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1. 发明申请

WO2011133357A2 LASER DIODES COMPRISING QWI OUTPUT WINDOW AND WAVEGUIDE AREAS AND METHODS OF MANUFACTURE 审中-公开
标题翻译：包括QWI输出窗口和波导区域的激光二极管及其制造方法
公开(公告)号：WO2011133357A2
公开(公告)日：2011-10-27
申请号：PCT/US2011/032048
申请日：2011-04-12
申请人： CORNING INCORPORATED , CHANG, Chwan-Yang , CHEN, Chien-Chih , HU, Martin, H. , NGUYEN, Hong, Ky , ZAH, Chung-En
发明人： CHANG, Chwan-Yang , CHEN, Chien-Chih , HU, Martin, H. , NGUYEN, Hong, Ky , ZAH, Chung-En
IPC分类号： B01J19/00 , B01L3/00 , F16L19/02
CPC分类号： B01J19/0093 , B01J2219/0081 , B01L3/502715 , B01L3/563 , B01L3/569 , B01L2200/027
摘要： In accordance with one embodiment of the present disclosure, a process of manufacturing a semiconductor laser diode comprising a gain section, a QWI output window, and QWI waveguide areas is provided. The QWI waveguide areas are fabricated using quantum well intermixing and define a QWI waveguide portion in the QWI output window of the laser diode. The QWI output window is transparent to the lasing wavelength λ L . The QWI waveguide portion in the QWI output window is characterized by an energy bandgap that is larger than an energy bandgap of the gain section such that the band gap wavelength λ QWI in the QWI waveguide portion and the QWI output window is shorter than the lasing wavelength λ L . The QWI output window is characterized by a photoluminescent wavelength λ PL . The manufacturing process comprises a λ PL screening protocol that determines laser diode reliability based on a comparison of the lasing wavelength and the photoluminescent wavelength λ L of the QWI output window. Additional embodiments are disclosed and claimed.
摘要翻译：根据本公开的一个实施例，提供了制造包括增益部分，QWI输出窗口和QWI波导区域的半导体激光二极管的工艺。使用量子阱混合制造QWI波导区域，并在激光二极管的QWI输出窗口中定义QWI波导部分。 QWI输出窗口对于激光波长λL是透明的。 QWI输出窗口中的QWI波导部分的特征在于能量带隙大于增益部分的能带隙，使得QWI波导部分和QWI输出窗口中的带隙波长λQWI比激光波长短 ·L。 QWI输出窗口的特征在于光致发光波长λPL。该制造工艺包括基于QWI输出窗口的激光波长和光致发光波长λL的比较来确定激光二极管可靠性的λPL筛选方案。公开并要求保护附加实施例。

2. 发明申请

WO2010117667A3 METHODS AND DEVICES FOR EVALUATING THE OPERATING CHARACTERISTICS OF A DBR LASER DIODE 审中-公开
标题翻译：用于评估DBR激光二极管的操作特性的方法和装置
公开(公告)号：WO2010117667A3
公开(公告)日：2011-01-27
申请号：PCT/US2010028769
申请日：2010-03-26
申请人： CORNING INC , HU MARTIN H , NGUYEN HONG K , SMITH PAUL W
发明人： HU MARTIN H , NGUYEN HONG K , SMITH PAUL W
IPC分类号： H01S5/00
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 DBR laser diode is provided. According to the method, a diagnostic electrical current (II)is injected into the wavelength tuning section of the DBR laser to generate amplified spontaneous emission (ASE) of light in the wavelength tuning section. Light emitted from the wavelength tuning section is absorbed by the gain section and photo current (ISAIN) generated by the light absorbed in the gain section is measured. The photo current (ISAIN) 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 (ISAIN) can be correlated with a substandard operating characteristic when it departs from a given photo current metric by more than an acceptable amount. Alternatively, the measured photo current (ISAIN) can be correlated with a certified operating characteristic when it departs from the given photo current metric by 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DBR激光二极管的工作特性的方法。根据该方法，将诊断电流（II）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光（ASE）。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（ISAIN）。在增益部分中测量的光电流（ISAIN）可以与对DBR激光二极管的工作特性的评估相关。例如，当测量的光电流（ISAIN）从给定的光电流度量偏离超过可接受的量时，其可以与不合标准的工作特性相关。或者，当其测量的光电流（ISAIN）当其从给定的光电流度量偏离可接受的量时，可以与经认证的操作特性相关联。公开并要求保护附加实施例。

