公开(公告)号：JP2009158983A

公开(公告)日：2009-07-16

申请号：JP2009096761

申请日：2009-04-13

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 ,  HARTER DONALD J DR

IPC: G02B6/02 ,  H01S3/098 ,  G02B6/024 ,  G02B6/036 ,  G02B6/44 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/10

CPC classification number: H01S3/06708 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/094019 ,  H01S3/1118

Abstract: PROBLEM TO BE SOLVED: To provide a passively mode-locked fiber laser capable of generating linearly chirped high power parabolic pulses. SOLUTION: The passively mode-locked fiber laser for generating short light pulses, comprises a laser resonator having intra-cavity dispersion and a rare-earth-doped gain medium that is provided in the laser resonator, has positive dispersion of intracavity dispersion and operates so as to generate a value of intra-cavity self-phase modulation larger than π. The band width of an intra-cavity light pulse changes during propagation in the laser resonator. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供能够产生线性啁啾大功率抛物线脉冲的被动锁模光纤激光器。 解决方案：用于产生短光脉冲的被动锁模光纤激光器包括具有腔内色散的激光谐振器和设置在激光谐振器中的稀土掺杂增益介质，具有腔内分散的正色散 并且操作以产生大于π的腔内自相位调制值。 腔内光脉冲的带宽在激光谐振器中传播期间改变。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008098676A

公开(公告)日：2008-04-24

申请号：JP2007340748

申请日：2007-12-28

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

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

IPC: H01S3/06

Abstract: PROBLEM TO BE SOLVED: To provide a method of stabilizing a short pulse fiber laser which reduces a timing jitter caused by a variation in environmental condition such as vibration, air disturbance, a change in temperature to a minimum. SOLUTION: The method of stabilizing a short pulse fiber laser has a segregating step which segregates the fiber lasers 210 and 220 from an outside environment, a winding step which winds the fiber lasers 210 and 220 around a fiber spool 280, and an operating step which operates the fiber lasers 210 and 220 while the fiber lasers 210 and 220 are wound around the fiber spool 280. The fiber lasers 210 and 220 are wound around the fiber spool 280 and segregated from the outside environment, and therefore become free of influences of the variation in environmental condition and are stabilized. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种稳定短脉冲光纤激光器的方法，其减少由诸如振动，空气干扰，温度变化等环境条件的变化引起的定时抖动。 解决方案：稳定短脉冲光纤激光器的方法具有将光纤激光器210和220从外部环境分离的偏析步骤，将光纤激光器210和220缠绕在光纤线轴280周围的卷绕步骤，以及 在纤维激光器210和220缠绕在纤维卷轴280周围的同时操作光纤激光器210和220的操作步骤。光纤激光器210和220围绕光纤卷轴280缠绕并与外部环境分离，并因此变得没有 环境变化的影响稳定。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008062263A

公开(公告)日：2008-03-21

申请号：JP2006241654

申请日：2006-09-06

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

Inventor： BOVATSEK JAMES MICHAEL ,  ARAI ALAN Y ,  YOSHINO FUMIYO

IPC: B23K26/00 ,  B23K26/32 ,  B29C65/16 ,  C03B23/20 ,  C03B33/09 ,  C04B41/91

CPC classification number: B29C65/1638 ,  B23K26/0057 ,  B29C65/1616 ,  B29C65/1619 ,  B29C65/1635 ,  B29C65/1648 ,  B29C65/1654 ,  B29C65/1696 ,  B29C66/1122 ,  B29C66/43 ,  B29C66/71 ,  B29C66/73366 ,  B29C66/836 ,  B29K2995/0026 ,  B29K2033/12 ,  B29K2069/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for scribing or welding transparent materials. SOLUTION: A method for scribing transparent materials uses ultrashort laser pulses to create multiple scribe features with a single pass of the laser beam across the material, with at least one of the scribe features being formed below the surface of the material. This enables clean breaking of transparent materials. A method for welding transparent materials uses ultrashort laser pulses to create a bond through localized heating. The ultrashort pulse duration causes nonlinear absorption of the laser radiation, and the high repetition rate of the laser causes pulse-to-pulse accumulation of heat within the materials. The laser is focused near the interface of the materials, generating a high energy fluence at the region to be welded. This minimizes damage to the rest of the material and enables fine weld lines. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于划线或焊接透明材料的方法。 解决方案：一种用于划线透明材料的方法使用超短激光脉冲来产生多个刻划特征，其中激光束通过材料的单次通过，其中至少一个划线特征形成在材料表面下方。 这样可以清洁透明材料。 用于焊接透明材料的方法使用超短激光脉冲通过局部加热产生粘结。 超短脉冲持续时间导致激光辐射的非线性吸收，并且激光器的高重复率导致材料内的脉冲 - 脉冲积累的热量。 激光聚焦在材料界面附近，在待焊接的区域产生高能量通量。 这可以最大限度地减少对其余材料的损坏，并能实现细焊缝。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007288141A

