公开(公告)号：WO2009148924A8

公开(公告)日：2010-07-29

申请号：PCT/US2009045505

申请日：2009-05-28

Applicant: COHERENT INC ,  STARODOUMOV ANDREI

Inventor： STARODOUMOV ANDREI

IPC: B23K26/06 ,  H01S3/067 ,  H01S3/23 ,  H01S5/00 ,  H01S5/50

CPC classification number: B23K26/0622 ,  H01S3/06754 ,  H01S3/2316 ,  H01S5/0057 ,  H01S5/0085 ,  H01S5/06216 ,  H01S5/4006 ,  H01S5/5027

Abstract: A modulated diode-laser provides a first sequence of optical pulses. The first sequence of optical pulses is further modulated to provide a second sequence of optical pulses. Pulses in the second sequence have a shorter duration than pulses in the first sequence. The first sequence of pulses may be generated by a directly modulated diode laser (12) or by a cw diode laser (42) with subsequent external modulator (48). Modulators external to the diode laser may comprise either a modulated double pass semiconductor optical amplifier (22, 48) or an electro-optical modulator (32). Nanosecond pulses with high output contrast ratio and defined spectral width can be generated.

Abstract translation: 调制二极管激光器提供第一序列的光脉冲。 光脉冲的第一序列被进一步调制以提供第二序列的光脉冲。 第二序列中的脉冲具有比第一序列中的脉冲更短的持续时间。 脉冲的第一序列可以由直接调制二极管激光器（12）或具有随后的外部调制器（48）的cw二极管激光器（42）产生。 二极管激光器外部的调制器可以包括调制双通道半导体光放大器（22,48）或电光调制器（32）。 可以产生具有高输出对比度和限定光谱宽度的纳秒脉冲。

公开(公告)号：WO2009042024A3

公开(公告)日：2009-07-02

申请号：PCT/US2008010215

申请日：2008-08-28

Applicant: COHERENT INC ,  STARODOUMOV ANDREI ,  GOVORKOV SERGEI V ,  SPINELLI LUIS A

Inventor： STARODOUMOV ANDREI ,  GOVORKOV SERGEI V ,  SPINELLI LUIS A

IPC: H01S3/00 ,  G02B27/10 ,  G02F1/35

CPC classification number: H01S3/06754 ,  G02B6/29352 ,  H01S3/005

Abstract: ,MOPA laser apparatus includes a master oscillator (22) and a preamplifier (24) providing a train of optical pulses. The pulse train is input to a fiber optic device arranged to multiply the pulse-repetition frequency (PRF) of the input pulse train. The PRF multiplying device (26) divides each pulse in the into train into two pulses and delays one pulse relative to the. other, some portion of one of the pulses and a portion of the other are delivered by the fiber optic PRF multiplying device as an output pulse- train, having a PRF equal to twice the PRF of the input pulse train.

Abstract translation: MOPA激光装置包括提供一列光脉冲的主振荡器（22）和前置放大器（24）。 脉冲串被输入到布置成乘以输入脉冲序列的脉冲重复频率（PRF）的光纤装置。 PRF乘法装置（26）将进入列车中的每个脉冲分成两个脉冲并相对于该脉冲延迟一个脉冲。 另一方面，一个脉冲的一部分和另一个脉冲的一部分由光纤PRF乘法装置作为输出脉冲串传送，其PRF等于输入脉冲串的PRF的两倍。

公开(公告)号：WO2012173939A3

公开(公告)日：2013-04-18

申请号：PCT/US2012041953

申请日：2012-06-11

Applicant: COHERENT INC ,  STARODOUMOV ANDREI ,  LAMBERT RONALD ,  SNADDEN MICHAEL ,  DIENING ANDREAS

Inventor： STARODOUMOV ANDREI ,  LAMBERT RONALD ,  SNADDEN MICHAEL ,  DIENING ANDREAS

IPC: H01S3/067 ,  H01S3/00 ,  H01S3/10 ,  H01S3/13

CPC classification number: H01S3/10015 ,  H01S3/0092 ,  H01S3/06758 ,  H01S3/1302 ,  H01S3/1306

Abstract: A fiber-MOPA includes a seed-pulse source followed by fiber amplifier stages. The seed pulse source delivers signal pulses for performing a laser operation and delivers radiation between the seed pulses to maintain the collective average of the seed pulse power and intermediate radiation power constant. Keeping this average power constant keeps the instantaneous available gain of the fiber amplifier stages constant. This provides that the seed pulse delivery can be changed from one regime to a next without a period of instability between the regimes.

