公开(公告)号：US09333900B2

公开(公告)日：2016-05-10

申请号：US13648484

申请日：2012-10-10

Applicant: IMRA AMERICA, INC.

Inventor： Alan Y. Arai

IPC: B60Q1/00 ,  B60Q1/26 ,  G02F1/153 ,  B60R1/12

CPC classification number: B60R1/1207 ,  B60Q1/00 ,  B60R2001/1215 ,  G09G2380/06 ,  G09G2380/10

Abstract: A display apparatus generates a high visibility optical signal, such as an ICON, the ICON comprising a symbol, shape, or other image-like representation. The ICON becomes visible at an observation point during an illumination ON-state. The ICON may be formed as a portion of display medium, for example as a machined portion of a mirror capable of forming images of a scene by reflection in normal operation. The visibility of the ICON in the illumination OFF-state from an observation point is sufficiently low such that the normal operation of the display medium is maintained. The display apparatus may be used in a blind spot warning system for a vehicle. Visible wavelength LEDs, RGB LEDs and/or diode lasers may be utilized as an illumination source. Ultrashort laser processing or other methods for material modification may be utilized to form microscopic features which distribute incident light, increasing the visibility of the optical signal at an observation point in an ON-state, with very low visibility in the OFF-state and minimal effect on the image in the display medium in the OFF state.

Abstract translation: 显示装置产生诸如ICON的高可见度光信号，ICON包括符号，形状或其他图像样表示。 ICON在照明ON状态的观察点变得可见。 ICON可以形成为显示介质的一部分，例如作为能够在正常操作中通过反射来形成场景的图像的镜子的加工部分。 ICON在观察点的照明截止状态下的可见度足够低，从而维持显示介质的正常操作。 显示装置可以用于车辆的盲点警告系统。 可见波长LED，RGB LED和/或二极管激光器可用作照明源。 可以使用超短激光加工或其他材料修饰方法来形成分布入射光的微观特征，在ON状态的观察点增加光信号的可视性，在OFF状态下具有非常低的可见度和最小的影响 在显示介质中的图像处于OFF状态。

公开(公告)号：US20160097963A1

公开(公告)日：2016-04-07

申请号：US14967709

申请日：2015-12-14

Applicant: IMRA AMERICA, INC.

Inventor： Martin FERMANN ,  Ingmar HARTL

IPC: G02F1/365 ,  H01S3/11 ,  H01S3/00

CPC classification number: G02F1/365 ,  G01J3/10 ,  G02F2001/3528 ,  H01S3/0085 ,  H01S3/0092 ,  H01S3/0675 ,  H01S3/08054 ,  H01S3/0809 ,  H01S3/10046 ,  H01S3/105 ,  H01S3/1106 ,  H01S3/1112 ,  H01S3/1115 ,  H01S3/1118 ,  H01S3/1618

Abstract: A frequency comb laser providing large comb spacing is disclosed. At least one embodiment includes a mode locked waveguide laser system. The mode locked waveguide laser includes a laser cavity having a waveguide, and a dispersion control unit (DCU) in the cavity. The DCU imparts an angular dispersion, group-velocity dispersion (GVD) and a spatial chirp to a beam propagating in the cavity. The DCU is capable of producing net GVD in a range from a positive value to a negative value. In some embodiments a tunable fiber frequency comb system configured as an optical frequency synthesizer is provided. In at least one embodiment a low phase noise micro-wave source may be implemented with a fiber comb laser having a comb spacing greater than about 1 GHz. The laser system is suitable for mass-producible fiber comb sources with large comb spacing and low noise. Applications include high-resolution spectroscopy.

Abstract translation: 公开了一种提供较大梳形间距的频率梳状激光器。 至少一个实施例包括模式锁定波导激光系统。 模式锁定波导激光器包括具有波导的激光腔和空腔中的色散控制单元（DCU）。 DCU向在腔中传播的光束赋予角度色散，群速度色散（GVD）和空间啁啾声。 DCU能够在从正值到负值的范围内产生净GVD。 在一些实施例中，提供了被配置为光频合成器的可调光纤频率梳状系统。 在至少一个实施例中，低相位噪声微波源可以用具有大于约1GHz的梳齿间隔的光纤梳状激光器来实现。 激光系统适用于具有大梳齿间隔和低噪音的大规模生产的光纤梳状光源。 应用包括高分辨率光谱。

公开(公告)号：US20160094008A1

公开(公告)日：2016-03-31

申请号：US14964779

申请日：2015-12-10

Applicant: IMRA AMERICA, INC.

