Quantum optics and sub-shot noise spectroscopy with squeezed semiconductor lasers

摘要

Methods to obtain intensity squeezing in semiconductor laser are discussed and compared with theoretical predictions of several models. An important application of these lasers is high-sensitivity spectroscopy. We show that the classical technique of FM modulation spectroscopy can be transposed to squeezed semiconductor lasers. A narrow detection bandwidth and a high modulation index, together with the sub-shot noise source, lead to a minimum detectable signal that is a few parts in 10(8). [References: 28]