We report for the first time to our knowledge an experimental demonstration of wavelength self-tuning in a K<sub>5</sub>Nd (MoO<sub>4</sub>)<sub>4</sub> broadband-emitting laser crystal (KNM), as well as a theoretical treatment of the system based on its birefringence properties. The self-frequency-tuning of the laser along the full spectral range of the KNM crystal was obtained by rotating a birefringent gain plate in its own plane. The gain plate was placed inside a resonator at Brewster's angle. The tuning characteristics of the spectral filter were obtained by use of the Jones vector formalism. The calculated wavelength-selective tuning precisely matches the experimental observations.
© 2003 Optical Society of America
Joaquin Fernandez, Ignacio Iparraguirre, Ibon Aramburu, Asuncion Illarramendi, Jon Azkargorta, Mihail Voda, and Rolindes Balda, "K5Nd(MoO4)4 :a self-tunable laser crystal," Opt. Lett. 28, 1341-1343 (2003)