Spectroscopy measures how matter absorbs, emits, or scatters light as a function of wavelength. Each substance has characteristic spectral features, so spectroscopy is used to identify materials and measure concentrations in chemical analysis, gas sensing, and biomedical diagnostics. Near-infrared and short-wave infrared spectroscopy rely on detectors that respond beyond silicon’s range. GPD Optoelectronics manufactures standard and extended InGaAs photodiodes and two-color detectors for spectroscopy.
GPD Optoelectronics will exhibit at SPIE BiOS Expo 2027, January 30-31 in San Francisco. Visit Booth #8233 to discuss photodiode solutions for optical power monitoring, beam alignment, spectroscopy, and faster prototyping in biomedical systems.