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1. 发明申请

US20110205619A1 Wavelength Conversion Device With Microlens And Optical Package Incorporating The Same 有权
标题翻译：具有微透镜和光学封装的波长转换器件结合在一起
公开(公告)号：US20110205619A1
公开(公告)日：2011-08-25
申请号：US12709719
申请日：2010-02-22
申请人： Douglas Llewellyn Butler , Martin Hai Hu , Anping Liu
发明人： Douglas Llewellyn Butler , Martin Hai Hu , Anping Liu
IPC分类号： G02F1/365
CPC分类号： G02B6/262 , G02B6/4206 , G02F1/3558 , G02F1/365 , G02F1/377 , H01S3/108 , H01S3/109 , H01S5/02268 , H01S5/125 , H01S5/14
摘要： An optical package is provided comprising a laser diode and a wavelength conversion device. The laser diode and the wavelength conversion device define an external laser cavity and the wavelength conversion device is tilted relative to the output face of the laser diode to define a tilt angle φ that is less than approximately 85°. The input face of the wavelength conversion device comprises a pair of tapered facets and a microlens. The pair of tapered facets and the microlens are defined on the input face such that they share respective portions of the facial waveguide region on the input face, with the tapered facets occupying peripheral portions of the facial waveguide region on the input face and the microlens occupying an interior portion of the facial waveguide region on the input face. Each of the pair of tapered facets define a facet angle α within the facial waveguide region that is less than the facet angle α and is greater than approximately 45°. Additional embodiments are disclosed and claimed.
摘要翻译：提供了包括激光二极管和波长转换装置的光学封装。激光二极管和波长转换装置限定外部激光腔，并且波长转换装置相对于激光二极管的输出面倾斜以限定倾斜角度＆phgr; 小于约85°。波长转换装置的输入面包括一对锥形面和微透镜。一对锥形面和微透镜被限定在输入面上，使得它们共享输入面上的面波导区域的相应部分，锥形面占据输入面上的面波导区域的周边部分，微透镜占据输入面上的面波导区域的内部部分。所述一对锥形面中的每一个在所述面波导区域内限定小于所述小平面角α并且大于大约45°的小平面角α。公开并要求保护附加实施例。

2. 发明申请

US20110044359A1 Intracavity Conversion Utilizing Narrow Band Reflective SOA 审中-公开
标题翻译：利用窄带反射SOA进行腔内转换
公开(公告)号：US20110044359A1
公开(公告)日：2011-02-24
申请号：US12543123
申请日：2009-08-18
申请人： Douglas Llewellyn Butler , Martin Hai Hu , Anping Liu
发明人： Douglas Llewellyn Butler , Martin Hai Hu , Anping Liu
IPC分类号： H01S3/10 , H01S5/187
CPC分类号： H01S5/14 , H01S3/109 , H01S5/0612 , H01S5/06256
摘要： An external cavity laser source is provided comprising an external laser cavity, a tunable distributed Bragg reflector (DBR), a DBR tuning element, an output reflector, a semiconductor optical amplifier (SOA), a frequency-selective optical coupler/reflector, and a wavelength conversion device. The tunable DBR, the DBR tuning element, the SOA, and the output reflector are configured to generate a fundamental laser signal characterized by a fundamental bandwidth that is narrower than the QPM bandwidth of the wavelength conversion device and can be tuned to a fundamental center wavelength within the QPM bandwidth. The frequency-selective optical coupler/reflector is configured for substantially non-reflective two-way transmission of optical signals at the fundamental center wavelength and is further configured for substantially complete reflection of wavelength-converted optical signals generated by the wavelength conversion device. The output reflector is configured for substantially non-reflective transmission of wavelength-converted optical signals generated by the wavelength conversion device and for substantially complete reflection of optical signals at the fundamental center wavelength. Additional embodiments are disclosed and claimed.
摘要翻译：提供了外腔激光源，其包括外部激光腔，可调分布布拉格反射器（DBR），DBR调谐元件，输出反射器，半导体光放大器（SOA），频率选择性光耦合器/反射器波长转换装置。可调谐DBR，DBR调谐元件，SOA和输出反射器被配置为产生基本激光信号，该基本激光信号的特征在于比波长转换器件的QPM带宽窄的基本带宽，并且可以调谐到基本中心波长在QPM带宽内。频率选择性光耦合器/反射器被配置为用于在基本中心波长处的光信号的基本上非反射双向传输，并且还被配置为用于基本上完全反射由波长转换装置产生的波长转换的光信号。输出反射器被配置为用于由波长转换器件产生的波长转换的光信号的基本上不反射的透射，并且用于基本中心波长处的光信号的基本上完全的反射。公开并要求保护附加实施例。

