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Nonlinear properties of the laser as an amplifier

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Soviet Radiophysics Aims and scope

Summary

The paper presents the results of a theoretical analysis of an optical traveling-wave amplifier, to whose input are applied monochromatic pulses of frequency equal to the transition frequency. At distances z≽p(c/2δ) |2N2−N1|/ /(N1−N2) where p>1, and for δ<2πω0aN1 all input pulses assume the form of a stationary pulse (see Eq. (33)). The stationary signal intensity, duration and total energy are substantially dependent on the nonresonant loss in the medium, the relaxation time T2 and the initial inversion population difference N1. For loss values δ>2πω0aN1 the input pulses are attenuated.

In the amplifier model considered we have assumed the laser medium to have a uniformly broadened line. This enables us to apply the results of the investigation to a ruby laser which satisfies this condition (by excluding low temperatures).

The neglect of pumping and the lifetime T1 is permissible for values of δ not too close to 2πω0aN1.

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Authors and Affiliations

  1. Moscow State University, Moscow, USSR

    T. M. II'inova & R. V. Khokhlov

Authors
  1. T. M. II'inova
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  2. R. V. Khokhlov
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Additional information

Izvestiya VUZ. Radiofizika, Vol. 8, No. 5, pp. 899–908, 1965

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II'inova, T.M., Khokhlov, R.V. Nonlinear properties of the laser as an amplifier. Soviet Radiophysics 8, 639–645 (1965). https://doi.org/10.1007/BF01038822

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  • DOI: https://doi.org/10.1007/BF01038822

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