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1. 再颁专利

USRE35215E Frequency converted laser diode and lens system therefor 失效
标题翻译：变频激光二极管及其透镜系统
公开(公告)号：USRE35215E
公开(公告)日：1996-04-23
申请号：US307174
申请日：1994-09-16
申请人： Robert G. Waarts , David F. Welch , Donald R. Scifres , Robert J. Lang , Derek W. Nam
发明人： Robert G. Waarts , David F. Welch , Donald R. Scifres , Robert J. Lang , Derek W. Nam
IPC分类号： G02F1/37 , H01S3/00 , H01S5/00 , H01S5/026 , H01S5/0625 , H01S5/10 , H01S5/12 , H01S5/14 , H01S5/187 , H01S5/40 , H01S5/50 , H01S3/08 , H01S3/10
CPC分类号： H01S5/50 , G02F1/37 , H01S5/0265 , H01S5/005 , H01S5/0092 , H01S5/026 , H01S5/06256 , H01S5/1064 , H01S5/1215 , H01S5/141 , H01S5/187 , H01S5/4025 , H01S5/4031 , H01S5/4068 , H01S5/4087
摘要： A compact semiconductor laser light source providing short wavelength (ultraviolet, blue or green) coherent light by means of frequency doubling of red or infrared light from a high power diode heterostructure. The high power diode heterostructure is a MOPA device having a single mode laser oscillator followed by a multimode, preferably flared, optical power amplifier. A tunable configuration having an external rear reflector grating could also be used. A lens could be integrated with the MOPA to laterally collimate the light before it is emitted. Straight or curved, surface emitting gratings could also be incorporated. An astigmatism-correcting lens system having at least one cylindrical lens surface is disposed in the path of the output from the MOPA to provide a beam with substantially equal lateral and transverse beam width dimensions and beam divergence angles. A nonlinear optical crystal or waveguide is placed in the path of the astigmatism-free symmetrized beam to double the frequency of the light. Single pass or multipass configurations with reflectors could be used, as well as external resonator and segmented, periodically poled waveguide configurations.
摘要翻译：一种紧凑的半导体激光光源，通过从高功率二极管异质结构的红色或红外光的倍频提供短波长（紫外线，蓝色或绿色）相干光。高功率二极管异质结构是具有单模激光振荡器的MOPA器件，其后是多模，优选为扩展的光功率放大器。也可以使用具有外部后反射器光栅的可调构造。透镜可以与MOPA集成，以在发射光之前对光进行横向准直。还可以结合直的或弯曲的表面发射光栅。具有至少一个柱面透镜表面的散光校正透镜系统设置在来自MOPA的输出的路径中，以提供具有基本相等的横向和横向波束宽度尺寸和光束发散角的光束。将非线性光学晶体或波导放置在无散光对称光束的路径中，将光的频率加倍。可以使用具有反射器的单通或多通道配置，以及外部谐振器和分段的周期性极化波导配置。

2. 发明授权

US5321718A Frequency converted laser diode and lens system therefor 失效
标题翻译：变频激光二极管及其透镜系统
公开(公告)号：US5321718A
公开(公告)日：1994-06-14
申请号：US10279
申请日：1993-01-28
申请人： Robert G. Waarts , David F. Welch , Donald R. Scifres , Robert J. Lang , Derek W. Nam
发明人： Robert G. Waarts , David F. Welch , Donald R. Scifres , Robert J. Lang , Derek W. Nam
IPC分类号： G02F1/37 , H01S3/00 , H01S5/00 , H01S5/026 , H01S5/0625 , H01S5/10 , H01S5/12 , H01S5/14 , H01S5/187 , H01S5/40 , H01S5/50 , H01S3/08 , H01S3/10
CPC分类号： H01S5/50 , G02F1/37 , H01S5/0265 , H01S5/005 , H01S5/0092 , H01S5/026 , H01S5/06256 , H01S5/1064 , H01S5/1215 , H01S5/141 , H01S5/187 , H01S5/4025 , H01S5/4031 , H01S5/4068 , H01S5/4087
摘要： A compact semiconductor laser light source providing short wavelength (ultraviolet, blue or green) coherent light by means of frequency doubling of red or infrared light from a high power diode heterostructure. The high power diode heterostructure is a MOPA device having a single mode laser oscillator followed by a multimode, preferably flared, optical power amplifier. A tunable configuration having an external rear reflector grating could also be used. A lens could be integrated with the MOPA to laterally collimate the light before it is emitted. Straight or curved, surface emitting gratings could also be incorporated. An astigmatism-correcting lens system having at least one cylindrical lens surface is disposed in the path of the output from the MOPA to provide a beam with substantially equal lateral and transverse beam width dimensions and beam divergence angles. A nonlinear optical crystal or waveguide is placed in the path of the astigmatism-free symmetrized beam to double the frequency of the light. Single pass or multipass configurations with reflectors could be used, as well as external resonator and segmented, periodically poled waveguide configurations.
摘要翻译：一种紧凑的半导体激光光源，通过从高功率二极管异质结构的红色或红外光的倍频提供短波长（紫外线，蓝色或绿色）相干光。高功率二极管异质结构是具有单模激光振荡器的MOPA器件，其后是多模，优选为扩展的光功率放大器。也可以使用具有外部后反射器光栅的可调构造。透镜可以与MOPA集成，以在发射光之前对光进行横向准直。还可以结合直的或弯曲的表面发射光栅。具有至少一个柱面透镜表面的散光校正透镜系统设置在来自MOPA的输出的路径中，以提供具有基本相等的横向和横向波束宽度尺寸和光束发散角的光束。将非线性光学晶体或波导放置在无散光对称光束的路径中，将光的频率加倍。可以使用具有反射器的单通或多通道配置，以及外部谐振器和分段的周期性极化波导配置。

