Coupling mid-infrared “idler” photons with near-infrared “signal” photons enables cheaper, smaller and more efficient machines for uses such as greenhouse gas monitoring to medical diagnostics.

Sum-frequency generation (SFG) is a powerful vibrational spectroscopy that can selectively probe molecular structures at ...

Whether in a smartphone or laptop, semiconductors form the basis of modern electronics and accompany us constantly in ...

For decades, the ability to visualize the chemical composition of materials, whether for diagnosing a disease, assessing food ...

“Iris Green,” a pigment extracted from the petals of blue iris flowers, was popular in the medieval era as an alternative to ...