公开(公告)号：US06792008B2

公开(公告)日：2004-09-14

申请号：US09915184

申请日：2001-07-24

申请人： Edmund L. Wolak ,  Tae J. Kim ,  Harrison Ransom ,  Jo Major ,  Robert Lang

发明人： Edmund L. Wolak ,  Tae J. Kim ,  Harrison Ransom ,  Jo Major ,  Robert Lang

IPC分类号： H01S3067

CPC分类号： G02B6/4203 ,  G02B6/02052 ,  G02B6/262 ,  G02B6/4207 ,  G02B6/4238 ,  H01S3/094053 ,  H01S5/02252 ,  H01S5/0656 ,  H01S5/06817 ,  H01S5/0683 ,  H01S5/147

摘要： A laser package comprises a laser diode source having a first Fabry-Perot cavity between a highly reflective back facet and low reflective front facet for providing a first light output for an optical application. A light monitor is positioned adjacent to the back facet and aligned to receive a second light output from the laser diode back facet. A pigtail fiber having a lensed fiber input end is positioned from the laser diode front facet to form an optical coupling region and is aligned relative to the lasing cavity to receive the first light output into the fiber, the light output exiting the package for coupling to the application. A portion of the first light output from the lasing cavity is reflected off the lensed fiber input end with a portion directed back into the lasing cavity and another portion reflected off of the laser diode front facet. The front facet forms with the lensed fiber input end a second Fabry-Perot cavity generating light which is periodically in and out of phase with the light generated in the first Fabry-Perot cavity due to changes in the length of the second Fabry-Perot cavity caused by package ambient temperature changes so that a tracking error is generated in a signal developed by the light monitor. Thus, this invention provides several ways to suppress the formation of the second Fabry-Perot cavity.

摘要翻译： 激光器封装包括激光二极管源，其具有在高反射后面和低反射前面之间的第一法布里 - 珀罗腔，用于为光学应用提供第一光输出。 光监控器定位成与后面相邻并对准以接收来自激光二极管背面的第二光输出。 具有透镜光纤输入端的辫状光纤从激光二极管前刻面定位，以形成光耦合区域，并且相对于激光腔对准，以将第一光输出接收到光纤中，光输出离开封装以耦合到 应用程序。 从激光腔输出的第一光的一部分从透镜光纤输入端反射，其中一部分指向激光腔，另一部分从激光二极管前端面反射出去。 前透镜与透镜光纤输入端形成第二法布里 - 珀罗腔，其产生光，其由于第二法布里 - 珀罗腔的长度变化而周期性地与第一法布里 - 珀罗腔中产生的光异相和不同相 由封装环境温度变化引起的，从而在由光监测器开发的信号中产生跟踪误差。 因此，本发明提供了几种抑制第二法布里 - 珀罗腔形成的方法。

公开(公告)号：US5936991A

公开(公告)日：1999-08-10

申请号：US718056

申请日：1996-09-17

申请人： Robert J. Lang ,  David A. Mehuys ,  Steve O'Brien ,  Jo Major

发明人： Robert J. Lang ,  David A. Mehuys ,  Steve O'Brien ,  Jo Major

IPC分类号： H01S3/23 ,  H01S5/026 ,  H01S5/10 ,  H01S5/20 ,  H01S5/40 ,  H01S5/50 ,  H01S3/19 ,  H01S3/00

CPC分类号： H01S5/50 ,  H01S5/026 ,  H01S5/20 ,  H01S5/1064 ,  H01S5/4006

摘要： Conventional master oscillator power amplifier (MOPA) devices have experienced poor beam quality due to edge effects. The lateral current tailoring described herein was one attempt at improving the laser beam quality. Experimental results have indicated that this approach can make improvement in beam quality, using nonlinear leading edges in the gain stripe of MOPA amplifiers.

摘要翻译： 传统的主振荡器功率放大器（MOPA）器件由于边缘效应而经历了差的光束质量。 本文所述的横向电流剪裁是提高激光束质量的一个尝试。 实验结果表明，该方法可以在MOPA放大器的增益条带中使用非线性前沿来改善光束质量。