公开(公告)号：US06320894B1

公开(公告)日：2001-11-20

申请号：US09252610

申请日：1999-02-04

申请人： Frank E. Hanson ,  Peter M. Poirier

发明人： Frank E. Hanson ,  Peter M. Poirier

IPC分类号： H01S308

CPC分类号： H01S3/115 ,  H01S3/08027 ,  H01S3/08036

摘要： A Q-switched neodymium laser may be operated in the 0.9 &mgr;m [( &lgr;1)] band at relatively high gain levels. The laser uses a birefringent filter which provides selective discrimination for wavelengths near 1 &mgr;m [(&lgr;2)] and prevents parasitic lasing in that wavelength region. The filter includes a specific wavelength dependent crystal quartz wave plate in combination with a linear polarizer. The linear polarizer is placed between two mirrors which define a laser cavity. The wave plate provides exactly 2 full waves of retardation at the desired wavelength &lgr;1 in the 0.9 &mgr;m band, and exactly 1.75 waves of retardation at wavelength &lgr;2 near the center of the 1 &mgr;m band for one pass. A Q-switching device such as a Pockels cell is positioned in the laser cavity to selectively control a pulsed emission at &lgr;1.

摘要翻译： Q开关钕激光器可以在0.9mum [（lambd1）]频带中以相对较高的增益水平运行。 激光器使用双折射滤光器，其提供对于1um（lambd2）附近的波长的选择性鉴别，并且防止该波长区域中的寄生激光。 滤波器包括与线性偏振器组合的特定波长依赖晶体石英波片。 线性偏振器被放置在限定激光腔的两个反射镜之间。 波片在0.9mum波段中在期望的波长lambd1处提供正好2个全波延迟，并且在1次波段的中心附近的波长lambd2处的正好1.75个延迟波。 诸如Pockels单元的Q开关器件位于激光腔中，以选择性地控制lambd1处的脉冲发射。

公开(公告)号：USH1673H

公开(公告)日：1997-08-05

申请号：US581699

申请日：1995-12-29

申请人： Frank E. Hanson

发明人： Frank E. Hanson

IPC分类号： H01S3/042 ,  H01S3/0941 ,  H01S3/04

CPC分类号： H01S3/09415 ,  H01S3/042

摘要： A solid state laser comprises a composite solid state laser gain element, The gain element comprises a undoped section and a doped section having a concentration of dopant ions for absorbing pumping radiation. The doped section is diffusion bonded to the undoped section to form an active region in the gain element, A cooling jacket conducts flowing coolant around the circumference of a portion of the gain element surrounding the active region.

摘要翻译： 固态激光器包括复合固体激光增益元件。增益元件包括未掺杂部分和具有用于吸收泵浦辐射的掺杂离子浓度的掺杂部分。 掺杂部分扩散接合到未掺杂部分以在增益元件中形成有源区.A冷却套管围绕有源区域的增益元件的一部分的圆周导流流动的冷却剂。