公开(公告)日：2007-11-01

申请号：JP2007024358

申请日：2007-02-02

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

Inventor： BIN RIU ,  ZHENDONG HU ,  YONG CHE ,  YUZURU UEHARA

IPC: H01L21/363 ,  C23C14/28 ,  G02B1/10 ,  H01S3/00

CPC classification number: C23C14/22 ,  C23C14/083 ,  C23C14/28

Abstract: PROBLEM TO BE SOLVED: To provide a p-type semiconductor zinc oxide (ZnO) film and a manufacturing method of this film. SOLUTION: A p-type ZnO material is deposited by using a pulsed laser deposition method (PLD). In this method, a pulsed laser beam is focused on a solid target comprising a mixture of a compound containing both Li and P with ZnO. By the high power density of the focused laser pulse, the material on the target surface is ablated. Then, plasma is formed, and this is deposited on the surface of the substrate. Moreover, there is described a pulsed laser deposition process using a transparent substrate including a pulsed laser source, a substrate that is transparent to the wavelength of the pulsed laser, and a multi-target system. The optical path of the pulsed laser is arranged in such a manner that the pulsed laser is incident from the back of the substrate to pass through the substrate and is focused on the target. By translating the substrate toward the target, the attachment of a micro pattern using the root of an ablation plume is permitted. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 待解决的问题：提供一种p型半导体氧化锌（ZnO）膜及其制造方法。 解决方案：使用脉冲激光沉积法（PLD）沉积p型ZnO材料。 在该方法中，将脉冲激光束聚焦在包含Li和P两者的化合物与ZnO的混合物的固体靶上。 通过聚焦激光脉冲的高功率密度，目标表面上的材料被烧蚀。 然后，形成等离子体，并将其沉积在基板的表面上。 此外，描述了使用包括脉冲激光源，对于脉冲激光的波长透明的衬底的多透射衬底和多目标系统的脉冲激光沉积工艺。 脉冲激光器的光路布置成使得脉冲激光从衬底的背面入射以通过衬底并聚焦在靶上。 通过将衬底平移到靶，允许使用消融羽的根部附着微图形。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007221173A

公开(公告)日：2007-08-30

申请号：JP2007146684

申请日：2007-06-01

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 ,  HARTER DONALD J DR

IPC: H01S3/10 ,  G02F1/37 ,  H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/23 ,  H04B10/02 ,  H04B10/18

CPC classification number: H01S3/067 ,  G02F1/37 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/06745 ,  H01S3/06754 ,  H01S3/08022 ,  H01S3/094003 ,  H01S3/235

Abstract: PROBLEM TO BE SOLVED: To generate a pulse energy having a peak intensity larger than those achieved with a single mode (SM) fiber, by increasing a capacity for accumulating energy in an optical fiber amplifier before starting undesirable non-linearity and gain saturation. SOLUTION: The optical amplifier has a fiber oscillator 10 serving as a laser source, which generates an input beam having a mode close to diffraction limit; a multiple mode fiber amplifier 12; a mode converter 14; and a pump source 20. The mode converter 14 receives an input beam, converts a mode of the input beam so as to conform to a basic mode of the multiple mode fiber amplifier 12, and generates a mode-converted input beam to be inputted to the multiple mode fiber amplifier 12. The pump source 20 optically pumps the multiple mode fiber amplifier 12, and generates a strong output beam which is intrinsically amplified by the basic mode. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了产生具有比单模（SM）光纤实现的峰值强度大的峰值强度的脉冲能量，通过在开始不期望的非线性和增益之前增加在光纤放大器中累积能量的能力 饱和。 解决方案：光放大器具有用作激光源的光纤振荡器10，其产生具有接近衍射极限的模式的输入光束; 多模光纤放大器12; 模式转换器14; 模式转换器14接收输入光束，转换输入光束的模式以符合多模光纤放大器12的基本模式，并生成输入到模式转换的输入光束 多模光纤放大器12.泵浦源20对多模光纤放大器12进行光泵浦，并产生本质上由基本模式放大的强输出光束。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2004088120A

公开(公告)日：2004-03-18

申请号：JP2003354301

申请日：2003-10-14

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

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

IPC: H01S3/10 ,  G01B11/24 ,  G01M11/00 ,  G01P3/80 ,  G01R13/34 ,  G01S7/48 ,  G01S7/484 ,  G01S7/486 ,  G01S17/10 ,  G01S17/50 ,  H01S3/02 ,  H01S3/06 ,  H01S3/07 ,  H01S3/098 ,  H01S3/105 ,  H01S3/13 ,  H01S3/139 ,  H01S3/23

CPC classification number: H01S3/2383 ,  G01P3/806 ,  G01R13/347 ,  G01S7/484 ,  G01S7/486 ,  G01S7/497 ,  G01S17/107 ,  G01S17/50 ,  H01S3/1398

