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Author Baryshev, Vyacheslav N. ♦ Epikhin, V. M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ♦ ABSORPTION ♦ CESIUM ♦ DESIGN ♦ DIFFRACTION ♦ DISPERSIONS ♦ FABRICATION ♦ FREQUENCY CONTROL ♦ FREQUENCY MODULATION ♦ IMPEDANCE ♦ LASERS ♦ RAMAN SPECTRA ♦ RESONANCE ♦ SPECTROSCOPY ♦ TRAPPING ♦ VAPORS ♦ ALKALI METALS ♦ COHERENT SCATTERING ♦ CONTROL ♦ ELEMENTS ♦ FLUIDS ♦ GASES ♦ METALS ♦ MODULATION ♦ SCATTERING ♦ SORPTION ♦ SPECTRA
Abstract We report fabrication of a new acousto-optic modulator (AOM-RN) operating purely in the Raman - Nath diffraction regime. This device can be used as an external phase modulator in frequency-modulation (FM) optical heterodyne spectroscopy for fast and broadband frequency control of diode lasers. The AOM-RN design is significantly simplified, and its dimensions are minimised due to a decrease (by almost an order of magnitude in comparison with the existing AOMs) in the acousto-optic interaction length and the absence of impedance matching circuit. The FM spectroscopy based on AOM-RN makes it possible to analyse both absorption and dispersion properties of optical resonances under study; this possibility is shown by the example of saturated-absorption resonances in cesium vapour. The possibility of detecting coherent population trapping resonances using FM spectroscopy with AOM-RN as an external phase modulator is experimentally demonstrated.
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-08-03
Publisher Place United States
Journal Quantum Electronics
Volume Number 40
Issue Number 5


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