Frequency doubled laser with an intracavity nonlinear, quasi-phase matching element

摘要

The invention refers to a laser having first and second reflecting elements (3, 4) defining a laser cavity; a laser microchip (1) provided in the laser cavity to generate laser radiation of a fundamental wavelength; and a quasi-phase matching non-linear optical element (2) provided in the laser cavity to receive said laser radiation of the fundamental wavelength from the laser microchip (1) and to emit frequency doubled laser radiation (SH) of a wavelength half as long as the fundamental wavelength.