Title :
Coherent nonlinear optical spectroscopy using photon-number squeezed light
Author :
Kilper, Daniel ; Schaefer, A.C. ; Erland, J. ; Steel, D.G.
Author_Institution :
Randall Lab. of Phys., Michigan Univ., Ann Arbor, MI, USA
Abstract :
Summary form only given. The photon-number squeezed light generated by an injection-locked quantum-well laser is used as the probe field in a nondegenerate (CW) differential-transmission (pump-probe) spectroscopy measurement of the Urbach tail and exciton resonances in a GaAs multiple quantum-well sample. Because of the nonclassical intensity fluctuations of the probe field, the measurement sensitivity in this experiment is 1.0 dB (20%) below the semiclassical shot noise limit (SNL). This measured quantum noise level is nearly one-third (below the SNL) of the fundamental nonclassical sensitivity limit (5.2 dB below the SNL) set by vacuum field fluctuations that enter through background losses (30%) in the sample.
Keywords :
III-V semiconductors; excitons; gallium arsenide; infrared spectra; infrared spectroscopy; interface states; laser mode locking; nonlinear optics; optical squeezing; photon counting; quantum noise; quantum well lasers; semiconductor quantum wells; shot noise; spectroscopic light sources; GaAs multiple quantum-well sample; Urbach tail; coherent nonlinear optical spectroscopy; exciton resonances; injection-locked quantum-well laser; measurement sensitivity; nonclassical intensity fluctuations; nondegenerate CW differential-transmission spectroscopy; photon-number squeezed light; probe field; pump-probe spectroscopy; quantum noise level; semiclassical shot noise limit; Elementary particle vacuum; Fluctuations; Laser excitation; Noise measurement; Nonlinear optics; Optical pumping; Optical sensors; Probes; Quantum well lasers; Spectroscopy;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1996. QELS '96., Summaries of Papers Presented at the
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-444-0
