公开(公告)号：US06763046B2

公开(公告)日：2004-07-13

申请号：US10029008

申请日：2001-12-20

申请人： James N. Baillargeon ,  Wen-Yen Hwang ,  Klaus Alexander Anselm ,  Chih-Hsiang Lin

发明人： James N. Baillargeon ,  Wen-Yen Hwang ,  Klaus Alexander Anselm ,  Chih-Hsiang Lin

IPC分类号： H01S510

CPC分类号： H01S3/1303 ,  H01S3/131 ,  H01S3/1392 ,  H01S5/0687

摘要： A monitored laser system includes a laser with a first mirror and an exit mirror. The laser also has a laser cavity defined at least in part by the first mirror and the exit mirror. Within the laser cavity is an active region that contains material that is capable of stimulated emission at one or more wavelengths such that laser light is emitted from the laser. A power source is coupled to the active region. A multiple reflectivity band reflector (MRBR) is coupled to at least a portion of the emitted laser light. The MRBR has at least first and second wavelength bands with reflectivity above a particular reflectivity separated by at least a third wavelength band having reflectivity below the particular reflectivity. A first photodiode is coupled to at least a portion of the filtered laser light and produces an output based on the amount and wavelength of light received. A means for adjusting the emitted wavelength of the laser toward a particular wavelength in one of the at least first, second, and third wavelength bands based at least in part on the output of the first photodiode.

摘要翻译： 被监视的激光系统包括具有第一反射镜和出射镜的激光器。 激光器还具有至少部分地由第一反射镜和出射镜限定的激光腔。 在激光腔内是包含能够在一个或多个波长处被激发的材料的激活区域，使得激光从激光器发射。 电源耦合到有源区。 多反射带反射器（MRBR）耦合到所发射的激光的至少一部分。 MRBR具有至少第一和第二波长带，其具有高于具有低于特定反射率的反射率的至少第三波长带隔开的特定反射率的反射率。 第一光电二极管被耦合到滤波的激光的至少一部分，并且基于所接收的光的量和波长产生输出。 用于至少部分地基于第一光电二极管的输出，将至少第一，第二和第三波长带中的一个波长的激光发射波长调整到特定波长的装置。

公开(公告)号：US06697413B2

公开(公告)日：2004-02-24

申请号：US10000672

申请日：2001-10-31

申请人： Wen-Yen Hwang ,  Chih-Hsiang Lin ,  Jun Zheng ,  James N. Baillargeon

发明人： Wen-Yen Hwang ,  Chih-Hsiang Lin ,  Jun Zheng ,  James N. Baillargeon

IPC分类号： H01S5187

CPC分类号： H01S5/18341 ,  H01S5/021 ,  H01S5/0215 ,  H01S5/06206 ,  H01S5/18302 ,  H01S5/18369 ,  H01S5/3095

摘要： An embodiment of a surface-emitting laser structure includes a first semiconductor region of a first conductivity type coupled to a first contact and a second semiconductor region of the same conductivity type coupled to a second contact. A third semiconductor region of the opposite conductivity type is coupled to a third contact and interposed between the first and second semiconductor regions. An active region is interposed between the first and third regions. In a further embodiment, the laser structure may include a variable refractive index structure interposed between the second and third semiconductor regions. In another embodiment, a surface-emitting laser structure may include an active region between a first semiconductor region of a first conductivity type coupled to a first contact, and a second As semiconductor region of opposite conductivity type coupled to a second contact. A third electrical contact is dielectrically spaced from the second semiconductor region.