Abstract translation: 光纤MOPA包括一个种子脉冲源，随后是光纤放大器级。 种子脉冲源提供用于执行激光操作的信号脉冲，并且在种子脉冲之间传送辐射以保持种子脉冲功率和中间辐射功率的总体平均值恒定。 保持该平均功率恒定可以保持光纤放大器级的瞬时可用增益恒定。 这提供了种子脉冲输送可以从一个状态改变到下一个状态，而不会在两个方案之间的不稳定期间。

公开(公告)号：WO2012082472A3

公开(公告)日：2013-01-03

申请号：PCT/US2011063572

申请日：2011-12-06

Applicant: COHERENT INC ,  SIMANOVSKI DMITRI ,  STARODOUMOV ANDREI

Inventor： SIMANOVSKI DMITRI ,  STARODOUMOV ANDREI

IPC: H01S3/067 ,  H01S3/11

CPC classification number: H01S3/1106 ,  H01S3/067 ,  H01S3/08009 ,  H01S3/0805 ,  H01S3/1118 ,  H01S3/117 ,  H01S3/1618

Abstract: A mode-locked fiber laser has a resonator including a gain-fiber, a mode-locking element, and a spectrally-selective dispersion compensating device. The resonator can be a standing-wave resonator or a traveling- wave resonator. The dispersion compensating device includes only one diffraction grating combined with a lens and a mirror to provide a spatial spectral spread. The numerical aperture of the gain-fiber selects which portion of the spectral spread can oscillate in the resonator.

Abstract translation: 锁模光纤激光器具有包括增益光纤，锁模元件和光谱选择性色散补偿装置的谐振器。 谐振器可以是驻波谐振器或行波谐振器。 色散补偿装置仅包括与透镜和反射镜组合的一个衍射光栅，以提供空间光谱扩展。 增益光纤的数值孔径选择频谱扩展的哪一部分可以在谐振器中振荡。

公开(公告)号：WO2011022333A3

公开(公告)日：2012-07-05

申请号：PCT/US2010045625

申请日：2010-08-16

Applicant: COHERENT INC ,  STARODOUMOV ANDREI ,  HODGSON NORMAN

Inventor： STARODOUMOV ANDREI ,  HODGSON NORMAN

IPC: H01S3/23 ,  H01S3/067

CPC classification number: H01S3/2308 ,  H01S3/0092 ,  H01S3/06754 ,  H01S3/11 ,  H01S3/2383

Abstract: Master oscillator power amplifier (MOPA) apparatus includes two seed-pulse sources coupled to a single fiber amplifier including one or more stages of amplification. One of the seed-pulse sources is a single-mode source generating pulses having a duration selectively variable between about 0.1 ns and 10 ns. The other seed-pulse source is a multi-mode source generating pulses having a duration selectively variable between about 1 ns and 10 µs. Selectively operating one or the other of the seed-pulse sources provides that the apparatus can deliver pulses selectively variable in a range between about 0.1 ns and 10 µs.

Abstract translation: 主振荡器功率放大器（MOPA）装置包括耦合到包括一个或多个放大级的单个光纤放大器的两个种子脉冲源。 种子脉冲源中的一个是单模源产生脉冲，其持续时间选择性地在约0.1ns和10ns之间变化。 另一个种子脉冲源是产生具有约1ns至10μs之间选择性变化的持续时间的脉冲的多模式源。 选择性地操作种子脉冲源中的一个或另一个提供了该设备可以递送在约0.1ns和10μs之间的范围内选择性变化的脉冲。

公开(公告)号：WO2008016579A3

公开(公告)日：2008-12-11

申请号：PCT/US2007017065

申请日：2007-07-31

Applicant: COHERENT INC ,  STARODOUMOV ANDREI ,  CRITTENDEN PAUL

Inventor： STARODOUMOV ANDREI ,  CRITTENDEN PAUL

IPC: H01S3/067

CPC classification number: H01S3/06754 ,  H01S3/005 ,  H01S3/0064 ,  H01S3/06712 ,  H01S3/06787 ,  H01S3/2333

Abstract: Several examples of double-pass fiber amplifiers including a polarization maintaining (PM) gain-fiber are disclosed. In each example, input and twice-amplified output are separated by an all-fiber, polarization-maintaining polarization splitter combiner. The examples include double-pass fiber amplifiers not including any bulk components and double pass fiber amplifiers including a bulk component or a Faraday rotating mirror located in a position in the amplifier wherein the component is exposed only to radiation amplified on the first pass through the gain-fiber.

Abstract translation: 公开了包括偏振维持（PM）增益光纤的双通道光纤放大器的几个示例。 在每个示例中，输入和两倍放大的输出由全光纤，偏振保持偏振分束器组合器隔开。 这些示例包括不包括任何体积分量的双通道光纤放大器和包括位于放大器中的位置的体积分量或法拉第旋转镜的双通道光纤放大器，其中该组件仅暴露于在第一次通过增益时放大的辐射 -纤维。