Coherent light generators – Particular pumping means – Pumping with optical or radiant energy
Patent
1998-04-16
2000-12-05
Font, Frank G.
Coherent light generators
Particular pumping means
Pumping with optical or radiant energy
372 75, 372 34, 372 78, 372 10, 372 70, 372 72, 372 69, 372 92, 372101, 372 71, 372 79, H01S 3091
Patent
active
061576638
ABSTRACT:
A solid-state laser includes a high-absorption coefficient solid-state gain medium such as Nd:YVO.sub.4 that is side pumped with a semiconductor laser diode array. The resonant cavity of the solid-state laser is positioned so that the TEM.sub.00 mode is spaced from the face of the laser through which the laser is pumped by a distance sufficient to reduce diffraction losses but sufficiently near to allow coupling of pump light into the gain mode. The gain medium, the doping level of the gain medium, and the operating temperature of the pump laser are selected to efficiently couple pump light into the gain mode. The pump laser is positioned to side pump the gain medium without collimating or focusing optics between the pump laser and the face of the gain medium. A gap between the pump laser and the gain medium is empirically selected to match the angular extent of the pump laser output light to the height of the gain mode at the position of the gain mode fixed to optimize coupling and diffraction losses.
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Hemmati Hamid
Hug William F.
Partanen Jouni P.
Wu Xingkun
3-D Systems, Inc.
D'Alessandro Ralph
Flores Ruiz Delma R.
Font Frank G.
Wright William
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