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1. 发明申请

US20170064265A1 LASER DRIVING CIRCUIT, LASER DRIVING METHOD, AND DEVICE USING LASER LIGHT 审中-公开
标题翻译：激光驱动电路，激光驱动方法和使用激光的器件
公开(公告)号：US20170064265A1
公开(公告)日：2017-03-02
申请号：US15348587
申请日：2016-11-10
申请人： Sony Corporation
发明人： Motoi Kimura , Tsutomu Kurihara
IPC分类号： H04N9/31 , H01S5/40 , H01S5/042 , G02B27/48 , H01S5/062
CPC分类号： H04N9/3135 , G02B27/48 , G09G3/02 , G09G2320/0233 , H01S5/0427 , H01S5/06213 , H01S5/06216 , H01S5/0652 , H01S5/4093 , H01S2301/02 , H04N5/74 , H04N9/3129 , H04N9/3161 , H04N9/3179
摘要： A laser driving circuit, a laser driving method, and a device using laser light that can reduce speckle noise caused by laser light as coherent light are provided.In the laser driving circuit that generates laser driving current for driving a plurality of laser light sources emitting laser light of different wavelengths on the basis of an input video signal, a high-frequency signal of a frequency exceeding the band of the video signal is superimposed on the laser driving current generated on the basis of the input video signal, whereby speckle noise caused by the laser light as coherent light is reduced.
摘要翻译：在基于输入视频信号产生用于驱动发射不同波长的激光的多个激光源的激光驱动电流的激光驱动电路中，叠加超过视频信号的频带的频率的高频信号基于输入视频信号产生的激光器驱动电流，由此减少由激光引起的斑点噪声作为相干光。

2. 发明授权

US09516258B2 Laser driving circuit, laser driving method, and device using laser light 有权
标题翻译：激光驱动电路，激光驱动方法和使用激光的装置
公开(公告)号：US09516258B2
公开(公告)日：2016-12-06
申请号：US14349592
申请日：2012-10-04
申请人： Sony Corporation
发明人： Motoi Kimura , Tsutomu Kurihara
IPC分类号： H01S3/00 , H04N5/74 , G02B27/48 , H04N9/31 , H01S5/065 , G09G3/02 , H01S5/042 , H01S5/40 , H01S5/062
CPC分类号： H04N9/3135 , G02B27/48 , G09G3/02 , G09G2320/0233 , H01S5/0427 , H01S5/06213 , H01S5/06216 , H01S5/0652 , H01S5/4093 , H01S2301/02 , H04N5/74 , H04N9/3129 , H04N9/3161 , H04N9/3179
摘要： A laser driving circuit, a laser driving method, and a device using laser light that can reduce speckle noise caused by laser light as coherent light are provided. In the laser driving circuit that generates laser driving current for driving a plurality of laser light sources emitting laser light of different wavelengths on the basis of an input video signal, a high-frequency signal of a frequency exceeding the band of the video signal is superimposed on the laser driving current generated on the basis of the input video signal, whereby speckle noise caused by the laser light as coherent light is reduced.
摘要翻译：提供激光驱动电路，激光驱动方法和使用可以减少由激光引起的斑点噪声作为相干光的激光的装置。在基于输入视频信号产生用于驱动发射不同波长的激光的多个激光源的激光驱动电流的激光驱动电路中，叠加超过视频信号的频带的频率的高频信号基于输入视频信号产生的激光器驱动电流，由此减少由激光引起的斑点噪声作为相干光。