3. 发明授权

US08111452B2 Wavelength conversion device with microlens and optical package incorporating the same 有权
标题翻译：具有微透镜的波长转换装置和包含其的光学封装
公开(公告)号：US08111452B2
公开(公告)日：2012-02-07
申请号：US12709719
申请日：2010-02-22
申请人： Douglas Llewellyn Butler , Martin Hai Hu , Anping Liu
发明人： Douglas Llewellyn Butler , Martin Hai Hu , Anping Liu
IPC分类号： G02F2/02 , H01S3/10
CPC分类号： G02B6/262 , G02B6/4206 , G02F1/3558 , G02F1/365 , G02F1/377 , H01S3/108 , H01S3/109 , H01S5/02268 , H01S5/125 , H01S5/14
摘要： An optical package is provided comprising a laser diode and a wavelength conversion device. The laser diode and the wavelength conversion device define an external laser cavity and the wavelength conversion device is tilted relative to the output face of the laser diode to define a tilt angle φ that is less than approximately 85°. The input face of the wavelength conversion device comprises a pair of tapered facets and a microlens. The pair of tapered facets and the microlens are defined on the input face such that they share respective portions of the facial waveguide region on the input face, with the tapered facets occupying peripheral portions of the facial waveguide region on the input face and the microlens occupying an interior portion of the facial waveguide region on the input face. Each of the pair of tapered facets define a facet angle α within the facial waveguide region that is less than the facet angle α and is greater than approximately 45°. Additional embodiments are disclosed and claimed.
摘要翻译：提供了包括激光二极管和波长转换装置的光学封装。激光二极管和波长转换装置限定外部激光腔，并且波长转换装置相对于激光二极管的输出面倾斜以限定倾斜角度＆phgr; 小于约85°。波长转换装置的输入面包括一对锥形面和微透镜。一对锥形面和微透镜被限定在输入面上，使得它们共享输入面上的面波导区域的相应部分，锥形面占据输入面上的面波导区域的周边部分，微透镜占据输入面上的面波导区域的内部部分。所述一对锥形面中的每一个在所述面波导区域内限定小于所述小平面角α并且大于大约45°的小平面角α。公开并要求保护附加实施例。

4. 发明申请

US20090252187A1 Minimizing Power Variations In Laser Sources 审中-公开
标题翻译：最小化激光源的功率变化
公开(公告)号：US20090252187A1
公开(公告)日：2009-10-08
申请号：US12333967
申请日：2008-12-12
申请人： Anthony Sebastian Bauco , Douglas Llewellyn Butler , Martin Hai Hu , Dragan Pikula , Daniel Ohen Ricketts
发明人： Anthony Sebastian Bauco , Douglas Llewellyn Butler , Martin Hai Hu , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/13
CPC分类号： H01S5/06255 , H01S5/0092 , H01S5/06256 , H01S5/06835 , H01S5/0687 , H04N9/3129 , H04N9/3161
摘要： The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a projected laser image is generated utilizing an output beam of the semiconductor laser. A gain current control signal is generated by a laser feedback loop to control the gain section of the semiconductor laser. Wavelength fluctuations of the semiconductor laser are narrowed by incorporating a wavelength recovery operation in a drive current of the semiconductor laser and by initiating the wavelength recovery operations as a function of the gain current control signal or an optical intensity error signal. Additional embodiments are disclosed and claimed.
摘要翻译：本发明一般涉及半导体激光器和激光投射系统。根据本发明的一个实施例，利用半导体激光器的输出光束产生投射的激光图像。增益电流控制信号由激光反馈回路产生，以控制半导体激光器的增益部分。通过在半导体激光器的驱动电流中并入波长恢复操作并且通过作为增益电流控制信号或光强度误差信号的函数启动波长恢复操作来使半导体激光器的波长波动变窄。公开并要求保护附加实施例。

