kHz Linewidth Laser Characterization using Low Frequency and Excess Noise Measurements
Seyed Saman Mahjour,
Mareli Rodigheri,
Cristiano M Gallep
et al.
Abstract:Low frequency noise (LFN) of highly coherent laser (linewidth below 10 kHz) is analyzed using an unbalanced Mach-Zehnder interferometer (UMZI) with adjustable long arm span. Furthermore, the Laser Relative Excess Noise (LREN) is introduced here to set a comparison of the laser coherence in relation to its emission power. The LREN is obtained using the addition of laser high and low frequency noises that appear in excess to the ideal power spectral density (PSD) Lorentzian distribution. Using this approach, it … Show more
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