公开(公告)号：WO2012166758A1

公开(公告)日：2012-12-06

申请号：PCT/US2012/039919

申请日：2012-05-30

Applicant: CORNING INCORPORATED ,  BHATIA, Vikram ,  COBB, Joshua M

Inventor： BHATIA, Vikram ,  COBB, Joshua M

IPC: H01S5/40 ,  G02B27/14 ,  G02B27/09 ,  H01S3/094 ,  H01S3/00

CPC classification number: H01S5/4012 ,  G02B6/4204 ,  G02B6/4215 ,  G02B19/0028 ,  G02B19/0047 ,  G02B27/1006 ,  G02B27/141 ,  H01S3/094053 ,  H01S3/09408 ,  H01S3/09415 ,  H01S5/0078

Abstract: An apparatus for providing pump light (50) of a first wavelength λ1 to a laser (32) that emits a second wavelength λ2 has first and second lasers (12a, b) of the wavelength λΐ to direct light along first and second axes (A,B) in a first direction. The first and second axes define a first plane PI. To form a composite light beam (50) of wavelength λ1, a filter apparatus (40) has a first filter (Fl) on a first surface (36) at an oblique angle to the first and second axes (A,B) and that transmits λΐ and reflects λ2. A second filter (F2) on a second surface (54) parallel to the first surface (36), reflects λΐ and transmits λ2. A third filter (F3) formed on the first surface (36) coplanar with the first filter (Fl) reflects λΐ and transmits λ2. The filter apparatus (40) re-aligns the first and second axes (A,B) along a second plane P2, orthogonal to P 1 and parallel to the first direction and prevents feedback from the pumped laser (32) to the first and second lasers (12a, b).

Abstract translation: 用于向发射第二波长λ2的激光器（32）提供第一波长λ1的泵浦光（50）的装置具有波长λ1的第一和第二激光器（12a，b） 以沿第一方向和第二轴线（A，B）引导光线。 第一和第二轴定义第一平面PI。 为了形成波长λ1的复合光束（50），过滤装置（40）在第一表面（36）上具有与第一和第二轴线（A，B）成倾斜角的第一过滤器（F1）和 传送？ 并反映？2。 在与第一表面（36）平行的第二表面（54）上的第二过滤器（F2） 并发送α2。 形成在与第一过滤器（F1）共面的第一表面（36）上的第三过滤器（F3） 并发送α2。 过滤装置（40）沿着与P 1正交并平行于第一方向的第二平面P2重新对准第一和第二轴线（A，B），并且防止来自泵浦激光器（32）的反馈到第一和第二 激光器（12a，b）。

公开(公告)号：WO2010054280A1

公开(公告)日：2010-05-14

申请号：PCT/US2009/063672

申请日：2009-11-09

Applicant: CORNING INCORPORATED ,  KONICA MINOLTA OPTO INC. ,  BHATIA, Vikram ,  GREGORSKI, Steven J ,  NAGAI, Fumio ,  OZEKI, Yukihiro

Inventor： BHATIA, Vikram ,  GREGORSKI, Steven J ,  NAGAI, Fumio ,  OZEKI, Yukihiro

IPC: G02B6/42

CPC classification number: G02B6/4204 ,  G02B6/4225 ,  G02B6/4227 ,  G02F1/3775 ,  H01S5/0092

Abstract: Methods of optimizing optical alignment in an optical package are provided. In one embodiment, the optical package includes a laser diode, a wavelength conversion device, coupling optics positioned along an optical path extending from the laser diode to the wavelength conversion device, and one or more adaptive actuators. The method involves adjusting the optical alignment of the wavelength conversion device in a non-adaptive degree of freedom by referring to a thermally-dependent output intensity profile of the laser diode and a thermally-dependent coupling efficiency profile of the optical package. The adjustment in the non-adaptive degree of freedom is quantified such that, over a given operating temperature range of the optical package, portions of the coupling efficiency profile characterized by relatively low coupling efficiency offset portions of the output intensity profile characterized by relatively high laser output intensity and portions of the coupling efficiency profile characterized by relatively high coupling efficiency offset portions of the output intensity profile characterized by relatively low laser output intensity. Additional embodiments are disclosed and claimed.