3. 发明授权

US09124068B1 Method and apparatus to reduce noise caused by mode hopping in external cavity lasers 有权
标题翻译：降低外腔激光器跳模引起噪声的方法和装置
公开(公告)号：US09124068B1
公开(公告)日：2015-09-01
申请号：US14192654
申请日：2014-02-27
申请人： Agilent Technologies, Inc.
发明人： Miao Zhu , Charles Hoke
IPC分类号： H01S3/10 , H01S5/14 , H01S5/065 , H01S5/0683 , H01S5/026
CPC分类号： H01S5/141 , H01S3/1055 , H01S3/1398 , H01S5/0652
摘要： An external cavity laser and method for operating same are disclosed. The external cavity laser includes a gain chip, a grating, an actuator and actuator driver. The grating diffracts light leaving the gain chip in a band of wavelengths back to the gain chip, the grating is characterized by an angle relative to light leaving the gain chip and distance from the gain chip, the angle and distance is controlled by the actuator. Part of the diffracted light is amplified by the gain chip. The actuator driver causes the angle to be dithered about an equilibrium angle in a motion characterized by an amplitude and average frequency. The amplitude of the dithering motion is chosen to either excite a plurality of adjacent laser modes of the gain chip or provide a servo signal for maintaining the grating angle at a target value.
摘要翻译：公开了一种外腔激光器及其操作方法。外腔激光器包括增益芯片，光栅，致动器和致动器驱动器。光栅将离开增益芯片的光衍射成波长带回到增益芯片，光栅的特征在于相对于离开增益芯片的光和与增益芯片的距离的角度，角度和距离由致动器控制。部分衍射光被增益芯片放大。致动器驱动器使得角度围绕以幅度和平均频率为特征的运动中的平衡角被抖动。选择抖动运动的幅度以激励增益芯片的多个相邻激光模式，或提供用于将光栅角保持在目标值的伺服信号。

4. 发明申请

US20150244150A1 METHOD AND APPARATUS TO REDUCE NOISE CAUSED BY MODE HOPPING IN EXTERNAL CAVITY LASERS 有权
标题翻译：通过外部空气激光器模式抑制引起的噪音减少噪声的方法和装置
公开(公告)号：US20150244150A1
公开(公告)日：2015-08-27
申请号：US14192654
申请日：2014-02-27
申请人： Agilent Technologies, Inc.
发明人： Miao Zhu , Charles Hoke
IPC分类号： H01S5/14 , H01S5/0683 , H01S5/026 , H01S5/065
CPC分类号： H01S5/141 , H01S3/1055 , H01S3/1398 , H01S5/0652
摘要： An external cavity laser and method for operating same are disclosed. The external cavity laser includes a gain chip, a grating, an actuator and actuator driver. The grating diffracts light leaving the gain chip in a band of wavelengths back to the gain chip, the grating is characterized by an angle relative to light leaving the gain chip and distance from the gain chip, the angle and distance is controlled by the actuator. Part of the diffracted light is amplified by the gain chip. The actuator driver causes the angle to be dithered about an equilibrium angle in a motion characterized by an amplitude and average frequency. The amplitude of the dithering motion is chosen to either excite a plurality of adjacent laser modes of the gain chip or provide a servo signal for maintaining the grating angle at a target value.
摘要翻译：公开了一种外腔激光器及其操作方法。外腔激光器包括增益芯片，光栅，致动器和致动器驱动器。光栅将离开增益芯片的光衍射成波长带回到增益芯片，光栅的特征在于相对于离开增益芯片的光和与增益芯片的距离的角度，角度和距离由致动器控制。部分衍射光被增益芯片放大。致动器驱动器使得角度围绕以幅度和平均频率为特征的运动中的平衡角被抖动。选择抖动运动的幅度以激励增益芯片的多个相邻激光模式，或提供用于将光栅角保持在目标值的伺服信号。

5. 发明授权

US09008142B2 System and method for optimization of coherence length of tunable laser sources 有权
标题翻译：可调激光源相干长度优化的系统和方法
公开(公告)号：US09008142B2
公开(公告)日：2015-04-14
申请号：US13555107
申请日：2012-07-21
申请人： Michael Minneman , Jason Ensher , Thomas Milner
发明人： Michael Minneman , Jason Ensher , Thomas Milner
IPC分类号： H01S5/00 , H01S5/065 , H01S5/0625 , H01S5/14 , H01S5/183
CPC分类号： H01S5/0652 , H01S5/06256 , H01S5/141 , H01S5/183
摘要： A system and method for adjusting the coherence length of a tunable laser to optimize measurements and reduce artifacts. A tuning element of the laser system modulates, adjusts, or controls parameters associate with the tunable laser, such that the output wavelength of the tunable laser is modulated or adjusted over a wavelength range within a time interval. Modulation of the parameter has the effect of increasing a linewidth of the tunable laser.
摘要翻译：用于调整可调谐激光器的相干长度以优化测量并减少伪影的系统和方法。激光系统的调谐元件调制，调整或控制与可调激光器相关联的参数，使得可调谐激光器的输出波长在时间间隔内在波长范围内被调制或调节。参数的调制具有增加可调激光器的线宽的作用。

