Abstract

The simplicity and high efficiency make microchip lasers pumped by diode lasers quite attractive candidates as stable coherent sources. Their spectral purity, low order longitudinal mode operation, quite high power of order of tens of milliwatts are the main advantages of these lasers. The bulk microchip laser with rigid resonator formed by compact mirrors (directly coated on the crystal walls) has qualitatively different spectrum of frequency fluctuation compare to the open laser resonator with separate mirrors. This unusual behaviour of stability can be explained by monolithic structure of the microchip lasers. The known methods of frequency tuning, like for example PZT or electrooptical, are not convenient in monolithic microchip lasers. Hence, there is our effort put to the new and simple mechanism of laser frequency tuning.

© 2001 EPS