5. 发明申请

US20100322272A1 Minimizing power variations in laser sources 审中-公开
标题翻译：最大限度地减少激光源的功率变化
公开(公告)号：US20100322272A1
公开(公告)日：2010-12-23
申请号：US12080852
申请日：2008-04-07
申请人： Martin Hai Hu , David August Sniezek Loeber , Dragan Pikula , Daniel Ohen Ricketts
发明人： Martin Hai Hu , David August Sniezek Loeber , Dragan Pikula , Daniel Ohen Ricketts
IPC分类号： H01S3/13 , H01S5/12
CPC分类号： H01S5/06256 , H01S5/005 , H01S5/0092 , H01S5/0604 , H01S5/06251 , H01S5/0687 , H04N9/3129 , H04N9/3155
摘要： The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a projected laser image is generated utilizing an output beam of the semiconductor laser. A gain current control signal is generated by a gain current feedback loop to control the gain section of the semiconductor laser. Wavelength fluctuations of the semiconductor laser are narrowed by incorporating a wavelength recovery operation in a drive current of the semiconductor laser and by initiating the wavelength recovery operations as a function of the gain current control signal or an optical intensity error signal. Additional embodiments are disclosed and claimed.
摘要翻译：本发明一般涉及半导体激光器和激光投射系统。根据本发明的一个实施例，利用半导体激光器的输出光束产生投射的激光图像。增益电流控制信号由增益电流反馈回路产生，以控制半导体激光器的增益部分。通过在半导体激光器的驱动电流中并入波长恢复操作并且通过作为增益电流控制信号或光强度误差信号的函数启动波长恢复操作来使半导体激光器的波长波动变窄。公开并要求保护附加实施例。

6. 发明申请

US20090086775A1 Laser source with interdigital heater electrodes and underlying current confinement layer 有权
公开(公告)号：US20090086775A1
公开(公告)日：2009-04-02
申请号：US11906213
申请日：2007-10-01
申请人： Martin Hai Hu , Chung-En Zah
发明人： Martin Hai Hu , Chung-En Zah
IPC分类号： H01S3/10
CPC分类号： H01S5/06256 , H01S5/005 , H01S5/0092 , H01S5/0425 , H01S5/0612 , H01S5/0687
摘要： A semiconductor laser source is provided wherein the wavelength selective section of the laser diode comprises a P+ type current confinement layer and first and second sets of interdigital heater electrodes formed over the current confinement layer. Individual electrode digits of the first and second sets of interdigital heater electrodes alternate in succession along a direction of optical propagation defined by the active waveguide layer of the laser diode. The first set of interdigital heater electrodes are positively or negatively biased relative to the laser diode cathode and relative to the second set of interdigital heater electrodes such that the relative bias is either less than the forward bias turn-on voltage of the P-N junction or has an absolute value less than the reverse break-down voltage of the P-N junction.

7. 发明申请

US20080075132A1 Thermal compensation in semiconductor lasers 失效
标题翻译：半导体激光器的热补偿
公开(公告)号：US20080075132A1
公开(公告)日：2008-03-27
申请号：US11526988
申请日：2006-09-26
申请人： Martin Hai Hu , Daniel Ohen Ricketts , Chung-En Zah
发明人： Martin Hai Hu , Daniel Ohen Ricketts , Chung-En Zah
IPC分类号： H01S3/04
CPC分类号： H01S5/06804 , H01S5/0612 , H01S5/06256
摘要： The present invention relates to relates generally to semiconductor lasers and, more particularly, to schemes for measuring and controlling the temperature of semiconductor lasers and schemes for wavelength stabilization of semiconductor lasers. According to one embodiment of the present invention, a method of driving a temperature control mechanism in a semiconductor laser is provided. According to the method, signals representing an operating temperature of the semiconductor laser and ambient temperature are generated and a target laser operating temperature that is a function of the ambient temperature signal is established. A temperature control mechanism of the semiconductor laser is then driven to increase a degree of correlation between the operating temperature signal and the target laser operating temperature. Additional embodiments are disclosed and claimed.
摘要翻译：本发明一般涉及半导体激光器，更具体地，涉及用于测量和控制半导体激光器的温度和半导体激光器的波长稳定化方案的方案。根据本发明的一个实施例，提供了一种驱动半导体激光器中的温度控制机构的方法。根据该方法，产生表示半导体激光器的工作温度和环境温度的信号，建立作为环境温度信号的函数的目标激光器工作温度。然后驱动半导体激光器的温度控制机构以增加工作温度信号和目标激光器工作温度之间的相关程度。公开并要求保护附加实施例。

