Fabry-Perot interferometer

What is a Laser Spectrum Analyzer?

A Laser Spectrum Analyzer (LSA) can be defined as a high resolution spectrometer aimed at the characterization of narrow linewidth light sources. In other words it measures the spectral density of a laser as a function of the wavelength. These instruments are typically used to check the spectral purity of laser sources, or to measure their Full Width Half Maximum. It exists two main methods to perform spectral analysis: Grating based Laser Spectrum Analyzers: Using one or several diffraction grating…