Abstract translation: 提供了优化光学封装中的光学对准的方法。 在一个实施例中，光学封装包括激光二极管，波长转换装置，沿着从激光二极管延伸到波长转换装置的光路定位的耦合光学器件，以及一个或多个自适应致动器。 该方法包括通过参考激光二极管的热依赖输出强度分布和光学封装的热依赖耦合效率分布来调整波长转换器件在非自适应自由度中的光学对准。 量化非自适应自由度的调节，使得在光学封装的给定工作温度范围内，耦合效率分布的部分以相对较低的耦合效率为特征，输出强度分布的偏移部分表现为相对较高的激光 输出强度和耦合效率分布的部分以由输出强度分布相对较高的耦合效率偏移部分表征，其特征在于相对低的激​​光输出强度。 公开并要求保护附加实施例。

公开(公告)号：WO2009017636A3

公开(公告)日：2009-03-19

申请号：PCT/US2008008942

申请日：2008-07-23

Applicant: CORNING INC ,  BHATIA VIKRAM

Inventor： BHATIA VIKRAM

IPC: G02F1/35 ,  G02B6/42 ,  H01S5/00

CPC classification number: G02F1/3501 ,  G02B6/422 ,  G02F1/37 ,  G02F2001/3503 ,  H04N9/3129

Abstract: Methods of controlling semiconductor lasers (10) are provided where the semiconductor laser generates an output beam that is directed towards the input face of a wavelength conversion device (20). Particular aspects of the present invention relate to alignment and/or intentional misalignment of a beam spot (15) of an output beam on an input face of a wavelength conversion device (20). Additional embodiments are disclosed and claimed.

Abstract translation: 提供了控制半导体激光器（10）的方法，其中半导体激光器产生朝向波长转换装置（20）的输入面的输出光束。 本发明的特定方面涉及在波长转换装置（20）的输入面上的输出光束的光束点（15）的对准和/或有意的未对准。 公开并要求保护附加实施例。

公开(公告)号：WO2008048475A2

公开(公告)日：2008-04-24

申请号：PCT/US2007/021773

申请日：2007-10-11

Applicant: CORNING INCORPORATED ,  BHATIA, Vikram ,  GOLLIER, Jacques ,  HU, Martin, H ,  LOEBER, David, A ,  RICKETTS, Daniel, O ,  ZAH, Chung-en

Inventor： BHATIA, Vikram ,  GOLLIER, Jacques ,  HU, Martin, H ,  LOEBER, David, A ,  RICKETTS, Daniel, O ,  ZAH, Chung-en

IPC: H01S5/068 ,  H01S5/042

CPC classification number: H04N9/3129

Abstract: The present invention relates generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling wavelength in semiconductor lasers. According to one embodiment of the present invention, a method of minimizing laser wavelength variations in a semiconductor laser is provided. According to the method, one or more of the laser drive currents is configured to comprise a drive portion and a wavelength recovery portion. The wavelength recovery portion of the drive current comprises a recovery amplitude IR that is distinct from the drive amplitude ID and a recovery duration t R that is less than the drive duration to. The recovery amplitude I R and duration t R are sufficient to recover carrier density distribution distorted by gain compression effects prior to recovery. Additional embodiments are disclosed and claimed.

Abstract translation: 本发明一般涉及半导体激光器和激光扫描系统，更具体地，涉及用于控制半导体激光器中的波长的方案。 根据本发明的一个实施例，提供了一种使半导体激光器中的激光波长变化最小化的方法。 根据该方法，一个或多个激光驱动电流被配置为包括驱动部分和波长恢复部分。 驱动电流的波长恢复部分包括与驱动振幅ID不同的恢复幅度IR和小于驱动持续时间的恢复持续时间t R S。 恢复振幅I R和持续时间t R N足以恢复在恢复之前由增益压缩效应失真的载流子密度分布。 公开并要求保护附加实施例。

公开(公告)号：WO2008033251A1

公开(公告)日：2008-03-20

申请号：PCT/US2007/019447

申请日：2007-09-06

Applicant: CORNING INCORPORATED ,  BHATIA, Vikram ,  HU, Martin H ,  LIU, Xingsheng ,  LOEBER, David A ,  RICKETTS, Daniel O ,  ZAH, Chung-En

