Phase-polarization methods for control of the frequency spectrum of laser radiation
A theoretical analysis is made of the methods for control of the frequency spectrum of laser radiation on the basis of conversion of the frequency dependence of the refractive index of the active medium into the frequency dependence of the losses. The conversion is made by rotation of the plane of polarization (Faraday effect) or by phase anisotropy established in the active medium. The formalism of the Jones matrices is used to obtain the dependence of the losses on the angle of rotation of the plane of polarization or on the degree of phase anisotropy in some specific cases. A calculation is reported of the frequency dependence of the losses within the Voigt gain profile with specific parameters. Experimental results obtained for He--Ne lasers emitting at lambda=3.39 and 0.63..mu.. support the usefulness of these methods in frequency selection and narrowing of the emission spectrum.
- Research Organization:
- Institute of Physics, Academy of Sciences of the Belorussian SSR, Minsk
- OSTI ID:
- 7118708
- Journal Information:
- Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 7:1; ISSN SJQEA
- Country of Publication:
- United States
- Language:
- English
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