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Article
Josephson dynamics for coupled polariton modes under the atom–field interaction in the cavity
We consider a new approach to the problem of Bose–Einstein condensation (BEC) of polaritons for atom–field interaction under the strong coupling regime in the cavity. We investigate the dynamics of two macrosc...
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Article
Two-octave spectral broadening of subnanojoule Cr:forsterite femtosecond laser pulses in tapered fibers
Spectral broadening of femtosecond Cr:forsterite laser pulses is enhanced due to the use of tapered fibers. Supercontinuum generation with unamplified subnanojoule femtosecond Cr:forsterite laser pulses is obs...
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Article
Absolute frequency measurement of iodine lines with a femtosecond optical synthesizer
We have used a single laser femtosecond optical frequency synthesizer together with a widely tunable Nd:YAG laser to measure the absolute frequency of several absorption lines in molecular iodine around 532 nm...
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Article
Supernarrow saturated absorption resonances in weakly coupled two resonant optical cavities
The advantages of the weakly coupled two resonant optical cavities (hereinafter referred to as three-mirror cavity) used for observation of the supernarrow saturated absorption resonances are shown. Among thes...
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Article
A femtosecond self-mode-locked Ti:sapphire laser with high stability of pulse-repetition frequency and its applications
The spectral characteristics and stability of a frequency of intermode beats of a fs self-mode-locked Ti:sapphire laser are investigated. An active method is used to obtain high stability. The frequency stabil...
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Article
Acentric cubic NaClO3– a new crystal for Raman lasers
crystal were investigated. At room temperature under picosecond excitation efficient high-order stimulated Raman scattering in the visible and near-IR regions was observed. A total conversion efficiency of th...
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Article
Radiation noise of an active interferometer
An investigation of the behaviour of amplitude and frequency noise of radiation of an active interferometer in the regime of amplified optical bistability is presented. The phenomenon of non-amplification of ...
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Article
Nonlinear interaction of crossing FM waves with a gas
The new nonlinear phenomenon of the appearance of the modulation of the intensity of the frequency-modulated travelling wave saturated absorption medium is investigated. This effect enables one to estimate the...
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Article
Second-order doppler-free spectroscopy
The observation of second-order Doppler-free optical resonances with a width of 50 Hz are reported for the first time. It was achieved due to the use of optical selection of cold particles from an absorbing ga...
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Article
Superhigh resolution spectroscopy in methane with cold molecules
Use of optical selection of cold particles in saturated absorption spectroscopy is discussed. Owing to this we observed directly the splitting of a methane absorption line (λ=3.39 μm) due to recoil effect in a...
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Chapter and Conference Paper
Superhigh Resolution Laser Spectroscopy with Cold Particles
The results are first reported of investigations of the behaviour of a nonlinear resonance in methane at 3. 39 μm in the transit region depending on the saturating field intensity. It has been shown experiment...