Inventor： BHATIA, Vikram ,  HU, Martin H ,  LIU, Xingsheng ,  LOEBER, David A ,  RICKETTS, Daniel O ,  ZAH, Chung-En

IPC: H01S5/026 ,  H01S5/06 ,  H01S5/0625 ,  H01S5/024 ,  H01S5/042 ,  H01S5/062 ,  H01S5/22 ,  H01S5/223 ,  G02F1/377

CPC classification number: H01S5/0261 ,  H01S5/024 ,  H01S5/0425 ,  H01S5/0612 ,  H01S5/06213 ,  H01S5/06251 ,  H01S5/06256 ,  H01S5/22 ,  H01S5/2231

Abstract: 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. According to one embodiment of the present invention, a method of compensating for thermally induced patterning effects, e.g. wavelength drift, in a semiconductor laser is provided where the laser's heating element driving current I H is set to a relatively high magnitude when the laser's driving current I D is at a relatively low magnitude. The heating element driving current I H decreases from said relatively high magnitude to said relatively low magnitude at a time Δt prior to an increase in said laser driving current I D from said relatively low magnitude to said relatively high magnitude. The semiconductor laser may be a DBR laser diode comprising a wavelength selective region (12), a phase matching region (14), and a gain region (16), each region provided with a pair of heating element strips (62,64).

Abstract translation: 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。 根据本发明的一个实施例，一种补偿热诱导图案化效应的方法，例如， 提供了在半导体激光器中，当激光器的驱动电流I SUB相对于激光器的加热元件驱动电流I H H被设定为相对高的幅度时， 低幅度 在所述激光器驱动电流I SUB从所述激光器驱动电流I SUB增加之前的时间Δt，加热元件驱动电流I H H从所述相对高的幅度减小到所述相对低的幅度 相对较低的幅度到相对较高的幅度。 半导体激光器可以是包括波长选择区域（12），相位匹配区域（14）和增益区域（16）的DBR激光二极管，每个区域设置有一对加热元件条（62,64）。

公开(公告)号：WO2014018305A1

公开(公告)日：2014-01-30

申请号：PCT/US2013/050620

申请日：2013-07-16

Applicant: CORNING INCORPORATED ,  BHATIA, Vikram ,  CROSSLAND, Carl Edgar ,  DEWA, Paul Gerard ,  GENIER, Michael Lucien

Inventor： BHATIA, Vikram ,  CROSSLAND, Carl Edgar ,  DEWA, Paul Gerard ,  GENIER, Michael Lucien

IPC: G01J3/02 ,  G01J3/04 ,  G01J3/28 ,  G01J3/36 ,  G01J3/08

CPC classification number: G01J3/021 ,  G01J3/0294 ,  G01J3/04 ,  G01J3/08 ,  G01J3/2823 ,  G01J3/36

Abstract: A hyperspectral imaging system and method are described herein for providing a hyperspectral image of an area of a remote object (e.g., scene of interest). The hyperspectral imaging system includes at least one optic, a scannable slit mechanism, a spectrometer, a two-dimensional image sensor, and a controller. The scannable slit mechanism can be a micro-electromechanical system spatial light modulator (MEMS SLM), a diffractive Micro-Opto-Electro-Mechanical Systems (MOEMS) spatial light modulator (SLM), a digital light processing (DLP) system, a liquid crystal display, a rotating drum with at least one slit formed therein, or a rotating disk with at least one slit formed therein.

Abstract translation: 本文描述了一种用于提供远程对象（例如，感兴趣的场景）的区域的高光谱图像的高光谱成像系统和方法。 高光谱成像系统包括至少一个光学元件，可扫描狭缝机构，光谱仪，二维图像传感器和控制器。 可扫描狭缝机构可以是微机电系统空间光调制器（MEMS SLM），衍射微光电机械系统（MOEMS）空间光调制器（SLM），数字光处理（DLP）系统，液体 晶体显示器，其中形成有至少一个狭缝的旋转滚筒或其中形成有至少一个狭缝的旋转盘。

公开(公告)号：WO2010141555A2

公开(公告)日：2010-12-09

申请号：PCT/US2010/037030

申请日：2010-06-02

Applicant: CORNING INCORPORATED ,  BHATIA, Vikram ,  PIKULA, Dragan ,  RAJ, Madhan M

