Semiconductor Physics, Quantum Electronics & Optoelectronics, 2 (2), P. 36-41 (1999)

PACS 42.55.Lt

Polarization unstabilities in a quasi-isotropic He-Ne laser in axial magnetic field

G.L. Kononchuk, S.M. Yegorov*

Taras Shevchenko Kyiv Univ., 6 Glushkova Prosp., 252127 Kyiv, Ukraine
Tel. 8 044 261 36 77, E-mail:
* Tel. 8 044 443 02 93, E-mail:

Semiconductor Physics, Quantum Electronics & Optoelectronics. 1999. V. 2, No 2. P.36-41. Eng. Il.: 4. Ref.:3

Abstract. On the basis of the general Lamb model the set of six coupled nonlinear differential equations has been derived for two-mode l = 0.63 mm laser operation with the presence both amplitude and phase anisotropy and axial magnetic field. Numeric integration of the set of equations and the Lyapunov stability analysis have been proceeded. It turned out that in zero magnetic field in the presence of the amplitude anisotropy both stable time-independed states with parallelly or orthogonally polarized modes and non-stationary state are possible. Changing orientation and nonorthogonality/nonparallelity of polarization planes in magnetic field are considered. Influence of mode-mode interaction is discussed.

Keywords: anisotropy, He-Ne laser, magnetic field, polarization unstability.

Paper received 28.05.99; revised manuscript received 08.07.99; accepted for publication 12.07.99.

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