公开(公告)号：JP2008135673A

公开(公告)日：2008-06-12

申请号：JP2007066456

申请日：2007-03-15

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： SHAH LAWRENCE

IPC: H01S3/06

CPC classification number: H01S3/0057 ,  B23K26/0624 ,  G02B6/02138 ,  G02B6/02142 ,  G02B6/02147 ,  G02B6/13

Abstract: PROBLEM TO BE SOLVED: To provide a laser optical source for producing a pulse laser beam comprising a plurality of ultrashort optical pulses whose repetition frequencies are variable. SOLUTION: The laser optical source comprises a fiber oscillator for outputting an optical pulse and a pulse stretcher arranged in order to receive the optical pulse. The optical pulse has an optical pulse width. The pulse stretcher has dispersion for expanding the optical pulse width to produce an extended optical pulse. The laser optical source further comprises a fiber amplifier arranged in order to receive the extended optical pulse. The fiber optical amplifier has a profit for amplifying the extended optical pulse. The laser optical source comprises a grating compressor which has dispersion for reducing the optical pulse width and which can be automatically adjusted. The grating compressor automatically adjusts the dispersion for different repetition frequencies. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 解决的问题：提供一种激光光源，用于产生包括重复频率可变的多个超短光脉冲的脉冲激光束。 解决方案：激光光源包括用于输出光脉冲的光纤振荡器和布置成接收光脉冲的脉冲放大器。 光脉冲具有光脉冲宽度。 脉冲展宽器具有用于扩展光脉冲宽度以产生扩展光脉冲的色散。 激光光源还包括布置为接收扩展光脉冲的光纤放大器。 光纤放大器有利于扩展扩展光脉冲。 激光光源包括光栅压缩器，该光栅压缩器具有用于减小光脉冲宽度的色散，并可自动调节。 光栅压缩机自动调节不同重复频率的色散。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008122985A

公开(公告)日：2008-05-29

申请号：JP2008003335

申请日：2008-01-10

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： FERMANN MARTIN E ,  GALVANAUSKAS ALMANTAS DR ,  HARTER DONALD J DR

IPC: G02F1/35 ,  G02F1/37 ,  G02F1/377 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/109 ,  H01S3/16 ,  H01S3/23 ,  H01S3/30

CPC classification number: H01S3/06754 ,  G02F1/37 ,  G02F2001/3542 ,  G02F2001/3548 ,  H01S3/06712 ,  H01S3/06758 ,  H01S3/1603 ,  H01S3/2333 ,  H01S3/302 ,  H01S2301/085

Abstract: PROBLEM TO BE SOLVED: To provide a means which generates a high power optical pulse of femtosecond level. SOLUTION: A high power optical pulse-generating device has a fiber oscillator 10 which generates signal light; an amplifying fiber 11 which has nonlinear phase delay and receives, amplifies and compresses the signal light, the amplifying fiber acting as a Soliton Raman compressor (SRC); and a PPLN 20 (periodic polling LiNbO 3 ) which is a frequency converter which frequency-converts an amplified optical pulse into a high power optical pulse. A dispersion compensating fiber 18 compensates for the dispersion. The optical pulse is reflected by a Faraday rotation mirror (FRM) 19 to form a double-path form. The signal light receives energy from the pump light fed from a pump 16 and is amplified and compressed, and a high power pulse of femtosecond level is obtained, at a frequency at which frequency conversion is performed by the PPLN frequency convertor 20. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供产生飞秒级高功率光脉冲的装置。 解决方案：高功率光脉冲发生装置具有产生信号光的光纤振荡器10; 具有非线性相位延迟并接收，放大和压缩信号光的放大光纤11，作为Soliton拉曼压缩机（SRC）的放大光纤; 以及将放大的光脉冲频率转换为高功率​​光脉冲的频率转换器的PPLN 20（周期轮询LiNbO 3 ）。 色散补偿光纤18补偿色散。 光脉冲由法拉第旋转镜（FRM）19反射以形成双路形式。 信号光从泵16接收来自泵浦光的能量，并被放大和压缩，并且在PPLN变频器20执行频率转换的频率处获得飞秒级的高功率脉冲。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007310135A

公开(公告)日：2007-11-29

申请号：JP2006139054

申请日：2006-05-18

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： DONG LIANG ,  WONG WILLIAM ,  MARTIN E FERMANN

IPC: G02B6/00 ,  G02B6/032 ,  H01S3/06

Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber which propagates lower order modes while limiting high order modes. SOLUTION: There is provided an optical waveguide like a large core multi-mode optical fiber. This multi-mode optical fiber has a core and a clad area. This optical fiber includes a matrix material having two or more holes, and the two or more holes are in the clad area to form a border on the core area. The matrix includes silica glass, and the holes may be airholes. There is provided holey rods. The rods and optical fibers may be used in many optical systems such as an optical amplification systems, lasers, short pulse generators and Q-switch lasers. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供在限制高阶模式的同时传播低阶模式的光纤。

