Abstract

We have demonstrated phase-sensitive FM noise spectroscopy, using the frequency noise of a diode laser. We obtained the reference signal for this experiment by sending part of the diode-laser beam through a Mach–Zehnder interferometer, which acted as a frequency discriminator. Both the reference beam (prepared with an interferometer) and the probe beam (which probed a Fabry–Perot cavity) carried amplitude noise converted from the intrinsic frequency noise. Mixing the two noise signals allowed us to measure the absorptive and dispersive responses of the sample. This method may provide a simple and sensitive spectroscopic tool.

© 1996 Optical Society of America

Amplitude-squeezed, frequency-modulated, tunable, diode-laser-based source for sub-shot-noise FM spectroscopy

Steven Kasapi, Seema Lathi, and Yoshihisa Yamamoto
Opt. Lett. 22(7) 478-480 (1997)

Frequency noise reduction of a diode laser by using the FM sideband technique

K. Nakagawa, M. Kourogi, and M. Ohtsu
Opt. Lett. 17(13) 934-936 (1992)

High-frequency-modulation spectroscopy with a lead-salt diode laser

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Frequency-modulation spectroscopy with transform-limited nanosecond laser pulses

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Opt. Lett. 21(3) 225-227 (1996)

Frequency-modulation spectroscopy of rubidium atoms with an AlGaAs diode laser

S. Nakanishi, H. Ariki, H. Itoh, and K. Kondo
Opt. Lett. 12(11) 864-866 (1987)