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Issue		Europhys. Lett. Volume 45, Number 3, February 1999
Page(s)		307 - 313
Section		Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics
DOI		10.1209/epl/i1999-00164-y

DOI: 10.1209/epl/i1999-00164-y


Europhys. Lett, 45 (3), pp. 307-313 (1999)

Atomic interference in a microchip laser
operating on a $\Lambda$ transition

K. Otsuka ¹, E. A. Viktorov ² and P. Mandel ³

¹ Department of Applied Physics, School of Engineering, Tokai University
1117 Kitakaname, Hiratsuka, Kanagawa, 259-12 Japan
² Institute for Laser Physics - 199034 St. Petersburg, Russia
³ Optique Nonlinéaire Théorique, Université Libre de Bruxelles
Campus Plaine C.P. 231, B-1050 Brussels, Belgium

(received 11 September 1998; accepted 27 November 1998)

PACS. 42.50Gy - Effects of atomic coherence on propagation, absorption, and amplification of light.
PACS. 42.60Mi - Dynamical laser instabilities; noisy laser behavior.

Abstract:

In a $\rm LiNdP_$ microchip laser pumped by a diode laser, atomic interference arise due to the simultaneous oscillation on two transitions forming a $\Lambda$ configuration. For a microchip laser, the low-frequency coherence is an important dynamical variable. It is coupled to the low spatial frequency of the population inversion grating. This results in modal intensities which are self-pulsing while the total intensity remains nearly constant. In addition, the modal power spectra display combinations of the relaxation oscillation frequencies which are absent in the power spectrum of the total output power.

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