解决方案：提供像大型多模光纤一样的光波导。 该多模光纤具有芯和覆层区域。 该光纤包括具有两个或更多个孔的基体材料，并且两个或多个孔在包层区域中以在芯部区域上形成边界。 基质包括石英玻璃，孔可以是孔。 提供多孔棒。 棒和光纤可用于诸如光放大系统，激光器，短脉冲发生器和Q开关激光器的许多光学系统中。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2004048020A

公开(公告)日：2004-02-12

申请号：JP2003203180

申请日：2003-07-29

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： GALVANAUSKAS ALMANTAS DR ,  HARIHARAN ANAND DR ,  HARTER DONALD J DR

IPC: G02B6/00 ,  G02F1/35 ,  G02F1/37 ,  H01S3/00 ,  H01S3/06 ,  H01S3/07 ,  H01S3/098 ,  H01S3/10 ,  H01S3/107 ,  H01S3/108 ,  H01S3/16 ,  H01S3/23

CPC classification number: H01S3/2316 ,  H01S3/0057 ,  H01S3/235

Abstract: PROBLEM TO BE SOLVED: To provide an amplifier for a short optical pulse being small in size, having increased strength, enhanced reliability, and excellent performance for cost effectiveness. SOLUTION: The amplifier for a short optical pulse has miniaturized size, has increased strength and reliability, and has enhanced cost performance. The present invention is particularly effective for a chirped pulse amplification system in which a pulse is stretched, amplified, and re-compressed. A fiber and a bulk amplifier are used for the amplification of the pulse. A crystal for doubling the frequency can be inserted in the optical path of the pulse between the two amplifiers. Although a laser amplifier is pumped by a laser of the same material as that of the laser amplifier, the laser for the pumping and the laser for the amplification are operated under different conditions. COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：为了提供尺寸小的短光脉冲放大器，具有增加的强度，增强的可靠性和优异的性价比。

解决方案：用于短光脉冲的放大器具有小型化，具有增强的强度和可靠性，并且具有增强的成本性能。 本发明对于其中脉冲被拉伸，放大和重新压缩的啁啾脉冲放大系统特别有效。 光纤和体放大器被用于脉冲放大。 可以将频率加倍的晶体插入两个放大器之间的脉冲的光路中。 虽然激光放大器是通过与激光放大器相同材料的激光器来泵浦的，但用于激光的激光器和用于放大的激光器在不同条件下运行。 版权所有（C）2004，JPO

公开(公告)号：JP2000228550A

公开(公告)日：2000-08-15

申请号：JP25409699

申请日：1999-09-08

Applicant: IMRA AMERICA INC

Inventor： JIANG MIN ,  HARTER DONALD J DR ,  SUCHA GREGG D DR ,  FERMANN MARTIN E

IPC: G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/098 ,  H01S3/106 ,  H01S3/11 ,  H01S3/16

Abstract: PROBLEM TO BE SOLVED: To suppress a Q-switch pulse by disposing a first and a second reflectors on the counterposed ends of a gain medium, disposing a third reflector apart from the first reflector in a resonator, and further disposing a saturable absorber between Fabry-Perot etalons. SOLUTION: A first reflector 42a and a second reflector 38a for forming an optical resonator 20a are disposed on the counterposed ends of a fiber gain medium 10a such as an Er-doped light amplifying fiber of an integrated saturable absorber/optical power limiter. Then, a beam splitter 64a as a third reflector apart from the first reflector 42a is disposed in the optical resonator 20a to form a Fabry-Perot etalon nearly resonant at laser frequency. A saturable absorber 34a for inducing a mode locked laser pulse is disposed between the Fabry-Perot etalons.

公开(公告)号：JPH11195825A

公开(公告)日：1999-07-21

申请号：JP30289898

申请日：1998-10-23

Applicant: IMRA AMERICA INC

Inventor： YUZURU UEHARA ,  HOHEI W HIMENESU ,  STOCK MICHELLE L DR ,  FERMANN MARTIN E

IPC: H01S3/06 ,  G02B6/36 ,  H01S3/067

Abstract: PROBLEM TO BE SOLVED: To provide a small-sized laser device which has both a laser oscillator to output optical pulses and a laser amplifier. SOLUTION: A small-sized fiber laser device has a laser oscillator connected to a laser beam source 88 for generating optical pulses and a laser amplifier connected to the laser oscillator for amplifying the generated optical pulses. The laser oscillator has a first optical fiber 42 which connects bulk parts to the laser beam source 88, and the laser amplifier 14 has a second optical fiber 62 which connects the bulk parts to a laser light source 92. The first and the second fibers 42 and 62 are wound around a common holder. A fiber tray is connected to a fiber bench, and the bulk parts of the laser oscillator and the laser amplifier are attached to the fiber bench.