6. 发明申请

US20140079086A1 LASER DIODE, OPTICAL DISK DEVICE AND OPTICAL PICKUP 审中-公开
标题翻译：激光二极管，光盘设备和光学拾取
公开(公告)号：US20140079086A1
公开(公告)日：2014-03-20
申请号：US14083803
申请日：2013-11-19
申请人： Tohoku University , Sony Corporation
发明人： Makoto Oota , Hiroyuki Yokoyama , Masaru Kuramoto , Masao Ikeda
IPC分类号： H01S5/065
CPC分类号： H01S5/0658 , H01S5/0425 , H01S5/0602 , H01S5/0652 , H01S5/1064 , H01S5/22 , H01S5/32341
摘要： A laser diode capable of performing self-pulsation operation, and capable of sufficiently reducing the coherence of laser light and stably obtaining low-noise laser light is provided. The laser diode includes: a laser chip including at least one laser stripe which extends in a resonator length direction between a first end surface and a second end surface opposed to each other, in which the laser stripe includes a gain region and a saturable absorption region in the resonator length direction, and the width of the laser stripe in the saturable absorption region is larger than the width of the laser stripe in the gain region.
摘要翻译：提供能够进行自脉动操作并且能够充分降低激光的相干性并稳定地获得低噪声激光的激光二极管。激光二极管包括：激光器芯片，其包括在彼此相对的第一端面和第二端面之间沿谐振器长度方向延伸的至少一个激光条纹，其中激光条纹包括增益区域和可饱和吸收区域在谐振器长度方向上，可饱和吸收区域中的激光条纹的宽度大于增益区域中激光条纹的宽度。

7. 发明授权

US08615027B2 Laser diode, optical disk device and optical pickup 失效
标题翻译：激光二极管，光盘设备和光学拾取器
公开(公告)号：US08615027B2
公开(公告)日：2013-12-24
申请号：US12502564
申请日：2009-07-14
申请人： Makoto Oota , Hiroyuki Yokoyama , Masaru Kuramoto , Masao Ikeda
发明人： Makoto Oota , Hiroyuki Yokoyama , Masaru Kuramoto , Masao Ikeda
IPC分类号： H01S5/00
CPC分类号： H01S5/0658 , H01S5/0425 , H01S5/0602 , H01S5/0652 , H01S5/1064 , H01S5/22 , H01S5/32341
摘要： A laser diode capable of performing self-pulsation operation, and capable of sufficiently reducing the coherence of laser light and stably obtaining low-noise laser light is provided. A laser diode includes: a laser chip including at least one laser stripe which extends in a resonator length direction between a first end surface and a second end surface opposed to each other, in which the laser stripe includes a gain region and a saturable absorption region in the resonator length direction, and the width of the laser stripe in the saturable absorption region is larger than the width of the laser stripe in the gain region.
摘要翻译：提供能够进行自脉动操作并且能够充分降低激光的相干性并稳定地获得低噪声激光的激光二极管。激光二极管包括：激光器芯片，其包括在彼此相对的第一端面和第二端面之间沿谐振器长度方向延伸的至少一个激光条纹，其中激光条纹包括增益区域和可饱和吸收区域在谐振器长度方向上，可饱和吸收区域中的激光条纹的宽度大于增益区域中激光条纹的宽度。

8. 发明授权

US08070298B2 Laser display system with optical feedback configured to reduce speckle artifacts 有权
公开(公告)号：US08070298B2
公开(公告)日：2011-12-06
申请号：US13100158
申请日：2011-05-03
申请人： Taha Masood
发明人： Taha Masood
IPC分类号： G03B21/14 , G03B21/26 , G03B21/28 , G03H1/12 , H01S3/13 , H01S5/00
CPC分类号： H04N9/3194 , G03B21/008 , H01S5/0652 , H01S5/0656 , H01S5/4093 , H04N9/3129
摘要： An imaging system (200) includes a plurality of laser sources (201) configured to produce a plurality of light beams (204). One or more optical alignment devices (220) orient the light beams (204) into a collimated light beam (205). A light modulator (203) modulates the collimated light beam (205) such that images (206) can be presented on a display surface (207). Speckle is reduced with an optical feedback device (221) that causes the laser sources (201) to operate in a coherence collapsed state. Examples of optical feedback devices (221) include partially reflective mirrors and beam splitter-mirror combinations.