3. 发明授权

US6021141A Tunable blue laser diode 失效
标题翻译：可调蓝色激光二极管
公开(公告)号：US6021141A
公开(公告)日：2000-02-01
申请号：US808737
申请日：1997-02-28
申请人： Derek W. Nam , David F. Welch , Robert G. Waarts , Jo S. Major
发明人： Derek W. Nam , David F. Welch , Robert G. Waarts , Jo S. Major
IPC分类号： H01S5/02 , H01S3/10
CPC分类号： H01S5/02
摘要： A harmonic generator laser system which features a distributed Bragg reflector (DBR) or distributed feedback (DFB) tunable diode laser coupled to a quasi-phase matched (QPM) waveguide of optically nonlinear material. Tuning of the DBR laser may be achieved either thermally or via current injection, or both, halving the wavelength of a red laser into the visible blue spectral band. Thermal tuning may provide a coarse tuning adjustment, while injected current may provide fine tuning accessible to a user. Separately or in combination with current tuning, a modulation signal may be applied to the DBR laser for achieving an intensity modulated or a pulsed output. In another embodiment, modulation may be achieved by frequency modulation of the laser. A very compact tunable blue laser is formed. In yet another embodiment a double clad fiber amplifier is disposed between the tunable laser and the waveguide. The fiber amplifier is pumped by a high power laser, while the core guides light to be frequency doubled in the nonlinear material from a continuously tunable laser.
摘要翻译：一种谐波发生器激光系统，其特征在于耦合到光学非线性材料的准相位匹配（QPM）波导的分布式布拉格反射器（DBR）或分布式反馈（DFB）可调谐二极管激光器。 DBR激光器的调谐可以通过热或通过电流注入或二者实现，将红色激光器的波长减半成可见蓝色光谱带。热调谐可以提供粗调谐调节，而注入的电流可以提供用户可访问的微调。单独地或结合当前调谐，调制信号可以被施加到DBR激光器以实现强度调制或脉冲输出。在另一个实施例中，可以通过激光器的频率调制实现调制。形成非常紧凑的可调谐蓝色激光。在又一实施例中，双包层光纤放大器设置在可调激光器和波导之间。光纤放大器由大功率激光器泵浦，核心引导来自连续可调激光器的非线性材料中的频率倍增的光。

4. 发明授权

US5644584A Tunable blue laser diode 失效
标题翻译：可调蓝色激光二极管
公开(公告)号：US5644584A
公开(公告)日：1997-07-01
申请号：US625781
申请日：1996-03-29
申请人： Derek W. Nam , David F. Welch , Robert G. Waarts , Jo S. Major
发明人： Derek W. Nam , David F. Welch , Robert G. Waarts , Jo S. Major
IPC分类号： G02F1/37 , G02F1/35 , G02F1/377 , H01S3/067 , H01S5/00 , H01S5/022 , H01S5/024 , H01S5/06 , H01S5/0687 , H01S5/12 , H01S5/125 , H01S3/10
CPC分类号： H01S5/02415 , H01S5/02248 , H01S5/0687 , G02F1/377 , G02F2001/3548 , H01S3/0092 , H01S3/06754 , H01S3/09415 , H01S3/2375 , H01S5/0092 , H01S5/02446 , H01S5/0612 , H01S5/06256 , H01S5/4087
摘要： A harmonic generator laser system which features a distributed Bragg reflector (DBR) or distributed feedback (DFB) tunable diode laser coupled to a quasi-phasematched (QPM) waveguide of optically nonlinear material. Tuning of the DBR laser may be achieved either thermally or via current injection, or both, halving the wavelength of a red laser into the visible blue spectral band. Thermal tuning may provide a coarse tuning adjustment, while injected current may provide fine tuning accessible to a user. Separately or in combination with current tuning, a modulation signal may be applied to the DBR laser for achieving an intensity modulated or a pulsed output. In another embodiment, modulation may be achieved by frequency modulation of the laser. A very compact tunable blue laser is formed. In yet another embodiment a double clad fiber amplifier is disposed between the tunable laser and the waveguide. The fiber amplifier is pumped by a high power laser, while the core guides light to be frequency doubled in the nonlinear material from a continuously tunable laser.
摘要翻译：一种谐波发生器激光系统，其特征在于耦合到光学非线性材料的准相位（QPM）波导的分布式布拉格反射器（DBR）或分布式反馈（DFB）可调谐二极管激光器。 DBR激光器的调谐可以通过热或通过电流注入或二者实现，将红色激光器的波长减半成可见蓝色光谱带。热调谐可以提供粗调谐调节，而注入的电流可以提供用户可访问的微调。单独地或结合当前调谐，调制信号可以被施加到DBR激光器以实现强度调制或脉冲输出。在另一个实施例中，可以通过激光器的频率调制实现调制。形成非常紧凑的可调谐蓝色激光。在又一实施例中，双包层光纤放大器设置在可调激光器和波导之间。光纤放大器由大功率激光器泵浦，核心引导来自连续可调激光器的非线性材料中的频率倍增的光。

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