Inventor： Martin E. FERMANN ,  Ingmar HARTL

IPC: H01S3/10 ,  H01S3/13 ,  H01S3/23 ,  H01S3/11 ,  H01S3/106

CPC classification number: H01S3/10046 ,  G01B9/02001 ,  G01N21/31 ,  G01N2021/317 ,  G02B6/02304 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/08054 ,  H01S3/1067 ,  H01S3/1068 ,  H01S3/11 ,  H01S3/1115 ,  H01S3/13 ,  H01S3/1307 ,  H01S3/1392 ,  H01S3/1394 ,  H01S3/2383

Abstract: The invention relates to scanning pulsed laser systems for optical imaging. Coherent dual scanning laser systems (CDSL) are disclosed and some applications thereof. Various alternatives for implementation are illustrated, including highly integrated configurations. In at least one embodiment a coherent dual scanning laser system (CDSL) includes two passively modelocked fiber oscillators. The oscillators are configured to operate at slightly different repetition rates, such that a difference δfr in repetition rates is small compared to the values fr1 and fr2 of the repetition rates of the oscillators. The CDSL system also includes a non-linear frequency conversion section optically connected to each oscillator. The section includes a non-linear optical element generating a frequency converted spectral output having a spectral bandwidth and a frequency comb comprising harmonics of the oscillator repetition rates. A CDSL may be arranged in an imaging system for one or more of optical imaging, microscopy, micro-spectroscopy and/or THz imaging.

Abstract translation: 本发明涉及用于光学成像的扫描脉冲激光系统。 公开了相干双扫描激光系统（CDSL）及其一些应用。 示出了用于实现的各种替代方案，包括高度集成的配置。 在至少一个实施例中，相干双扫描激光系统（CDSL）包括两个被动锁模光纤振荡器。 振荡器被配置为以稍微不同的重复率操作，使得与振荡器的重复率的值fr1和fr2相比，重复率的差δfr小。 CDSL系统还包括与每个振荡器光学连接的非线性频率转换部分。 该部分包括产生具有频谱带宽的频率转换频谱输出和包括振荡器重复频率的谐波的频率梳的非线性光学元件。 可以在成像系统中布置CDSL以用于光学成像，显微镜，微光谱和/或THz成像中的一种或多种。

公开(公告)号：US09252560B2

公开(公告)日：2016-02-02

申请号：US14247828

申请日：2014-04-08

Applicant: IMRA AMERICA, INC.

Inventor： Martin E. Fermann ,  Ingmar Hartl

IPC: H01S3/10 ,  H01S3/11 ,  G01N21/31 ,  H01S3/23 ,  G01B9/02 ,  G02B6/02 ,  H01S3/067 ,  H01S3/08 ,  H01S3/106 ,  H01S3/13 ,  H01S3/139

CPC classification number: H01S3/10046 ,  G01B9/02001 ,  G01N21/31 ,  G01N2021/317 ,  G02B6/02304 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/08054 ,  H01S3/1067 ,  H01S3/1068 ,  H01S3/11 ,  H01S3/1115 ,  H01S3/13 ,  H01S3/1307 ,  H01S3/1392 ,  H01S3/1394 ,  H01S3/2383

Abstract: The invention relates to scanning pulsed laser systems for optical imaging. Coherent dual scanning laser systems (CDSL) are disclosed and some applications thereof. Various alternatives for implementation are illustrated, including highly integrated configurations. In at least one embodiment a coherent dual scanning laser system (CDSL) includes two passively modelocked fiber oscillators. The oscillators are configured to operate at slightly different repetition rates, such that a difference δfr in repetition rates is small compared to the values fr1 and fr2 of the repetition rates of the oscillators. The CDSL system also includes a non-linear frequency conversion section optically connected to each oscillator. The section includes a non-linear optical element generating a frequency converted spectral output having a spectral bandwidth and a frequency comb comprising harmonics of the oscillator repetition rates. A CDSL may be arranged in an imaging system for one or more of optical imaging, microscopy, micro-spectroscopy and/or THz imaging.

