal can drive the reference channel of a lock-in amplifier or other signal recovery instruments.See full productRelated content from Photonics MediaWEBINARSPhotonics.com 1/12/2023A Proven, Portable, and PIC-Based Methodology for Cultivating a Next-Generation WorkforceWith the passage of the CHIPS and Science Act and growing demand for photonic integrated circuit technology, the semiconductor industry is once again gaining momentum. But even as the U.S. rebuilds...Photonics.com 6/30/2021European Photonics Manufacturing Services Funded by ECThis event is supported by the European initiatives presented and is moderated by EPIC, the European Photonics Industry Consortium. The European Commission is helping companies access the...Photonics.com 1/9/2023Innovations in Ultrashort-Pulse and RF-Excited CO2 Lasers Expand Materials Processing ApplicationsIndustrial laser materials processing is constantly evolving. Industries as varied as pharmaceutical, consumer electronics, automotive, aerospace, and textiles, among others, have benefited from new...Photonics.com 1/18/2018Fiberguide RARe Motheye Fiber: Random Anti-Reflective (RARe) Nanostructures on Optical Fibers as Replacement for AR CoatingsAnti-reflective (AR) coatings are now entering their second century and have remained virtually unchanged throughout their life. As power level and wavelength range requirements continue to increase,...