公开(公告)号：DE4427005A1

公开(公告)日：1995-02-09

申请号：DE4427005

申请日：1994-07-29

Applicant: IMRA AMERICA INC ,  UNIV MICHIGAN

Inventor： FERMANN MARTIN E ,  HARTER DONALD J

IPC: H01S3/07 ,  H01S3/06 ,  H01S3/067 ,  H01S3/082 ,  H01S3/098 ,  H01S3/16 ,  H01S3/106 ,  H04B10/04

Abstract: The object of the present invention is to provide a passively mode-locked laser which can achieve mode-locking of higher harmonics, a pulse repetition rate being produced which is comparable with that of known actively mode-locked lasers, without the complex modulation methods which are typically connected with active techniques being required. Exemplary embodiments of the present invention relate to a passively mode-locked laser, in which mode locking is achieved by splitting of the laser resonator based on harmonics or overtones. According to the present invention, relatively high repetition rates can be achieved, ultrashort pulses being provided, without the complex modulation methods of the active techniques being required, and without the laser being susceptible to instabilities which are typically connected with passive techniques, high repetition rates being achieved with the use of cavity subresonators.

公开(公告)号：WO2006042312A3

公开(公告)日：2008-11-27

申请号：PCT/US2005036879

申请日：2005-10-12

Applicant: IMRA AMERICA INC ,  HARTER DONALD J ,  CHO GYU C ,  FERMANN MARTIN E ,  HARTL INGMAR

Inventor： HARTER DONALD J ,  CHO GYU C ,  FERMANN MARTIN E ,  HARTL INGMAR

IPC: G02B6/02 ,  H04B10/17 ,  G02F1/35 ,  G02F1/37 ,  H01S3/00 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/10 ,  H01S3/109 ,  H01S3/16 ,  H01S3/23 ,  H01S3/30 ,  H04B10/12

CPC classification number: H01S5/5045 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/0078 ,  H01S3/0085 ,  H01S3/067 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094042 ,  H01S3/10023 ,  H01S3/109 ,  H01S3/1616 ,  H01S3/1618 ,  H01S3/1643 ,  H01S3/235

Abstract: An optimized Yb: doped fiber mode-locked oscillator and fiber amplifier system for seeding Nd: or Yb: doped regenerative amplifiers. The pulses are generated in the Yb: or Nd: doped fiber mode-locked oscillator, and may undergo spectral narrowing or broadening, wavelength converting, temporal pulse compression or stretching, pulse attenuation and/or lowering the repetition rate of the pulse train. The conditioned pulses are subsequently coupled into an Yb: or Nd: fiber amplifier. The amplified pulses are stretched before amplification in the regenerative amplifier that is based on an Nd: or Yb: doped solid-state laser material, and then recompressed for output.

Abstract translation: 一种优化的Yb：掺杂光纤锁模振荡器和光纤放大器系统，用于种子Nd：或Yb：掺杂再生放大器。 脉冲在Yb或Nd：掺杂光纤锁模振荡器中产生，并可能经历频谱变窄或变宽，波长转换，时间脉冲压缩或拉伸，脉冲衰减和/或降低脉冲序列的重复率。 调节脉冲随后耦合到Yb或Nd：光纤放大器中。 在基于Nd：或Yb：掺杂的固态激光材料的再生放大器中，放大后的放大脉冲被拉伸，然后再压缩输出。

公开(公告)号：WO2006057655A8

公开(公告)日：2007-08-23

申请号：PCT/US2005008626

申请日：2005-03-14

Applicant: IMRA AMERICA INC ,  FERMANN MARTIN E ,  IMESHEV GENNADY ,  CHO GYU CHOEN ,  LIU ZHENLIN ,  HARTER DONALD J

Inventor： FERMANN MARTIN E ,  IMESHEV GENNADY ,  CHO GYU CHOEN ,  LIU ZHENLIN ,  HARTER DONALD J

IPC: G02B6/02 ,  G02B6/26 ,  H01S3/00 ,  H01S3/067 ,  H04B10/00

CPC classification number: H01S3/0057 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094007 ,  H01S3/1086 ,  H01S3/1301 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/2308 ,  H01S3/2316 ,  H01S3/302

Abstract: By compensating polarization mode-dispersion as well chromatic dispersion in photonic crystal fiber pulse compressors, high pulse energies can be obtained from all-fiber chirped pulse amplification systems. By inducing third-order dispersion in fiber amplifiers via self-phase modulation, the third-order chromatic dispersion from bulk grating pulse compressors can be compensated and the pulse quality of hybrid fiber/bulk chirped pulse amplification systems can be improved. Finally, by amplifying positively chirped pulses in negative dispersion fiber amplifiers, low noise wavelength tunable seed source via anti-Stokes frequency shifting can be obtained.