Abstract: PROBLEM TO BE SOLVED: To reduce to the minimum timing jitter caused by variations in environmental condition such as vibrations, disturbance of air, change in temperature. SOLUTION: Two lasers are configured by using the an identical component in an identical container so as to be pumped by the same pump laser while maintaining a state in which the two lasers can be controlled independently. In particular, in the case of a fiber laser, two fibers are wound together around the same shaft (spool). COPYRIGHT: (C)2004,JPO

公开(公告)号：JPH10333194A

公开(公告)日：1998-12-18

申请号：JP11480498

申请日：1998-04-24

Applicant: IMRA AMERICA INC

Inventor： GALVANAUSKAS ALMANTAS DR ,  HARTER DONALD J DR

IPC: G02F1/35 ,  G02F1/377 ,  H01S3/00 ,  H01S3/10

Abstract: PROBLEM TO BE SOLVED: To provide the chirped pulse amplifying device which is simple, inexpensive, and small-sized. SOLUTION: The limits of maximum pulse energy can be evaded by arranging quasi-phase synchronous(QPM) crystal 40 with chirped cycles. The crystal 40 generates a secondary higher harmonic in a single element and pulses expanded by a chirped Bragg grating 20 can be compressed. This constitution makes the device simple and small-sized and the energy of obtained extremely-short pulses substantially increases. Further, the use of this QPM crystal 40 makes possible the variable compensation of a linear and a nonlinear frequency chirp of the secondary higher harmonic. This property is used to make it possible to design the chirp pulse amplifying device which is inexpensive, small-sized, robust, and simple and outputs extremely short pulses.

公开(公告)号：JPH09167869A

公开(公告)日：1997-06-24

申请号：JP23535696

申请日：1996-09-05

Applicant: IMRA AMERICA INC

Inventor： MAACHIN II FUAAMAN ,  DONARUDO JIEI HAATAA

IPC: H01S3/098 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094

Abstract: PROBLEM TO BE SOLVED: To enable a mode-locked double clad fiber laser excited by a wide band diode laser array to generate pulses of the order of picoseconds or femtoseconds. SOLUTION: 560fsec pulses of maximum power 40pJ and wavelength 1560nm are generated by an Er/Yb fiber oscillator 101. 170fsec pulses of 50pJ can be generated in a cavity which is compensated for dispersion. A negative chirp fiber Bragg grating 105 is added so as to improve a cavity in dispersion controllability, whereby pulses of maximum power 1nJ and width 3psec can be generated. A saturated absorber 118 is used to make an oscillator start generating pulses, and a nonlinear polarization development is used for shaping pulses in a normal state.

公开(公告)号：JPH0921698A

公开(公告)日：1997-01-21

申请号：JP18430496

申请日：1996-05-28

Applicant: IMRA AMERICA INC

Inventor： MAAKU PII BENDETSUTO

IPC: G01J1/02 ,  G01N21/39 ,  G01N21/41 ,  G02B6/12 ,  H01S3/07 ,  H01S3/08

Abstract: PROBLEM TO BE SOLVED: To provide an optical sensor, which outputs a sufficiently large output power so that measurement can be readily performed even with an integral type optical sensor, and can output further accurate result without the requirements for through calibration and the highly controlled environment. SOLUTION: A waveguide 18 comprising a base material 16, which is doped with a rare earth element, is included in a device 12 of an integral type optical sensor. The ray, which is propagating along the waveguide 18, excites the element, and the element emits light. Thus, the total amount of the light propagating in the wavelength 18 is increased. Since the waveguide 18 itself acts as the laser, the change in optical characteristics of a material under analysis forming a part of a laser cavity affects on the operation of the laser. Therefore, the wavelength or the power of the light generated from the laser is changed directly in correspondence with the change in concentration of the material to be sensed. The change is emphasized by the intrinsic gain characteristic of the laser medium.

公开(公告)号：JPH0846276A

公开(公告)日：1996-02-16

申请号：JP10017895

申请日：1995-03-31

Applicant: IMRA AMERICA INC

Inventor： ARUMANTESU GARUBANASUKASU

IPC: H01S3/098 ,  H01S3/00 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/1055 ,  H01S3/117 ,  H01S3/17 ,  H01S3/23 ,  H01S5/00 ,  H01S5/06 ,  H01S3/103 ,  H01S3/18

Abstract: PURPOSE: To improve reliability and to reduce cost by amplifying a pulse energy by a plurality of stages of amplifiers to generate an amplified pulse energy. CONSTITUTION: A compact system 100 includes a means for amplifying the peak output of a pulse energy. A peak output amplification means includes a means for amplifying a pulse energy that is indicated as a two-stage erbium doping treatment fiber amplifier 1 10 and a means for compressing a pulse energy that is amplified by overlapping wavelength bands indicated as a lattice body compressor 112. The two-stage erbium doping treatment fiber amplifier 110 includes a first-stage energy amplifier 114 and a second-stage energy amplifier 116. Then, a variable diode laser 102 is generated a nano-order chirp pulse existing in the erbium doping treatment fiber is amplified, thus obtaining an ultra-short pulse with a high energy without causing the saturation energy breakdown of an amplifier.