公开(公告)号：US5043997A

公开(公告)日：1991-08-27

申请号：US730123

申请日：1985-05-03

申请人： Clifford E. Morrow ,  Richard S. Eng

发明人： Clifford E. Morrow ,  Richard S. Eng

IPC分类号： H01S3/036 ,  H01S3/038

CPC分类号： H01S3/036 ,  H01S3/038

摘要： A laser is provided comprising a laser envelope and a gain medium disposed in the laser envelope. The gain medium comprises a compound subject to dissociation into a plurality of components. Circuitry is included for generating an electrical discharge in the laser envelope, a portion of the electrical discharge passing through the gain medium and disassociating a portion of the compound thereof into the plurality of components. The discharge generating circuitry comprises a cathode, the cathode comprising a first portion for emitting the electrical discharge toward an anode. Such first portion comprises a catalyst for aiding the recombination of the dissociated plurality of components. The first portion of the cathode sputters particulates therefrom during the electrical discharge and a surface is disposed within the laser envelope for collecting the sputtered particulates. Means, including a second portion of said cathode, are additionally provided for spacing the first portion of the cathode sufficiently from the collecting surface to substantially prevent the electrical discharge from being emitted from the first portion to the collected particulate, and thereby constrain the electrical discharge to occur substantially directly between the cathode and the anode. With such arrangement, the sputtered particulates are inhibited from entering the resonant cavity of the laser and adhering to the optics thereof. Thus, the useful operating life of the laser is increased.

摘要翻译： 提供了包括激光外壳和设置在激光外壳中的增益介质的激光器。 增益介质包括经解离成多个组分的化合物。 包括用于在激光外壳中产生放电的电路，一部分放电通过增益介质并将其化合物的一部分分解成多个组分。 放电发生电路包括阴极，阴极包括用于向阳极发射放电的第一部分。 这样的第一部分包括用于帮助解离的多个组分的重组的催化剂。 在放电期间阴极喷射器的第一部分从其中微粒化，并且表面设置在激光外壳内以收集溅射的微粒。 另外提供了包括所述阴极的第二部分的装置，用于将阴极的第一部分与收集表面充分隔开，以基本上防止放电从第一部分发射到收集的颗粒，从而约束放电 基本上直接在阴极和阳极之间发生。 通过这种布置，溅射的微粒被抑制进入激光器的谐振腔并粘附到其光学器件上。 因此，激光器的有用使用寿命增加。

公开(公告)号：US4410273A

公开(公告)日：1983-10-18

申请号：US242139

申请日：1981-03-09

申请人： Arlan W. Mantz ,  David L. Wall ,  Dudley M. Chapman ,  Richard S. Eng ,  Kenneth W. Nill

发明人： Arlan W. Mantz ,  David L. Wall ,  Dudley M. Chapman ,  Richard S. Eng ,  Kenneth W. Nill

IPC分类号： G01N21/39 ,  G01J3/42

CPC分类号： G01J3/4338 ,  G01J3/02 ,  G01J3/0286 ,  G01N21/39

摘要： A scanning spectrometer incorporating a scanning diode laser powered with a controllable injection current. The injection current control may be set at predetermined discrete levels. These levels may be varied in accordance with signals derived from a servo loop, and may have superimposed upon them a cyclically varying substantially constant amplitude current. The laser output is directed via a beam splitter to both sample and reference cells. The material in the reference cell is so selected as to provide absorption features at each of the desired frequencies. The cyclically varying current is provided with an amplitude sufficient to cause a frequency amplitude at least as great as the maximum breadth of each of these spectral features of interest. The preselected bias currents are selected so as to provide lasing action of the diode at or near each of the selected frequencies. A phase-locked amplifier tuned to the frequency of the cyclically varying current senses the position of the scanned laser output relative to that of the associated absorption feature and provides an error signal to adjust the bias current so as to center the cyclically scanned laser frequency on the selected absorption feature.

摘要翻译： 包含用可控注入电流​​供电的扫描二极管激光器的扫描光谱仪。 喷射电流控制可以设定在预定的离散水平。 这些电平可以根据从伺服环路导出的信号而变化，并且可以在它们上叠加循环变化的基本上恒定的振幅电流。 激光输出通过分束器引导到样品和参比细胞。 参考单元中的材料被选择为在每个期望频率处提供吸收特征。 循环变化的电流具有足以使频率振幅至少与感兴趣的这些光谱特征中的每一个的最大宽度一样大的幅度。 选择预选的偏置电流，以便在每个所选择的频率处或附近提供二极管的激光作用。 调整到循环变化电流频率的锁相放大器相对于相关吸收特征的扫描激光输出的位置感测扫描的激光输出的位置，并且提供误差信号以调整偏置电流，以便将循环扫描的激光频率居中 所选吸收特征。