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    • 3. 发明申请
    • COMPACT ULTRA-SHORT PULSE SOURCE AMPLIFIERS
    • 紧凑型超短脉冲源放大器
    • WO2014062759A2
    • 2014-04-24
    • PCT/US2013/065169
    • 2013-10-16
    • IMRA AMERICA, INC.
    • FERMANN, Martin
    • G02F1/35
    • H01S3/1106B23K26/0624H01J49/161H01S3/0057H01S3/06708H01S3/06741H01S3/0675H01S3/06754H01S3/094003H01S3/094026H01S3/094042H01S3/094061H01S3/0941H01S3/109H01S3/1115
    • The present invention relates to compact, low noise, ultra-short pulse sources based on fiber amplifiers, and various applications thereof. At least one implementation includes an optical amplification system having a fiber laser seed source producing seed pulses at a repetition rate corresponding to the fiber laser cavity round trip time. A nonlinear pulse transformer, comprising a fiber length greater than about 10 m, receives a seed pulse at its input and produces a spectrally broadened output pulse at its output, the output pulse having a spectral bandwidth which is more than 1.5 times a spectral bandwidth of a seed pulse. A fiber power amplifier receives and amplifies spectrally broadened output pulses. A pulse compressor is configured to temporally compress spectrally broadened pulses amplified by said power amplifier. Applications include micro-machining, ophthalmology, molecular desorption or ionization, mass-spectroscopy, and/or laser- based, biological tissue processing.
    • 本发明涉及基于光纤放大器的紧凑,低噪声,超短脉冲源及其各种应用。 至少一个实施方案包括具有光纤激光种子源的光放大系统,其以对应于光纤激光腔往返时间的重复频率产生种子脉冲。 包括光纤长度大于约10微米的非线性脉冲变压器在其输入处接收种子脉冲,并在其输出端产生光谱扩展的输出脉冲,其输出脉冲的频谱带宽大于光谱带宽的1.5倍 种子脉冲。 光纤功率放大器接收并放大光谱扩展的输出脉冲。 脉冲压缩器被配置为在时间上压缩由所述功率放大器放大的频谱变宽的脉冲。 应用包括微加工,眼科学,分子解吸或离子化,质谱法和/或基于激光的生物组织处理。
    • 4. 发明申请
    • OPTICAL FREQUENCY RULER
    • 光学频率规则
    • WO2013165945A1
    • 2013-11-07
    • PCT/US2013/038752
    • 2013-04-30
    • IMRA AMERICA, INC.
    • FERMANN, Martin E.HARTL, Ingmar
    • H01S3/05H01S3/098H01S3/10
    • G02F1/39H01S3/0092H01S3/2308H01S3/2383
    • The present invention relates to frequency rulers. At least one embodiment includes a mode locked pump source operated at pulse repetition rate, and a pump output having a pump carrier envelope offset frequency. A nonlinear optical system outputs a frequency ruler spectrum comprising individual frequency modes. The frequency modes may be characterized by a frequency spacing which is an integer multiple of the repetition rate and by distinct ruler carrier envelope offset frequencies which exhibit at least one discontinuity across the frequency output. The ruler carrier envelope offset frequencies are substantially locked to the carrier envelope offset frequency of the pump laser. One preferred embodiment includes a frequency doubled, doubly resonant, non-degenerate OPO (DNOPO), a supercontinuum generation (SC) stage and at least one reference laser arranged downstream from a Tm fiber-based pump source. A plurality of beat signals generated therefrom provide for stabilization of the system.
    • 本发明涉及频率标尺。 至少一个实施例包括以脉冲重复率操作的模式锁定泵浦源,以及具有泵载波包络偏移频率的泵输出。 非线性光学系统输出包括各种频率模式​​的频率标尺。 频率模式的特征在于频率间隔是重复率的整数倍,并且通过不同的标尺载波包络偏移频率来表征,该频率间隔在频率输出端表现出至少一个不连续性。 标尺载波包络偏移频率基本上锁定在泵浦激光器的载波包络偏移频率上。 一个优选实施例包括频率倍增,双重谐振,非简并OPO(DNOPO),超连续谱产生(SC)级以及布置在基于Tm纤维的泵浦源的下游的至少一个参考激光器。 由此产生的多个拍子信号提供了系统的稳定性。
    • 5. 发明申请
    • APPARATUS FOR HIGH CONTRAST OPTICAL SIGNALING, AND EXEMPLARY APPLICATIONS
    • 高对比度光信号的设备和示例应用
    • WO2013055741A1
    • 2013-04-18
    • PCT/US2012/059466
    • 2012-10-10
    • IMRA AMERICA, INC.
    • ARAI, Alan Y.
    • G09G5/00
    • B60R1/1207B60Q1/00B60R2001/1215G09G2380/06G09G2380/10
    • 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. 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 OFFstate and minimal effect on the image in the display medium in the OFF state.
    • 显示装置产生高可见度光信号,例如ICON,包括符号,形状或其他图像的表示的ICON。 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。 在观察点的照明OFF状态下的ICON的可视性足够低,使得保持显示介质的正常操作。 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状态具有非常低的可视性,并且对 显示介质中的图像处于OFF状态。
    • 6. 发明申请
    • FREQUENCY COMB SOURCE WITH LARGE COMB SPACING
    • 频率合成源与大型COMB间距
    • WO2012074623A1
    • 2012-06-07
    • PCT/US2011/057567
    • 2011-10-25
    • IMRA AMERICA, INC.FERMANN, MartinHARTL, Ingmar
    • FERMANN, MartinHARTL, Ingmar
    • H01S3/098
    • G02F1/365G01J3/10G02F2001/3528H01S3/0085H01S3/0092H01S3/0675H01S3/08054H01S3/0809H01S3/10046H01S3/105H01S3/1106H01S3/1112H01S3/1115H01S3/1118H01S3/1618
    • 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.
    • 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。