3. 发明申请

WO2010048353A3 CORRECTION OF POWER VARIATIONS IN LASER SOURCES 审中-公开
标题翻译：激光源功率变化的修正
公开(公告)号：WO2010048353A3
公开(公告)日：2010-07-29
申请号：PCT/US2009061571
申请日：2009-10-22
申请人： CORNING INC , GOLLIER JACQUES , HU MARTIN H , LOEBER DAVID A , PIKULA DRAGAN , RICKETTS DANIEL O
发明人： GOLLIER JACQUES , HU MARTIN H , LOEBER DAVID A , PIKULA DRAGAN , RICKETTS DANIEL O
IPC分类号： H01S5/06
CPC分类号： H01S5/06832 , H01S5/0092 , H01S5/06256 , H04N9/3129
摘要： The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a method of correcting output power variations in a semiconductor laser is provided. According to the method, an output power feedback loop is utilized to generate optical intensity feedback signals representing actual output power of the laser source for discrete portions V1, Vi, Vj of the image signal. Error signals E1, Ei, Ej are generated representing the degree to which actual projected output power varies from a target projected output power for the discrete portions V1, Vi, Vj of the image signal. These error signals E1, Ei, Ej are utilized to apply corrected control signals G1', Gi', Gj' to the gain section of the semiconductor laser for projection of compatible discrete portions V1', Vi', Vj' of the image signal. According to another embodiment of the present invention, a system is provided for generating a projected laser image.
摘要翻译：本发明一般涉及半导体激光器和激光投影系统。根据本发明的一个实施例，提供了一种校正半导体激光器中的输出功率变化的方法。根据该方法，利用输出功率反馈回路产生代表图像信号的离散部分V1，Vi，Vj的激光源的实际输出功率的光强度反馈信号。产生表示实际投影输出功率相对于图像信号的离散部分V1，Vi，Vj的目标投影输出功率变化程度的误差信号E1，Ei，Ej。利用这些误差信号E1，Ei，Ej将校正的控制信号G1'，Gi'，Gj'施加到半导体激光器的增益部分，用于投影图像信号的兼容离散部分V1'，Vi'，Vj'。根据本发明的另一个实施例，提供了一种用于产生投影激光图像的系统。

4. 发明申请

WO2010002471A1 WAVELENGTH NORMALIZATION IN PHASE SECTION OF SEMICONDUCTOR LASERS 审中-公开
标题翻译：半导体激光器相位波长正规化
公开(公告)号：WO2010002471A1
公开(公告)日：2010-01-07
申请号：PCT/US2009/003937
申请日：2009-07-02
申请人： CORNING INCORPORATED , HU, Martin, H , PIKULA, Dragan , RICKETTS, Daniel, O
发明人： HU, Martin, H , PIKULA, Dragan , RICKETTS, Daniel, O
IPC分类号： H01S5/0625 , H04N9/31 , G02F1/37 , H01S5/062
CPC分类号： H01S5/06256 , G02F1/0147 , G02F1/03 , G02F1/37 , G02F2203/12 , G02F2203/50 , H01S5/0092 , H01S5/0612 , H01S5/06246 , H04N9/3129 , H04N9/3155
摘要： Particular embodiments of the present invention relate generally to semiconductor lasers and laser projections systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser having a gain section (16), a phase section (14) and a wavelength selective, section (12) is configured for optical emission of encoded data. The optical emission is shifted across a plurality of laser cavity modes by applying a quasi-periodic phase shifting signal I/V φ to the phase section (14) of the semiconductor laser. The amplitude of the quasi-periodic signal transactions periodically between a maximum drive level (A) and a minimum drive level (B) at a frequency that varies randomly over time.
摘要翻译：本发明的具体实施方案一般涉及半导体激光器和激光投射系统，更具体地，涉及用于控制半导体激光器的方案。根据本发明的一个实施例，具有增益部分（16），相位部分（14）和波长选择部分（12）的激光器被配置用于光发射编码数据。通过向半导体激光器的相位部分（14）施加准周期性移相信号I / V f，使光发射跨越多个激光腔模。准周期信号事件的周期性波动在最大驱动电平（A）和最小驱动电平（B）之间，频率随时间随机变化。