9. 发明授权

US07606273B2 Wavelength and intensity stabilized laser diode and application of same to pumping solid-state lasers 失效
标题翻译：波长和强度稳定的激光二极管及其应用于泵浦固态激光器
公开(公告)号：US07606273B2
公开(公告)日：2009-10-20
申请号：US11872642
申请日：2007-10-15
申请人： Sheng-Bai Zhu , Ningyi Luo , Jing Yu
发明人： Sheng-Bai Zhu , Ningyi Luo , Jing Yu
IPC分类号： H01S3/30 , H01S3/04 , H01S3/00
CPC分类号： H01S3/1312 , H01S3/067 , H01S3/0941 , H01S3/1305 , H01S5/0652
摘要： An efficient and low-noise solid-state laser is optically pumped by one or more laser diode(s) driven by RF modulated current. The solid-state laser operation is stabilized by the pump source stable in both spectrum and intensity, in conjunction with automatic power control wherein the feedback loop accurately reflects the true drift in the output power. Moreover, the pump efficiency is optimized and the optical noise is minimized by adjusting the diode operation temperature such that the pump wavelength coincides with the absorption peak of the gain medium. By internally or externally modulating the amplitude of the drive current, the pump diode(s) operate in pulsed mode with controllable shape, width, repetition rate, and pulse-to-pulse intervals, which enables essentially constant optical energy produced from each pulse of the solid-state laser in high repetition rates with variable pulse-to-pulse intervals.
摘要翻译：由RF调制电流驱动的一个或多个激光二极管光泵浦有效和低噪声的固态激光器。固态激光器的操作通过泵浦源稳定在光谱和强度两个方面，结合自动功率控制，其中反馈回路准确反映输出功率的真实漂移。此外，通过调节二极管工作温度使得泵浦波长与增益介质的吸收峰值一致，从而优化泵效率并使光学噪声最小化。通过内部或外部调制驱动电流的幅度，泵浦二极管以脉冲模式运行，具有可控的形状，宽度，重复率和脉冲间隔，这使得基本上恒定的光能从每个脉冲具有可变脉冲间隔的高重复率的固态激光器。

10. 发明授权

US07310357B2 Providing low-coherence light 有权
标题翻译：提供低相干光
公开(公告)号：US07310357B2
公开(公告)日：2007-12-18
申请号：US11071120
申请日：2005-03-02
申请人： Andres Zuluaga , Jay Caplan
发明人： Andres Zuluaga , Jay Caplan
IPC分类号： H01S3/10 , H01S3/08
CPC分类号： H01S5/146 , A61B18/24 , H01S5/0652 , H01S5/141 , H01S5/143 , H01S5/4068
摘要： The invention features an apparatus and an associated method for illuminating a target area. The apparatus includes reflectors defining a first optical cavity. The first optical cavity defines a first set of longitudinal modes. The apparatus includes a first gain medium defining a first gain band. The first gain medium is configured to cause a plurality of the longitudinal modes of the first set to oscillate over an oscillation band within the first gain band when the first gain medium is pumped at an operative level. The apparatus includes a first optical waveguide positioned within the first optical cavity. The first optical waveguide has a length selected to cause a temporal coherence length of light emitted from the first optical cavity to be shorter than a scattering distance associated with the target area.
摘要翻译：本发明的特征在于用于照亮目标区域的装置和相关联的方法。该装置包括限定第一光学腔的反射器。第一光学腔定义第一组纵向模式。该装置包括限定第一增益带的第一增益介质。第一增益介质被配置为当第一增益介质被泵浦在操作电平时，使第一组的多个纵向模式在第一增益频带内的振荡频带上振荡。该装置包括位于第一光腔内的第一光波导。第一光波导具有被选择为使得从第一光学腔发射的光的时间相干长度短于与目标区域相关联的散射距离的长度。

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