Abstract translation: 通过补偿光子晶体光纤脉冲压缩器中的偏振模色散以及色散，可以从全光纤啁啾脉冲放大系统获得高脉冲能量。 通过自相位调制在光纤放大器中产生三阶色散，可以补偿来自块状光栅脉冲压缩器的三阶色散，可以提高混合光纤/体积啁啾脉冲放大系统的脉冲质量。 最后，通过在负色散光纤放大器中正向啁啾脉冲放大，可以获得经过反斯托克斯频移的低噪声波长可调种子源。

公开(公告)号：WO2006057655A3

公开(公告)日：2007-04-26

申请号：PCT/US2005008626

申请日：2005-03-14

Applicant: IMRA AMERICA INC ,  FERMANN MARTIN E ,  IMESHEV GENNADY ,  CHO GYU CHOEN ,  LIU ZHENLIN ,  HARTER DONALD J

Inventor： FERMANN MARTIN E ,  IMESHEV GENNADY ,  CHO GYU CHOEN ,  LIU ZHENLIN ,  HARTER DONALD J

IPC: G02B6/02 ,  G02B6/26 ,  H01S3/00 ,  H01S3/067 ,  H04B10/00

CPC classification number: H01S3/0057 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/06741 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094007 ,  H01S3/1086 ,  H01S3/1301 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/2308 ,  H01S3/2316 ,  H01S3/302

Abstract: By compensating polarization mode-dispersion as well chromatic dispersion in photonic crystal fiber pulse compressors, high pulse energies can be obtained from all-fiber chirped pulse amplification systems. By inducing third-order dispersion in fiber amplifiers via self-phase modulation, the third-order chromatic dispersion from bulk grating pulse compressors can be compensated and the pulse quality of hybrid fiber/bulk chirped pulse amplification systems can be improved. Finally, by amplifying positively chirped pulses in negative dispersion fiber amplifiers, low noise wavelength tunable seed source via anti-Stokes frequency shifting can be obtained.

Abstract translation: 通过补偿光子晶体光纤脉冲压缩器中的偏振模色散以及色散，可以从全光纤啁啾脉冲放大系统获得高脉冲能量。 通过自相位调制在光纤放大器中产生三阶色散，可以补偿来自大容量光栅脉冲压缩器的三阶色散，可以提高混合光纤/体积啁啾脉冲放大系统的脉冲质量。 最后，通过在负色散光纤放大器中正向啁啾脉冲放大，可以获得经过反斯托克斯频移的低噪声波长可调种子源。

公开(公告)号：WO0186344A9

公开(公告)日：2002-11-21

申请号：PCT/NZ0100077

申请日：2001-05-08

Applicant: IMRA AMERICA INC ,  FERMANN MARTIN E ,  THOMSEN BENN C ,  KRUGLOV VLADIMAR I ,  DUDLEY JOHN M ,  HARVEY JOHN D

Inventor： FERMANN MARTIN E ,  THOMSEN BENN C ,  KRUGLOV VLADIMAR I ,  DUDLEY JOHN M ,  HARVEY JOHN D

IPC: G02F1/365 ,  G02F1/35 ,  H01S3/10 ,  H04B10/02 ,  H04B10/17 ,  H04B10/18 ,  G02F1/035 ,  H04B10/12

CPC classification number: H04B10/291

Abstract: The invention provides a method of communicating between two devices performed by transmitting a series of pulses over an optical medium between the first device and the second device, the method including amplifying the pulses in an optical amplifier having a characteristic generally described by the NLSE with gain to yield parabolically shaped pulses.

Abstract translation: 本发明提供了一种通过在第一设备和第二设备之间的光学介质上传送一系列脉冲而执行的两个设备之间的通信的方法，该方法包括放大具有通常由NLSE描述的特性的光放大器中的脉冲，该增益具有增益 产生抛物线形的脉冲。

公开(公告)号：EP1629575A4

公开(公告)日：2007-06-27

申请号：EP04751756

申请日：2004-05-24

Applicant: IMRA AMERICA INC

Inventor： FERMANN MARTIN E ,  IMESHEV GENNADY ,  HARTL INGMAR ,  HARTER DONALD J

IPC: H01S3/00 ,  G02B6/26 ,  H01S20060101 ,  H01S3/067 ,  H01S3/23

CPC classification number: H01S3/06754 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/0092 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/094007 ,  H01S3/10015

