Two-photon absorption and quantum light spectroscopy have emerged as transformative tools in modern optical research. At the heart of these techniques is the simultaneous absorption of two photons to ...

Infrared light was discovered 2 as a result of the problem it caused William Herschel while he was making astronomical observations of the Sun — it created a disturbing heating sensation in his eye ...

Infrared spectroscopy (IRS) is a technique used to analyze individual substances in isolation or a mixture, using their spectral information. IRS is based on the measurement of the wavelength and ...