8. 发明申请

US20080063016A1 Thermal compensation in semiconductor lasers 审中-公开
标题翻译：半导体激光器的热补偿
公开(公告)号：US20080063016A1
公开(公告)日：2008-03-13
申请号：US11520223
申请日：2006-09-13
申请人： Vikram Bhatia , Martin Hai Hu , Xingsheng Liu , David August Sniezek Loeber , Daniel Ohen Ricketts , Chung-En Zah
发明人： Vikram Bhatia , Martin Hai Hu , Xingsheng Liu , David August Sniezek Loeber , Daniel Ohen Ricketts , Chung-En Zah
IPC分类号： H01S3/04
CPC分类号： H01S5/0261 , H01S5/024 , H01S5/0425 , H01S5/0612 , H01S5/06213 , H01S5/06251 , H01S5/06256 , H01S5/22 , H01S5/2231
摘要： The present invention relates to methods for modulating a semiconductor laser and wavelength matching to a wavelength converter using monolithic micro-heaters integrated in the semiconductor laser. The present invention also relates to wavelength matching and stabilization in laser sources in general, without regard to whether the laser is modulated or whether second harmonic generation is utilized in the laser source. According to one embodiment of the present invention, a method of compensating for thermally induced patterning effects in a semiconductor laser is provided where the laser's heating element driving current IH is set to a relatively high magnitude when the laser's driving current ID is at a relatively low magnitude. Additional embodiments are disclosed and claimed.
摘要翻译：本发明涉及使用集成在半导体激光器中的单块微型加热器来调制半导体激光器和波长转换器的波长匹配的方法。本发明通常也涉及激光源中的波长匹配和稳定化，而不考虑激光是否被调制，或者是否在激光源中使用二次谐波产生。根据本发明的一个实施例，提供了一种补偿半导体激光器中的热诱导图案化效应的方法，其中激光器的加热元件驱动电流I H H被设置为相对高的幅度，驱动电流I SUB D具有相对低的幅度。公开并要求保护附加实施例。

9. 发明授权

US08391330B2 Fracture resistant metallization pattern for semiconductor lasers 有权
标题翻译：半导体激光器的抗破裂金属化图案
公开(公告)号：US08391330B2
公开(公告)日：2013-03-05
申请号：US12426563
申请日：2009-04-20
申请人： Satish Chandra Chaparala , Martin Hai Hu , Lawrence Charles Hughes, Jr. , Chung-En Zah
发明人： Satish Chandra Chaparala , Martin Hai Hu , Lawrence Charles Hughes, Jr. , Chung-En Zah
IPC分类号： H01S3/097
CPC分类号： H01S5/0425 , H01S5/0092 , H01S5/06256
摘要： Metallization patterns are provided to reduce the probability of chip fracture in semiconductor lasers. According to one embodiment disclosed herein, the pad edges of a metallization pattern extend across a plurality of crystallographic planes in the laser substrate. In this manner, cracks initiated at any given stress concentration would need to propagate across many crystallographic planes in the substrate to reach a significant size. Additional embodiments of the present disclosure relate to the respective geometries and orientations of adjacent pairs of contact pads. Still further embodiments are disclosed and claimed.
摘要翻译：提供金属化模式以减少半导体激光器中芯片断裂的可能性。根据本文公开的一个实施例，金属化图案的焊盘边缘延伸穿过激光基板中的多个结晶平面。以这种方式，在任何给定的应力集中开始的裂纹将需要传播到衬底中的许多结晶平面以达到显着的尺寸。本公开的另外的实施例涉及相邻的接触垫对的各自的几何形状和取向。公开和要求保护的另外的实施例。

10. 发明授权

US08103468B2 Methods and devices for evaluating the operating characteristics of a DBR laser diode 有权
标题翻译：用于评估DBR激光二极管的工作特性的方法和装置
公开(公告)号：US08103468B2
公开(公告)日：2012-01-24
申请号：US12414940
申请日：2009-03-31
申请人： Martin Hai Hu , Hong Ky Nguyen , Paul Willard Smith
发明人： Martin Hai Hu , Hong Ky Nguyen , Paul Willard Smith
IPC分类号： G06F11/26 , G02F1/00
CPC分类号： H01S5/0014 , H01S5/0021 , H01S5/06256
摘要： In accordance with one embodiment of the present disclosure, a method of evaluating the operating characteristics of a Distributed Bragg Reflector (DBR) laser diode is provided. According to the method, a diagnostic electrical current is injected into the wavelength tuning section of the DBR laser to generate amplified spontaneous emission of light in the wavelength tuning section. Light emitted from the wavelength tuning section is absorbed by the gain section and photo current generated by the light absorbed in the gain section is measured. The photo current measured in the gain section can be correlated with an evaluation of the operating characteristics of the DBR laser diode. For example, the measured photo current can be correlated with a substandard operating characteristic when it departs from a given photo current metric by more than an acceptable amount. Additional embodiments are disclosed and claimed.
摘要翻译：根据本公开的一个实施例，提供了一种评估分布式布拉格反射器（DBR）激光二极管的工作特性的方法。根据该方法，将诊断电流注入到DBR激光器的波长调谐部分中，以在波长调谐部分中产生放大的自发发射光。从波长调谐部发出的光被增益部吸收，并且测量由增益部吸收的光产生的光电流。在增益部分中测量的光电流可以与DBR激光二极管的工作特性的评估相关联。例如，当测量的光电流离开给定的光电流量度超过可接受的量时，测量的光电流可以与不合标准的工作特性相关。公开并要求保护附加实施例。

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