摘要翻译： 表面发射激光器结构的实施例包括耦合到第一触点的第一导电类型的第一半导体区域和与第二触点耦合的相同导电类型的第二半导体区域。 具有相反导电类型的第三半导体区域耦合到第三接触并插入在第一和第二半导体区域之间。 有源区域介于第一和第三区域之间。 在另一实施例中，激光器结构可以包括插入在第二和第三半导体区域之间的可变折射率结构。 在另一个实施例中，表面发射激光器结构可以包括耦合到第一触点的第一导电类型的第一半导体区域和耦合到第二触点的相反导电类型的第二As半导体区域之间的有源区。 第三电接触件与第二半导体区域介电地间隔开。

公开(公告)号：US06501539B2

公开(公告)日：2002-12-31

申请号：US09810906

申请日：2001-03-15

申请人： Pie-Yau Chien ,  Te-Wei Liu ,  Jui-Feng Huang ,  Chih-Wei Hung ,  Chih-Hsiang Lin ,  Hua-Tang Liu

发明人： Pie-Yau Chien ,  Te-Wei Liu ,  Jui-Feng Huang ,  Chih-Wei Hung ,  Chih-Hsiang Lin ,  Hua-Tang Liu

IPC分类号： G01C308

CPC分类号： G01S17/10 ,  G01S7/484 ,  G01S7/486 ,  G01S7/4868 ,  G01S7/497 ,  G01S7/499 ,  G01S7/51

摘要： A high precision laser range finder comprises an APC loop for eliminating a timing jitter problem due to different reflections on a target. The APC loop comprises a laser receiver, a peak holding circuit, an integrator and a high voltage generator. The peak holding circuit is connected with the laser receiver for detecting a signal strength outputted from the laser receiver. The high voltage generator provides the laser driver and laser receiver with voltage so as to control the strength of the emitted laser pulse signal of the laser driver and the gain of the avalanche photo-detector. The integrator is used to eliminate the steady error in the APC loop. Furthermore, a time to amplitude converting circuit comprises an AJD converter for obtaining a distance data and then filtering in a microprocessor to increase the measurement accuracy.

摘要翻译： 高精度激光测距仪包括APC回路，用于消除由于目标上的不同反射引起的定时抖动问题。 APC环路包括激光接收器，峰值保持电路，积分器和高电压发生器。 峰值保持电路与激光接收器连接，用于检测从激光接收器输出的信号强度。 高压发生器为激光驱动器和激光接收器提供电压，以控制激光驱动器发射的激光脉冲信号的强度和雪崩光电检测器的增益。 积分器用于消除APC回路中的稳定误差。 此外，时间到幅度转换电路包括用于获得距离数据的AJD转换器，然后在微处理器中进行滤波以提高测量精度。

公开(公告)号：US06498226B2

公开(公告)日：2002-12-24

申请号：US09848525

申请日：2001-05-03

申请人： Kung-Lung Cheng ,  Shu-Chen Lin ,  Wen-Ling Lui ,  Chih-Hsiang Lin ,  Wei-Ling Lin ,  Woan-Shiow Tzeng

发明人： Kung-Lung Cheng ,  Shu-Chen Lin ,  Wen-Ling Lui ,  Chih-Hsiang Lin ,  Wei-Ling Lin ,  Woan-Shiow Tzeng

IPC分类号： C08G7310

CPC分类号： C08G73/10 ,  G02F1/133723 ,  G03F7/037 ,  G03F7/0387

摘要： This invention provides cycloaliphatic polyimide having the following formula (I): wherein 1 and n are integers from 4 to 7; m is an integer from 0 to 2; p is an integer from 1 to 8; polycyclic aliphatic compound R reprents C1-8 cycloalkyl, cycloalkenyl, cycloalkynyl, norbornenyl, decalinyl, adamantanyl, or cubanyl. That cycloaliphatic polyimide can be a through transparent film, their thermal stability is over 430° C. and dielectric constant is about 2.7.

摘要翻译： 本发明提供具有下式（I）的脂环族聚酰亚胺：其中1和n为4-7的整数; m为0〜2的整数; p是1至8的整数; 多环脂肪族化合物R排斥C 1-8环烷基，环烯基，环炔基，降冰片烯基，十氢化萘基，金刚烷基或十六烷基。 该脂环族聚酰亚胺可以是透明膜，它们的热稳定性高于430℃，介电常数约为2.7。