We analyze a simple model that demonstrates the feasibility of using optical squeezed states to enhance the detection sensitivity limits of frequency-modulation laser-absorption spectroscopy. The model shows that the most significant noise reduction would result by squeezing the weak frequency-modulated sidebands rather than the strong carrier and that losses in the optical detector could be made to set the limiting noise floor. By using currently available detectors, an order-of-magnitude improvement in the quantum-limited sensitivity of frequency-modulation spectroscopy may be possible.
© 1987 Optical Society of America
Original Manuscript: October 27, 1986
Manuscript Accepted: January 26, 1987
Published: April 1, 1987
B. Yurke and E. A. Whittaker, "Squeezed-state-enhanced frequency-modulation spectroscopy," Opt. Lett. 12, 236-238 (1987)