Patent ID: 7330493

Claim:
A module for producing stable and low-noise laser output at a wavelength that cannot be directly emitted from a solid-state gain medium comprising: two independent gain media characteristic of polarization dependent absorption; a single light source selected from the group including a laser diode, a free-space single emitter, a diode bar, a diode array, a fiber-coupled single emitter, a fiber-coupled bar, and a fiber bundle array; a polarization control element or mechanism for rotating the light source polarization such that the two independent gain media emit laser beams at desired wavelengths with a desired intensity ratio; a light delivery system for directing the light source to the beam split element, further comprising a fiber, and/or a set of separate lenses or micro lenses; a beam split element for splitting the incident light through interactions with one or more polarization sensitive surface(s); an electrical control system for driving the light source and for optionally controlling the polarization of the light source; an optional thermoelectric cooler for automatic temperature control of pump diodes and laser device; and an interface for exiting and coupling the produced dual beam with a particular application, wherein: said application is performed in one or more nonlinear optical crystal(s); said two independent gain media are so oriented that their preferable absorption directions are mutually orthogonal; said gain media and nonlinear optical crystals are optically bonded each other to form a monolithic microchip laser; whereby said module is a compact and efficient diode pumped solid-state laser featured with intracavity frequency conversion.