5. 发明申请

WO2009088446A1 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：WO2009088446A1
公开(公告)日：2009-07-16
申请号：PCT/US2008/013980
申请日：2008-12-22
申请人： CORNING INCORPORATED , HU, Martin H , LOEBER, David A , PIKULA, Dragan , RICKETTS, Daniel O
发明人： HU, Martin H , LOEBER, David A , PIKULA, Dragan , RICKETTS, Daniel O
IPC分类号： H01S5/0625 , H01S5/0687 , H04N9/31 , H01S5/06
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

WO2009045395A2 LASER SOURCE WITH INTERDIGITAL HEATER ELECTRODES AND UNDERLYING CURRENT CONFINEMENT LAYER 审中-公开
标题翻译：带有数字加热器电极的激光源和当前的限制层
公开(公告)号：WO2009045395A2
公开(公告)日：2009-04-09
申请号：PCT/US2008/011307
申请日：2008-09-30
申请人： CORNING INCORPORATED , HU, Martin H , ZAH, Chung-en
发明人： HU, Martin H , ZAH, Chung-en
IPC分类号： H01S5/0625
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.
摘要翻译：提供了一种半导体激光源，其中激光二极管的波长选择部分包括P +型电流限制层和形成在电流限制层上的第一组和第二组叉指式加热器电极。第一组和第二组交叉指状加热器电极的单独电极数字沿着由激光二极管的有源波导层限定的光学传播方向连续交替。第一组叉指式加热器电极相对于激光二极管阴极和相对于第二组交叉指状加热器电极被正或负偏置，使得相对偏置小于PN结的正向偏压接通电压或具有绝对值小于PN结的反向击穿电压。

7. 发明申请

WO2007067408A3 METHOD AND DEVICE FOR PERFORMING DBR LASER WAVELENGTH MODULATION FREE OF THERMAL EFFECT 审中-公开
标题翻译：用于执行无热影响的DBR激光波长调制的方法和装置
公开(公告)号：WO2007067408A3
公开(公告)日：2008-02-14
申请号：PCT/US2006045856
申请日：2006-12-01
申请人： CORNING INC , HU MARTIN H , NISHIYAMA NOBUHIKO
发明人： HU MARTIN H , NISHIYAMA NOBUHIKO
IPC分类号： H01S5/125 , H01S5/06
CPC分类号： H01S5/06256 , H01S5/0092 , H01S5/06253 , H04N9/3129
摘要： The present invention is directed to a method and system for providing a three-level current scheme to a semiconductor laser to control beam wavelength and laser temperature. A first current is received into a gain section of the semiconductor laser and at least one other current is received into a DBR and/or phase section of the semiconductor laser. This other current(s) is pulse-width modulated based upon a required temperature value. An output beam is generated by the semiconductor laser based upon the received first current and the received pulse-width modulated current(s).
摘要翻译：本发明涉及一种用于向半导体激光器提供三电平电流方案以控制光束波长和激光器温度的方法和系统。第一电流被接收到半导体激光器的增益部分中，并且至少一个其它电流被接收到半导体激光器的DBR和/或相位部分中。基于所需的温度值对其它电流进行脉冲宽度调制。基于所接收的第一电流和所接收的脉冲宽度调制电流，由半导体激光器产生输出光束。

