Volume 45, Number 3, February 1999
|Page(s)||307 - 313|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 September 2002|
Atomic interference in a microchip laser operating on a Λ transition
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
Accepted: 27 November 1998
In a microchip laser pumped by a diode laser, atomic interference arise due to the simultaneous oscillation on two transitions forming a 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.
PACS: 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light / 42.60.Mi – Dynamical laser instabilities; noisy laser behavior
© EDP Sciences, 1999
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