| 摘要 |
<p>Solid-state laser (100) with tube-shaped active medium (108) having an amplifier module (120) configured to provide an optical gain for a source light, the amplifier module comprising: a tube (108) having an interior surface and an exterior surface, the tube including a laser gain material (108a) ; a first substrate (107a) adjacent the interior surface of the tube (108) , the first substrate including a first plurality of microchannels (132) ; a second substrate (107b) adjacent the exterior surface of the tube (108) , the second substrate includign a second plurality of microchannels (132) ; and a plurality of diode bars (101) arranged exterior to the second substrate (107b) and configured to provide optical pump radiation to the laser gain material (108a) . The tube (108) may include two identically loaded laser gain elements (108a) separated by a 90 degree toric quartz rotator (118) and optically transparent endcaps (106) . The laser may comprise axicon, waxicon or reflaxicon optics (103) to convert the annular beam to a compacted cylindrical beam. Plural amplifier modules (220) may be concatenated. Advantageously, thermal lensing effects, birefringence, bifocussing, and alignment problems associated with typical tube SSLs are eliminated or reduced while providing high beam quality and high average power levels.</p> |
