Laser having a passive pulse modulator and method of making same
    2.
    发明授权
    Laser having a passive pulse modulator and method of making same 失效
    具有无源脉冲调制器的激光器及其制造方法

    公开(公告)号:US5666373A

    公开(公告)日:1997-09-09

    申请号:US597330

    申请日:1996-02-06

    摘要: A laser having a gain medium disposed in a resonant cavity having a pair of end reflectors. One of such reflectors has a reflectivity lower than the reflectivity of the other one of the reflectors. The reflectors are arranged to provide a single ended output for the cavity through the one of the reflectors having the lower reflectivity. A saturable absorber is formed on the one of the reflectors having the lower reflectivity. With such an arrangement, fabrication of the saturable absorber on the single ended output coupler is greatly simplified. The gain medium is a doped fiber and the saturable absorber formed on the one of the reflectors having the lower reflectivity is affixed to an end of the doped fiber gain medium. With such an arrangement, a highly efficient, relatively low cost, mode locked laser is provided.

    摘要翻译: 具有设置在具有一对端反射器的谐振腔中的增益介质的激光器。 这种反射器之一具有低于另一个反射器的反射率的反射率。 反射器被布置成通过具有较低反射率的反射器中的一个提供用于空腔的单端输出。 在具有较低反射率的反射器之一上形成可饱和吸收体。 通过这样的布置,单端输出耦合器上的可饱和吸收体的制造大大简化。 增益介质是掺杂光纤,并且形成在具有较低反射率的反射器中的可饱和吸收体固定到掺杂光纤增益介质的端部。 通过这种布置,提供了高效率,相对低成本的锁模激光器。

    Gain medium for radiant energy source
    3.
    发明授权
    Gain medium for radiant energy source 失效
    获得辐射能源的介质

    公开(公告)号:US4945543A

    公开(公告)日:1990-07-31

    申请号:US401706

    申请日:1989-09-01

    申请人: Richard C. Sharp

    发明人: Richard C. Sharp

    摘要: A carbon dioxide (CO.sub.2) waveguide laser is used to provide coherent infrared radiation. The mixture of gases in the laser includes helium, nitrogen, carbon dioxide, carbon monoxide, xenon and heavy hydrogen (deuterium). Carbon dioxide is the gain medium of the laser. During operation of the laser, a significant fraction of the CO.sub.2 dissociates to CO and O.sub.2. In the present invention, deuterium (D.sub.2) in the presence of excess CO catalyzes the recombination of CO and O.sub.2 back to CO.sub.2, thus yielding significantly increased power output from the laser. The presence of D.sub.2 also sustains a long sealed life from the CO.sub.2 laser at an enhanced power output level.