IdealPhotonics' laser linewidth measurement system is a professional instrument for high-precision quantification of the spectral purity of laser sources. Its core function is to analyze the spectral energy distribution of the laser using optical or electrical methods, accurately measure the laser linewidth (full width at half maximum, FWHM), and evaluate the laser's frequency stability and phase noise characteristics.Through ultra-fine spectral analysis techniques (such as heterodyne/optical coherence methods), it achieves high-precision quantification of laser linewidth from Hz to GHz levels, while also possessing dynamic monitoring and multi-scenario adaptability capabilities.