초록 ▼

A gain medium is disposed between two mirrors to form a resonant cavity. The cavity length is selected so that the gain bandwidth of the gain medium is less than or substantially equal to the frequency separation of the cavity modes and such that a cavity mode frequency falls within the gain bandwid

A gain medium is disposed between two mirrors to form a resonant cavity. The cavity length is selected so that the gain bandwidth of the gain medium is less than or substantially equal to the frequency separation of the cavity modes and such that a cavity mode frequency falls within the gain bandwidth. A nonlinear optical material is disposed either inside or outside the cavity to generate new laser wavelengths. The nonlinear optical material may be contained in a cavity which is resonant at the microchip laser frequency. Alternatively, the microchip laser may be tuned, for example thermally or by the application of a longitudinal or transverse stress, to the frequency of the resonant cavity. The laser is optically pumped by any appropriate source such as a semiconductor injection laser or laser array. Suitable gain media include Nd:YAG, Nd:GSGG and Nd pentaphosphate, and suitable non-linear optical material include MgO:LiNbO3 and KTP.

대표청구항 ▼

Solid state, optically pumped microchip laser comprising: solid state gain medium disposed between two mirrors, the distance between the mirrors selected so that the gain bandwidth of the gain medium is less than or substantially equal to the frequency separation of the cavity modes and such that on

Solid state, optically pumped microchip laser comprising: solid state gain medium disposed between two mirrors, the distance between the mirrors selected so that the gain bandwidth of the gain medium is less than or substantially equal to the frequency separation of the cavity modes and such that one cavity mode frequency falls within the gain bandwidth of the medium; and nonlinear optical material disposed to receive light from the gain medium, the nonlinear optical material selected to generate second or higher harmonics of the light from the gain medium, said nonlinear optical material contained within a Fabry-Perot resonator.