Abstract translation: 本发明涉及用于光学成像的扫描脉冲激光系统。 公开了相干双扫描激光系统（CDSL）及其一些应用。 示出了用于实现的各种替代方案，包括高度集成的配置。 在至少一个实施例中，相干双扫描激光系统（CDSL）包括两个被动锁模光纤振荡器。 振荡器被配置为以稍微不同的重复率操作，使得与振荡器的重复率的值fr1和fr2相比，重复率的差δfr小。 CDSL系统还包括与每个振荡器光学连接的非线性频率转换部分。 该部分包括产生具有频谱带宽的频率转换频谱输出和包括振荡器重复频率的谐波的频率梳的非线性光学元件。 可以在成像系统中布置CDSL以用于光学成像，显微镜，微光谱和/或THz成像中的一种或多种。

公开(公告)号：US20150372445A1

公开(公告)日：2015-12-24

申请号：US14837619

申请日：2015-08-27

Applicant: IMRA AMERICA, INC.

Inventor： Donald J. HARTER

IPC: H01S3/10 ,  H01S3/108 ,  H01S3/00

CPC classification number: H01S3/10038 ,  G01J11/00 ,  H01S3/0014 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/06754 ,  H01S3/10023 ,  H01S3/10061 ,  H01S3/102 ,  H01S3/1024 ,  H01S3/108 ,  H01S3/109 ,  H01S3/1305 ,  H01S3/1618

Abstract: A femtosecond laser based laser processing system having a femtosecond laser, frequency conversion optics, beam manipulation optics, target motion control, processing chamber, diagnostic systems and system control modules. The femtosecond laser based laser processing system allows for the utilization of the unique heat control in micromachining, and the system has greater output beam stability, continuously variable repetition rate and unique temporal beam shaping capabilities.

Abstract translation: 飞秒激光激光处理系统，具有飞秒激光，变频光学，光束操纵光学，目标运动控制，处理室，诊断系统和系统控制模块。 基于飞秒激光的激光加工系统允许在微加工中利用独特的热控制，并且该系统具有更大的输出光束稳定性，连续可变的重复率和独特的时间波束整形能力。

公开(公告)号：US20150325977A1

公开(公告)日：2015-11-12

申请号：US14685320

申请日：2015-04-13

Applicant: IMRA America, Inc.

Inventor： Xinhua Gu ,  Mark Bendett ,  Gyu Cheon Cho ,  Martin E. Fermann

IPC: H01S3/11 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/102 ,  H01S3/067 ,  H01S3/094

CPC classification number: H01S3/1115 ,  H01S3/0057 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/06712 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094042 ,  H01S3/0941 ,  H01S3/1028 ,  H01S3/1305 ,  H01S3/1618 ,  H01S3/1698

Abstract: A pulsed laser comprises an oscillator and amplifier. An attenuator and/or pre-compressor may be disposed between the oscillator and amplifier to improve performance and possibly the quality of pulses output from the laser. Such pre-compression may be implemented with spectral filters and/or dispersive elements between the oscillator and amplifier. The pulsed laser may have a modular design comprising modular devices that may have Telcordia-graded quality and reliability. Fiber pigtails extending from the device modules can be spliced together to form laser system. In one embodiment, a laser system operating at approximately 1050 nm comprises an oscillator having a spectral bandwidth of approximately 19 nm. This oscillator signal can be manipulated to generate a pulse having a width below approximately 90 fs. A modelocked linear fiber laser cavity with enhanced pulse-width control includes concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers are included in the cavity to assist in linearly polarizing the output of the cavity. Very short pulses with a large optical bandwidth are obtained by matching the dispersion value of the fiber Bragg grating to the inverse of the dispersion of the intra-cavity fiber.