8. 发明申请

WO2006060656A2 METHOD AND DEVICE FOR PERFORMING WAVELENGTH MODULATION WITH A DISTRIBUTED BRAGG REFLECTOR (DBR) LASER 审中-公开
标题翻译：用分布式反射镜（DBR）激光进行波长调制的方法和装置
公开(公告)号：WO2006060656A2
公开(公告)日：2006-06-08
申请号：PCT/US2005/043625
申请日：2005-11-30
申请人： CORNING INCORPORATED , ZAH, Chung-en , HU, Martin H
发明人： ZAH, Chung-en , HU, Martin H
IPC分类号： H01S3/10
CPC分类号： H01S5/06256 , H01S5/0092 , H01S5/06253 , H04N9/3129
摘要： The present invention is directed to a method and system for providing phase modulated current to a semiconductor laser to control beam wavelength. A first current is received into a gain portion of the semiconductor laser and a second current is received into a DBR portion of the semiconductor laser. The second current is phase modulated based upon a required intensity value. An output beam is generated by the semiconductor laser based upon the received first current and the received second current.
摘要翻译：本发明涉及一种用于向半导体激光器提供相位调制电流以控制波束波长的方法和系统。第一电流被接收到半导体激光器的增益部分中，并且第二电流被接收到半导体激光器的DBR部分中。第二电流根据所需的强度值进行相位调制。基于所接收的第一电流和所接收的第二电流，由半导体激光器产生输出光束。

9. 发明申请

WO2011022443A1 INTRACAVITY CONVERSION UTILIZING NARROW BAND REFLECTIVE SOA 审中-公开
标题翻译：使用窄带反射SOA的内部转换
公开(公告)号：WO2011022443A1
公开(公告)日：2011-02-24
申请号：PCT/US2010/045820
申请日：2010-08-18
申请人： CORNING INCORPORATED , BUTLER, Douglas, L. , HU, Martin, H. , LIU, Anping
发明人： BUTLER, Douglas, L. , HU, Martin, H. , LIU, Anping
IPC分类号： H01S5/0625 , H01S5/14 , H01S3/109 , H01S5/06
CPC分类号： H01S5/14 , H01S3/109 , H01S5/0612 , H01S5/06256
摘要： An external cavity laser source (10) is provided comprising an external laser cavity (10), a tunable distributed Bragg reflector (20, DBR), a DBR tuning element (22), an output reflector (30), a semiconductor optical amplifier (40, SOA), a frequency-selective optical coupler/reflector (50), and a wavelength conversion device (60). 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 (50) 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 (30) 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.
摘要翻译：提供一种外腔激光源（10），其包括外部激光腔（10），可调散布布拉格反射器（20DB），DBR调谐元件（22），输出反射器（30），半导体光放大器 40，SOA），频率选择性光耦合器/反射器（50）和波长转换装置（60）。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（50）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（30）被配置用于由波长转换装置产生的波长转换的光信号的基本上不反射的传输，并且基本上完全反射基本中心波长处的光信号。

10. 发明申请

WO2010117667A2 METHODS AND DEVICES FOR EVALUATING THE OPERATING CHARACTERISTICS OF A DBR LASER DIODE 审中-公开
标题翻译：用于评估DBR激光二极管的操作特性的方法和装置
公开(公告)号：WO2010117667A2
公开(公告)日：2010-10-14
申请号：PCT/US2010/028769
申请日：2010-03-26
申请人： CORNING INCORPORATED , HU, Martin H , NGUYEN, Hong K , SMITH, Paul W
发明人： HU, Martin H , NGUYEN, Hong K , SMITH, Paul W
IPC分类号： H01S5/00
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 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. Alternatively, the measured photo current can be correlated with a certified operating characteristic when it departs from the given photo current metric by 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。或者，当测量的光电流从给定的光电流度量偏离可接受的量时，可以将其与经认证的操作特性相关联。公开并要求保护附加实施例。

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