Theory of a high-intensity gas laser
TL;DR: In this paper, single mode gas laser theory for arbitrary field intensities in terms of ensemble averaged form of density-matrix equations of motion is proposed for any arbitrary field intensity.
Abstract: Single mode gas laser theory for arbitrary field intensities in terms of ensemble averaged form of density-matrix equations of motion
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TL;DR: In this paper, the authors proposed a three-dimensional model of the radiation field and showed that it can be represented by three levels of level-crossing: zero magnetic field level crossing, high-field level crossing and high-frequency level crossing.
291 citations
TL;DR: In this paper, the standing-wave saturation resonances were observed by subjecting the CO2 absorber gas to the 10.6-μ laser field and detecting the change induced in the entire 4.3-μ (001) → (000) spontaneous emission band.
Abstract: The standing‐wave saturation resonances are observed by subjecting the CO2 absorber gas to the standing‐wave 10.6‐μ laser field and detecting the change induced in the entire 4.3‐μ (001) → (000) spontaneous emission band as the laser frequency is tuned within the Doppler profile of a specific 10.6‐μ transition. Long‐term stabilization on any oscillating transition is achieved.
177 citations
TL;DR: The physical phenomena that dominate the power characteristics of a laser depend on the detailed nature of the amplifying medium and the resonator structure, and numerous approximations are always required.
Abstract: The physical phenomena that dominate the power characteristics of a laser depend on the detailed nature of the amplifying medium and the resonator structure. In predicting the power characteristics, numerous approximations are always required. The most important approximations are considered here in detail, and error estimates are presented so that a designer can select the appropriate model for a particular application. Emphasis is placed on analytic solutions and specific phenomena considered include longitudinal and transverse spatial hole burning, large single-pass gain, and mixed line broadening.
102 citations
TL;DR: In this article, a coherent pulsation effect is reported in which the output of a CW laser oscillator is localized in periodic short bursts of energy, and experimentally observed pulse trains resulting from this instability are in agreement with solutions of the governing quantum mechanical equations and cannot be predicted from the usual rate equation models.
Abstract: A coherent pulsation effect is reported in which the output of a CW laser oscillator is localized in periodic short bursts of energy. The experimentally observed pulse trains resulting from this instability are in agreement with solutions of the governing quantum mechanical equations and cannot be predicted from the usual rate equation models.
93 citations
TL;DR: In this article, the semiclassical description of an RF resonance measurement on a doublet excited state is formulated, and the solution of the density matrix equation of motion is obtained as a continued fraction.
Abstract: The semiclassical description of an RF resonance measurement on a doublet excited state is formulated. The solution of the density matrix equation of motion is obtained as a continued fraction. The single quantum and multiple quantum transitions are seen as resonances in the measured quantities. An analytic solution is obtained for the case of degenerate doublet (the Hanle phenomena) and the RF modification of the g-value is obtained. It is shown that the continued fraction solution gives simple computations of strong field saturation effects.
77 citations