Abstract translation: 脉冲激光器包括振荡器和放大器。 衰减器和/或预压缩器可以设置在振荡器和放大器之间以提高性能以及可能的从激光器输出的脉冲的质量。 这种预压缩可以用振荡器和放大器之间的频谱滤波器和/或分散元件来实现。 脉冲激光器可以具有包括可能具有Telcordia分级质量和可靠性的模块化设备的模块化设计。 从设备模块延伸的光纤尾纤可以拼接在一起形成激光系统。 在一个实施例中，在大约1050nm操作的激光系统包括具有约19nm的光谱带宽的振荡器。 该振荡器信号可被操纵以产生宽度低于大约90fs的脉冲。 具有增强的脉冲宽度控制的锁模线性光纤激光腔包括两个偏振保持和非偏振保持光纤的级联部分。 变形纤维布拉格光栅和集成光纤偏振器被包括在空腔中，以帮助线性偏振空腔的输出。 通过将光纤布拉格光栅的色散值与腔内光纤的色散相反来获得具有大光学带宽的非常短的脉冲。

公开(公告)号：US09184549B2

公开(公告)日：2015-11-10

申请号：US14508056

申请日：2014-10-07

Applicant: IMRA AMERICA, INC.

Inventor： Martin E. Fermann ,  Ingmar Hartl

IPC: H01S3/30 ,  H01S3/00 ,  H01S3/094 ,  H01S3/11 ,  H01S3/109 ,  H01S3/067 ,  G02F1/35 ,  G02B6/02 ,  G02F1/365

CPC classification number: H01S3/0092 ,  G02B6/02038 ,  G02F1/3534 ,  G02F1/365 ,  G02F2001/3528 ,  H01S3/067 ,  H01S3/06725 ,  H01S3/094046 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/30 ,  H01S3/302

Abstract: Compact laser systems are disclosed which include ultrafast laser sources in combination with nonlinear crystals or waveguides. In some implementations fiber based mid-IR sources producing very short pulses and/or mid-IR sources based on a mode locked fiber lasers are utilized. A difference frequency generator receives outputs from the ultrafast sources, and generates an output including a difference frequency. The output power from the difference frequency generator can further be enhanced via the implementation of large core dispersion shifted fibers. Exemplary applications of the compact, high brightness mid-IR light sources include medical applications, spectroscopy, ranging, sensing and metrology.

Abstract translation: 公开了紧凑的激光系统，其包括与非线性晶体或波导组合的超快激光源。 在一些实现中，利用基于模式锁定光纤激光器产生非常短脉冲和/或中红外光源的基于光纤的中红外光源。 差频发生器接收来自超快源的输出，并产生包括差频的输出。 来自差分频率发生器的输出功率可以通过实施大型核心色散位移光纤进一步提高。 紧凑的高亮度中红外光源的示例性应用包括医疗应用，光谱学，测距，感测和计量学。

公开(公告)号：US20150258631A1

公开(公告)日：2015-09-17

申请号：US14629617

申请日：2015-02-24

Applicant: IMRA America, Inc.

Inventor： Zhendong HU ,  Yong CHE

IPC: B23K26/06 ,  A61K9/10 ,  A61K9/14 ,  B23K26/14 ,  A61K31/12

CPC classification number: A61K9/10 ,  A61K9/14 ,  A61K31/12 ,  B01J13/0086 ,  B23K26/0624 ,  B23K26/144 ,  B23K26/146 ,  B82Y40/00 ,  Y10S977/889 ,  Y10S977/901

Abstract: Disclosed is a method of producing a chemically pure and stably dispersed organic nanoparticle colloidal suspension using an ultrafast pulsed laser ablation process. The method comprises irradiating a target of an organic compound material in contact with a poor solvent with ultrashort laser pulses at a high repetition rate and collecting the nanoparticles of the organic compound produced. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beam, an organic compound target in contact with a poor solvent, and a solvent circulating system to cool the laser focal volume and collect the produced nanoparticle products. By controlling various laser parameters, and with optional poor solvent flow movement, the method provides stable colloids of dispersed organic nanoparticles in the poor solvent in the absence of any stabilizing agents.