Inventor： BHATIA, Vikram ,  PIKULA, Dragan ,  RAJ, Madhan M

IPC: H01S3/10 ,  H01S3/13

CPC classification number: H01S5/0683 ,  G02F1/3775 ,  H01S5/0617 ,  H01S5/06256 ,  H01S5/0687 ,  H01S5/141

Abstract: A method for operating a frequency converted light source includes sweeping a wavelength control signal of a semiconductor laser over an initial signal range and measuring an optical power of an output beam emitted from a wavelength conversion device coupled to the semiconductor laser. The wavelength control signal of the semiconductor laser may then be swept over at least one truncated signal range and the optical power of the resulting output beam is measured. The at least one truncated signal range may be centered on a point corresponding to a maximum power of the output beam of the sweep of the wavelength control signal over the preceding signal range. An operational signal range for the wavelength control signal is determined such that a midpoint of the operational signal range corresponds to the maximum optical power of the resulting output beam of the sweep over the preceding signal range. Closed-loop feedback control of the wavelength control signal in the operational signal range may then be initiated.

Abstract translation: 一种用于操作频率转换的光源的方法包括在初始信号范围上扫描半导体激光器的波长控制信号，并测量从耦合到半导体激光器的波长转换器件发射的输出光束的光功率。 然后可以将半导体激光器的波长控制信号扫过至少一个截断的信号范围，并测量所得到的输出光束的光功率。 所述至少一个截断的信号范围可以在对应于在先前信号范围上的波长控制信号的扫描的输出波束的最大功率的点上居中。 确定用于波长控制信号的操作信号范围，使得操作信号范围的中点对应于在先前信号范围上的扫描的结果输出光束的最大光功率。 然后可以启动操作信号范围内的波长控制信号的闭环反馈控制。

公开(公告)号：WO2010048285A1

公开(公告)日：2010-04-29

申请号：PCT/US2009/061481

申请日：2009-10-21

Applicant: CORNING INCORPORATED ,  BHATIA, Vikram ,  GOLLIER, Jacques ,  PIKULA, Dragan ,  RICKETTS, Daniel O

Inventor： BHATIA, Vikram ,  GOLLIER, Jacques ,  PIKULA, Dragan ,  RICKETTS, Daniel O

IPC: H01S3/00

CPC classification number: H01S5/06256 ,  H01S5/0092 ,  H01S5/06837 ,  H01S5/0687 ,  H04N9/3129 ,  H04N9/3188

Abstract: The present disclosure relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present disclosure, a method of operating a laser projection system is provided. According to the method, the laser projection system is utilized to display a sequence of pixelized image frames comprising an alternating sequence of relatively high intensity active projection periods Mod ON and relatively low intensity inactive projection periods Mod OFF . A complementary control signal transitions between an active state Q ON during the relatively high intensity active projection periods Mod ON and an inactive state Q OFF during the relatively low intensity inactive projection periods Mod OFF . The transition of the complementary control signal from the inactive state Q OFF to the active state Q ON is conditioned to anticipate initiation of relatively high intensity active projection periods ModON such that it is optimized upon initiation of the relatively high intensity active projection periods Mod ON . Additional embodiments are disclosed and claimed.

Abstract translation: 本公开一般涉及半导体激光器和激光投影系统。 根据本公开的一个实施例，提供了一种操作激光投影系统的方法。 根据该方法，激光投影系统用于显示包括相对高强度的活动投影周期ModON和相对低强度非活动投影周期ModOFF的交替序列的像素化图像帧序列。 互补控制信号在相对高强度的有效投影周期ModON期间的活动状态QON和在相对低强度的非活动投影周期ModOFF期间的无效状态QOFF之间转变。 补充控制信号从无效状态QOFF到活动状态QON的转变被调节以预期开始相对高强度的有效投影周期ModON，使得在相对高强度的活动投影周期ModON的开始时被优化。 公开并要求保护附加实施例。

