Researchers at NIST have developed a new technique for measuring near-infrared light with unprecedented sensitivity. The method, which uses existing avalanche photodiode detectors, can detect single photons in the near-infrared range by converting them to visible light using a strong, tunable laser.
The new system offers over 1,000 times greater sensitivity than conventional optical spectral instruments. This breakthrough could enable new applications in disease research, pharmaceutical development, secure communications, and forensic analysis.
The technique builds on previous NIST research in quantum cryptography and could potentially revolutionize infrared spectroscopy by making it more accessible and affordable. The researchers have published their findings in Optics Express, making the technology available to the broader scientific community.
Keywords: Spectra, Infrared, Photon, Detector, Up-conversion