Abstract translation: 公开了使用超快脉冲激光烧蚀工艺制备化学纯的和稳定分散的有机纳米颗粒胶体悬浮液的方法。 该方法包括用高重复率的超短激光脉冲对与有害化合物接触的有机化合物材料进行照射，并收集生成的有机化合物的纳米颗粒。 该方法可以用高重复率超快脉冲激光源，用于聚焦和移动脉冲激光束的光学系统，与不良溶剂接触的有机化合物靶和溶剂循环系统来实现，以冷却激光焦点体积和 收集生产的纳米颗粒产品。 通过控制各种激光参数，并且具有可选的不良溶剂流动运动，该方法在不存在任何稳定剂的情况下在不良溶剂中提供分散的有机纳米颗粒的稳定胶体。

公开(公告)号：US20150249317A1

公开(公告)日：2015-09-03

申请号：US14709906

申请日：2015-05-12

Applicant: IMRA AMERICA, INC.

Inventor： Ingmar HARTL ,  Martin FERMANN

IPC: H01S3/11 ,  H01S3/067

CPC classification number: H01S3/1112 ,  G02F1/3558 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2203/56 ,  H01S3/067 ,  H01S3/06716 ,  H01S3/10007 ,  H01S2301/02

Abstract: Frequency standards based on mode-locked fiber lasers, fiber amplifiers and fiber-based ultra-broad bandwidth light sources, and applications of the same.

Abstract translation: 基于锁模光纤激光器，光纤放大器和基于光纤的超宽带宽光源的频率标准及其应用。

公开(公告)号：US09071037B2

公开(公告)日：2015-06-30

申请号：US14012508

申请日：2013-08-28

Applicant: IMRA America, Inc.

Inventor： Xinhua Gu ,  Mark Bendett ,  Gyu Cheon Cho ,  Martin E. Fermann

IPC: H01S3/30 ,  H01S3/067 ,  H01S3/11

CPC classification number: H01S3/1115 ,  H01S3/0057 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/06712 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094042 ,  H01S3/0941 ,  H01S3/1028 ,  H01S3/1305 ,  H01S3/1618 ,  H01S3/1698

Abstract: A pulsed laser comprises an oscillator and amplifier. An attenuator and/or pre-compressor may be disposed between the oscillator and amplifier to improve performance and possibly the quality of pulses output from the laser. Such pre-compression may be implemented with spectral filters and/or dispersive elements between the oscillator and amplifier. The pulsed laser may have a modular design comprising modular devices that may have Telcordia-graded quality and reliability. Fiber pigtails extending from the device modules can be spliced together to form laser system. In one embodiment, a laser system operating at approximately 1050 nm comprises an oscillator having a spectral bandwidth of approximately 19 nm. This oscillator signal can be manipulated to generate a pulse having a width below approximately 90 fs. A modelocked linear fiber laser cavity with enhanced pulse-width control includes concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers are included in the cavity to assist in linearly polarizing the output of the cavity. Very short pulses with a large optical bandwidth are obtained by matching the dispersion value of the fiber Bragg grating to the inverse of the dispersion of the intra-cavity fiber.

Abstract translation: 脉冲激光器包括振荡器和放大器。 衰减器和/或预压缩器可以设置在振荡器和放大器之间以提高性能以及可能的从激光器输出的脉冲的质量。 这种预压缩可以用振荡器和放大器之间的频谱滤波器和/或分散元件来实现。 脉冲激光器可以具有包括可能具有Telcordia分级质量和可靠性的模块化设备的模块化设计。 从设备模块延伸的光纤尾纤可以拼接在一起形成激光系统。 在一个实施例中，在大约1050nm操作的激光系统包括具有约19nm的光谱带宽的振荡器。 该振荡器信号可被操纵以产生宽度低于大约90fs的脉冲。 具有增强的脉冲宽度控制的锁模线性光纤激光腔包括两个偏振保持和非偏振保持光纤的级联部分。 变形纤维布拉格光栅和集成光纤偏振器被包括在空腔中，以帮助线性偏振空腔的输出。 通过将光纤布拉格光栅的色散值与腔内光纤的色散相反来获得具有大光学带宽的非常短的脉冲。