公开(公告)号：JPH1167236A

公开(公告)日：1999-03-09

申请号：JP17277198

申请日：1998-06-19

Applicant: IMRA AMERICA INC

Inventor： DELNICK FRANK M DR

IPC: H01M6/48 ,  B41J2/01 ,  H01M2/36 ,  H01M4/04

Abstract: PROBLEM TO BE SOLVED: To quickly, accurately and quantitatively distribute an electrolyte in pores with noncontact with the sealing surface or connecting surface of a battery by printing the electrolyte on the surface of an electrode, a separator, or two layers of electrode/separator by an ink jet printing method. SOLUTION: An ink jet head 300 has a plurality of nozzles 306, a plurality of printed porous two layers are fed under the ink jet head 300 in the arrow direction 1. A print head is preferably positioned 1-5 mm over the passing through two layers 204. Two layer 204 has a polymer gasket 212 whose periphery is printed, heated, and sealed. The ink jet head 300 supplies electrolyte drops 215A on the two layers 204 without polluting the surface 214 of the gasket 212, and pulse oscillation is conducted to form mother drops 215. The electrolyte drops 215A act like image forming pixel, and an image drawn with dots is formed on the surface of the two layer body 204.

公开(公告)号：JPH10333197A

公开(公告)日：1998-12-18

申请号：JP11483298

申请日：1998-04-24

Applicant: IMRA AMERICA INC ,  UNIV LELAND STANFORD JUNIOR

Inventor： GALVANAUSKAS ALMANTAS DR ,  MARK A ABOLL ,  MARTIN M FIGGIE ,  HARTER DONALD J DR

IPC: G02F1/37 ,  H01S3/00 ,  H01S3/23

Abstract: PROBLEM TO BE SOLVED: To actualize the size reduction of the devices, the simplification of designing, low loss, high efficiency, wide bandwidth, controllability of dispersion characteristics, etc., as compared with a convertional dispersion delay line used for an extremely-short pulse system. SOLUTION: This extremely-short pulse amplifying device uses a chirp quasi- phase synchronous (QPM) grating 12 as a dispersion delay line for expanding extremely-short pulses. The QPM grating 12 which varies in cycle in the propagation direction of a beam generates a secondary higher harmonic at the same time. In general, the output of this secondary higher harmonic is modulated together with the amplitude and phase. The QPM grating 12 also expands the secondary higher harmonic of an input pulse of basic wavelength. In general, the periodic QPM grating 12 can efficiently generate secondary higher harmonic pulses which are optionally shaped.

公开(公告)号：JPH10221448A

公开(公告)日：1998-08-21

申请号：JP1569197

申请日：1997-01-29

Applicant: IMRA AMERICA INC

Inventor： SALVATORE F NATY

IPC: G01B11/00 ,  G01C3/06 ,  G01S17/08

Abstract: PROBLEM TO BE SOLVED: To detect the distances to a plurality of targets with high resolution in real time by monitoring the number of reflected pulses produced in response to an emitted pulse and stopping the operation of a counting means when a prescribed number of reflected pulses is received. SOLUTION: When a pulse 128 is emitted from a vehicle 140, pulses 132, 134, 136, and 138 are reflected from vehicles 142, 144, 146, and 148 and the reflected pulses are used for determining the distances to the target vehicles 142, 144, 146, and 148 from the vehicle 140. Namely, a means which determines the time lag between the emitted pulse 128 and one of the reflected pulses 132, 134, 136, and 138 is provided. The determining means is composed of a clock generator which generates a clock pulse and a counter (counting means) which counts the clock pulse. A control means monitors the number of the reflected pulses produced in response to the emitted pulse and stops the operation of the counter when a prescribed number of reflected pulses is received.

公开(公告)号：JPH10186424A

公开(公告)日：1998-07-14

申请号：JP34158497

申请日：1997-12-11

Applicant: IMRA AMERICA INC

Inventor： STOCK MICHELLE L DR ,  BENDETT MARK P DR ,  GALVANAUSKAS ALMANTAS DR ,  HARTER DONALD J DR ,  SUCHA GREGG D DR

IPC: G02F1/35 ,  G02B6/34 ,  H01S3/00 ,  H04B10/18

Abstract: PROBLEM TO BE SOLVED: To provide a means transmitting a very short light pulse with a high peak power to a required point in an optical device. SOLUTION: This very short light pulse transmitting device is provided with a pulse expander 20 receiving the super-short light pulse with a high peak power and expanding its pulse width and an optical fiber 30 transmitting the light pulse over a required distance and having the dispersion compensating other dispersion so that the light pulse is re-compressed sufficiently in the required point in the optical device 50. The pulse width of the light pulse is expanded by the expander 20, and a chirp light pulse with a low peak power is formed. Thus pulse whose dispersion is compensated while it is transmitted through the optical fiber 30, and is re-compressed by the optical fiber 30 or a compressor 40 to be transmitted to the optical device 50. Since the peak power in the optical fiber 30 is small, the super-short light pulse hardly by affected by a nonlinear effect.