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To achieve the maximum output in single-frequency lasing mode it is necessary to minimize losses in the optical system for the output beam and to provide the optimal value of the frequency-selective feedback at the level, sufficient for stable single-frequency mode of operation. In this paper we investigate the scheme of an external cavity diode laser (ECDL) based on phase volume holographic grating...
We apply the self-calibrated sub-Doppler laser FM-spectroscopy to the study of hyperfine structure of molecular iodine. The ability of proposed technique to the high accurate measurements of iodine hyperfine structure in wide region of mode-hope free tuning of diode laser is demonstrated. The nonlinear absorption spectra of molecular iodine embedded into the pores of synthetic opal are studied with...
In a three-level lambda system, a destructive interference between excitation pathways at laser excitation can provide the resonant reduction of fluorescence and absorption (“dark resonance”). The dark resonances in rubidium vapor excited by a femtosecond laser or laser with frequency shifted feedback have been studied theoretically and experimentally.
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