Abstract: By writing non-linear chirp into fiber Bragg gratings, greater control over dispersion compensation in CPA systems is obtained, such that, for example, the dispersion profile of the fiber Bragg grating and a bulk compressor may be matched. An iterative method of writing the fiber grating can reduce the group delay ripple to very low levels; and adaptive control of the fiber grating dispersion profile can further reduce these levels, while in addition offering greater acceptable yield in the manufacture of such gratings. Fiber Bragg gratings may be designed so as to provide customized pulse shapes optimized for various end uses, such as micromachining, for example, and may also be used to counteract gain-narrowing in a downstream amplifier.

公开(公告)号：EP2686732A4

公开(公告)日：2015-03-11

申请号：EP12758228

申请日：2012-03-08

Applicant: IMRA AMERICA INC

Inventor： FERMANN MARTIN E ,  HARTL INGMAR

IPC: G02F1/365 ,  G02B6/34 ,  G02F1/35

CPC classification number: G02F1/365 ,  G02F2001/3528 ,  H01S3/10

公开(公告)号：EP2248233A4

公开(公告)日：2015-02-25

申请号：EP09708385

申请日：2009-02-04

Applicant: IMRA AMERICA INC

Inventor： FERMANN MARTIN E ,  HARTL INGMAR ,  MARCINKEVICIUS ANDRIUS ,  DONG LIANG

IPC: H01S3/063 ,  H01S3/00 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/13 ,  H01S3/23

CPC classification number: H01S3/06737 ,  G02B6/02042 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/06704 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/06741 ,  H01S3/06745 ,  H01S3/06754 ,  H01S3/08059 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/094053 ,  H01S3/094076 ,  H01S3/10084 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/2333 ,  H01S3/2383

Abstract: High power parallel fiber arrays for the amplification of high peak power pulses are described. Fiber arrays based on individual fiber amplifiers as well as fiber arrays based on multi-core fibers can be implemented. The optical phase between the individual fiber amplifier elements of the fiber array is measured and controlled using a variety of phase detection and compensation techniques. High power fiber array amplifiers can be used for EUV and X-ray generation as well as pumping of parametric amplifiers.

公开(公告)号：EP2656455A4

公开(公告)日：2015-01-07

申请号：EP11851371

申请日：2011-12-14

Applicant: IMRA AMERICA INC ,  UNIV LELAND STANFORD JUNIOR

Inventor： FERMANN MARTIN E ,  JIANG JIE ,  PHILLIPS CHRISTOPHER ,  FEJER MARTIN M

IPC: H01S3/10

CPC classification number: G02F1/353 ,  G02F2001/3548 ,  G02F2201/02 ,  G02F2201/16 ,  G02F2203/11 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/06754 ,  H01S3/1608 ,  H01S3/1616

公开(公告)号：EP1658663A4

公开(公告)日：2009-11-11

申请号：EP04786591

申请日：2004-08-27

Applicant: IMRA AMERICA INC

Inventor： FERMANN MARTIN E ,  HARTL INGMAR ,  IMESHEV GENNADY ,  PATEL RAJESH S

IPC: G02F1/35 ,  B23K26/36 ,  B23K26/40 ,  G02F1/37 ,  G02F1/39 ,  H01S3/00 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/115

CPC classification number: G02F1/39 ,  B23K26/0622 ,  B23K26/0624 ,  G02F2001/3548 ,  G02F2001/392 ,  H01S3/0057 ,  H01S3/0604 ,  H01S3/06704 ,  H01S3/06725 ,  H01S3/06741 ,  H01S3/06758 ,  H01S3/08045 ,  H01S3/094007 ,  H01S3/115 ,  H01S3/2325 ,  H01S2301/03

Abstract: A fiber-based source for high-energy picosecond and nanosecond pulses is described, By mit-nimizing nonlinear energy limitations in fiber amplifiers, pulse energies close to the damage threshold of optical fibers can be generated. The implementation of optimized seed sources in conjunction with amplifier chains comprising at least one nonlinear fiber amplifier allows for the generation of near bandwidth-limited high-energy picosecond pulses. Optimized seed sources for high-energy pulsed fiber amplifiers comprise semiconductor lasers as well as stretched mode locked fiber lasers. The maximization of the pulse energies obtainable from fiber amplifiers further allows for the generation of high-energy ultraviolet and IR pulses at high repetition rates.