公开(公告)号：WO2009014662A1

公开(公告)日：2009-01-29

申请号：PCT/US2008/008829

申请日：2008-07-18

Applicant: CORNING INCORPORATED ,  ALMORIC, Etienne ,  BHATIA, Vikram ,  GOLLIER, Jacques ,  PIKULA, Dragan ,  RICKETTS, Daniel O

Inventor： ALMORIC, Etienne ,  BHATIA, Vikram ,  GOLLIER, Jacques ,  PIKULA, Dragan ,  RICKETTS, Daniel O

IPC: H01S5/06

CPC classification number: H01S5/0622 ,  G02F1/377 ,  G02F2001/3546 ,  H01S5/0687

Abstract: Methods of controlling semiconductor lasers are provided where the semiconductor laser generates a wavelength-modulated output beam λ MOD that is directed towards the input face of a wavelength conversion device. The intensity of a wavelength-converted output λ CONV of the device is monitored as the output beam of the laser is modulated and as the position of the modulated output beam λ MOD on the input face of the wavelength conversion device is varied. A maximum value of the monitored intensity is correlated with optimum coordinates representing the position of the modulated output beam λ MOD on the input face of the wavelength conversion device. The optical package is operated in the data projection mode by directing an intensity-modulated laser beam from the semiconductor laser to the wavelength conversion device using the optimum positional coordinates. Additional embodiments are disclosed and claimed. Laser controllers and projections systems are also provided.

Abstract translation: 提供了控制半导体激光器的方法，其中半导体激光器产生朝向波长转换装置的输入面的波长调制输出光束ΔMOD。 当激光器的输出光束被调制并且随着波长转换装置的输入面上的调制输出光束Δmod的位置变化时，监视器件的波长转换输出αCONV的强度。 监视强度的最大值与表示波长转换装置的输入面上的调制输出光束Δmod的位置的最佳坐标相关。 通过使用最佳位置坐标将来自半导体激光器的强度调制激光束引导到波长转换装置，以数据投影模式操作光学封装。 公开并要求保护附加实施例。 还提供激光控制器和投影系统。

公开(公告)号：WO2008048474A1

公开(公告)日：2008-04-24

申请号：PCT/US2007/021772

申请日：2007-10-11

Applicant: CORNING INCORPORATED ,  BHATIA, Vikram ,  GOLLIER, Jacques ,  HU, Martin, H. ,  LOEBER, David, A. ,  RICKETTS, Daniel, O. ,  ZAH, Chung-En

Inventor： BHATIA, Vikram ,  GOLLIER, Jacques ,  HU, Martin, H. ,  LOEBER, David, A. ,  RICKETTS, Daniel, O. ,  ZAH, Chung-En

IPC: H04N9/31 ,  H01S5/0625

CPC classification number: H01S5/06256 ,  H01S5/0092 ,  H01S5/06246 ,  H01S5/06832 ,  H01S5/0687 ,  H04N9/3129

Abstract: Particular embodiments of the present invention relate generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser is configured for optical emission of encoded data. At least one parameter of the optical emission is a function of a drive current I GAIN injected into the gain section (16) of the semiconductor laser (10) and one or more additional drive currents I PHASE , I DBR. Mode selection in the semiconductor laser is altered by perturbing at least one of the additional drive currents I PHASE , I DBR witn a perturbation signal I PTRB to alter mode selection in the semiconductor laser (10) such that a plurality of different emission modes are selected in the semiconductor laser (10) over a target emission period. In this manner, patterned variations in the wavelength or intensity profile of the laser can be disrupted to disguise patterned flaws that would otherwise be readily noticeable in the output of the laser.

Abstract translation: 本发明的具体实施方案一般涉及半导体激光器和激光扫描系统，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，激光器被配置用于光发射编码数据。 光发射的至少一个参数是注入到半导体激光器（10）的增益部分（16）中的驱动电流I增益的函数，以及一个或多个附加驱动电流I SUB PHASE ，我DBR。 半导体激光器中的模式选择通过扰动扰动信号I PTRB中的至少一个附加驱动电流I SUB，DB DB， 以改变半导体激光器（10）中的模式选择，使得在目标发射周期中在半导体激光器（10）中选择多个不同的发射模式。 以这种方式，可以破坏激光器的波长或强度分布的图案变化来伪装图案化的缺陷，否则在激光器的输出中将容易看出。