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    Solid state laser with dual cooling loops
    3.
    发明授权
    Solid state laser with dual cooling loops 失效
    具有双重冷却回路的固态激光器

    公开(公告)号：US5327442A

    公开(公告)日：1994-07-05

    申请号：US944447

    申请日：1992-09-14

    申请人： J. Michael Yarborough ,  Gerald M. Mitchell ,  Kenneth J. Bossie

    发明人： J. Michael Yarborough ,  Gerald M. Mitchell ,  Kenneth J. Bossie

    IPC分类号： H01S3/04 ,  H01S3/042 ,  H01S3/045

    CPC分类号： H01S3/042 ,  H01S3/0407

    摘要： An optically-pumped solid state laser system having separate subsystems for cooling its gain medium and optical pumping assembly. The invention permits the operating temperatures of the gain medium and optical pumping assembly to be independently controlled, and permits a substantial increase in cooling efficiency as a result of independent control of coolant flow rates in the two cooling subsystems. In a class of preferred embodiments, the gain medium cooling subsystem includes a first channel through which coolant flows with relatively high flow rate and relatively low temperature (to maintain the gain medium at a desired low operating temperature), and the other cooling subsystem includes a second channel through which coolant flows with a relatively low flow rate and relatively high temperature. In one embodiment, the gain medium is a Holmium:YAG rod, and a Cerium doped glass tube surrounds the rod. Three to four gallons per minute of coolant flows through the tube to maintain the rod at an operating temperature in the range from about + 10 to - 15 degrees Celsius. The optical pumping assembly includes a set of flash lamps, and a Cerium doped glass tube surrounds each lamp. A total of no more than two gallons per minute of coolant flows through the tubes around the lamps, to maintain the lamps at a relatively high (but controlled) temperature.

    摘要翻译： 具有用于冷却其增益介质和光泵装置的单独子系统的光泵浦固态激光系统。 本发明允许独立地控制增益介质和光泵装置的操作温度，并且由于独立控制两个冷却子系统中的冷却剂流量，可以显着提高冷却效率。 在一些优选实施例中，增益介质冷却子系统包括第一通道，冷却剂以相对较高的流速和相对低的温度流动（以将增益介质保持在期望的低工作温度），另一个冷却子系统包括 冷却剂以相对低的流速和较高的温度流过的第二通道。 在一个实施例中，增益介质是钬：YAG棒，并且掺杂铈的玻璃管围绕该棒。 每分钟三到四加仑的冷却剂流过管子，以将棒保持在约+ 10至-15摄氏度的工作温度范围内。 光学泵组件包括一组闪光灯，并且掺杂有铈的玻璃管围绕每个灯。 总共不超过2加仑/分钟的冷却剂流过灯管周围的管道，以保持灯处于相对较高（但受控）的温度。