Non-Gaussian fundamental laser mode oscillation in end-pumped Nd:YVO4 microchip laser
2002; Elsevier BV; Volume: 201; Issue: 1-3 Linguagem: Inglês
10.1016/s0030-4018(01)01665-0
ISSN1873-0310
AutoresGilles Martel, Christophe Labbé, François Sanchez, Michaël Fromager, Kamel Aı̈t-Ameur,
Tópico(s)Semiconductor Lasers and Optical Devices
ResumoFar-Field non-Gaussian fundamental transverse modes have been obtained in CW end-pumped Nd:YVO4 microchip laser for particular cavity lengths. Such profiles appear at threshold and are not distorted when pump power increases but they strongly depend on the pump to mode size ratio. An implemented theoretical model qualitatively reproduces these transverse profiles. It is based on the hypothesis of diffraction effects of the resonant intra-cavity field on a Gaussian-gain profile. Dependence of the pump to mode size ratio on such profiles will be also theoretically explained.
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