公开(公告)号：US06751010B1

公开(公告)日：2004-06-15

申请号：US10420731

申请日：2003-04-23

申请人： Dale A. Richter

发明人： Dale A. Richter

IPC分类号： G02F139

CPC分类号： G02F1/39 ,  G02F2001/3542 ,  G02F2203/15

摘要： A low-finesse, tri-etalon optical parametric oscillator includes an optical cavity bounded by two coupling mirrors, and a narrow-linewidth pump laser which supplies pump energy to the optical cavity at a pump wavelength. A pair of walk-off compensated, non-linear optical crystals (but not limited to walk-off compensated) is disposed with the cavity and converts energy at the pump wavelength to energy at longer signal and idler wavelengths. The mirrors are configured such that each of the three beams (pump, signal and idler) is approximately 70% to 100% reflected at one end of the cavity and approximately 10% to 30% reflected at the other end of the cavity. This configuration causes partial resonance of each of the beams and generates an etalon effect which enhances the fluence in the leading and trailing edges of pulses in the cavity, thereby enhancing the energy conversion efficiency from the pump wavelength to the signal and idler wavelengths.

摘要翻译： 低精度三标准光学参量振荡器包括由两个耦合反射镜限定的光学腔，以及窄泵浦激光器，其以泵浦波长向泵浦泵浦能量提供泵浦能量。 一对走线补偿的非线性光学晶体（但不限于取消补偿）与空腔一起布置，并将泵浦波长处的能量转换为更长信号和惰性波长的能量。 反射镜被配置成使得三个光束（泵，信号和惰轮）中的每一个在空腔的一端处被反射约70％至100％，并且在空腔的另一端处反射约10％至30％。 该配置引起每个光束的部分谐振，并且产生标准具效应，其增强腔中脉冲的前沿和后沿的注量，从而增强从泵波长到信号和惰轮波长的能量转换效率。

公开(公告)号：US06636343B1

公开(公告)日：2003-10-21

申请号：US09896575

申请日：2001-06-29

申请人： Bruce Richman

发明人： Bruce Richman

IPC分类号： G02F139

CPC分类号： G02F1/37 ,  G02F1/3544 ,  G02F1/39 ,  G02F2203/04

摘要： Achromatic phase-matching (APM) is used for efficiently multiplying the frequency of broad bandwidth light by using a nonlinear optical medium comprising a second-harmonic generation (SHG) crystal and stationary optical elements whose configuration, properties, and arrangement have been optimized to match the angular dispersion characteristics of the SHG crystal to at least the third order. These elements include prisms and diffraction gratings for directing an input light beam onto the SHG crystal such that each ray wavelength is aligned to match the phase-matching angle for the crystal at each wavelength of light to at least the third order and such that every ray wavelength overlap within the crystal.

摘要翻译： 消色差相位匹配（APM）用于通过使用包括二次谐波产生（SHG）晶体的非线性光学介质和其配置，特性和布置已被优化以匹配的固定光学元件来有效地乘以宽带宽光的频率 SHG晶体的角度色散特性至少为三阶。 这些元件包括用于将输入光束引导到SHG晶体上的棱镜和衍射光栅，使得每个射线波长被对准以将每个波长的晶体的相位匹配角度匹配至至少三阶，并且使得每个射线 晶体内的波长重叠。

公开(公告)号：US06441949B1

公开(公告)日：2002-08-27

申请号：US09758327

申请日：2001-01-10

申请人： Thomas A. Reynolds ,  Theodore Alekel ,  Douglas A. Keszler

发明人： Thomas A. Reynolds ,  Theodore Alekel ,  Douglas A. Keszler

IPC分类号： G02F139

CPC分类号： C01B35/12 ,  G02F1/3551

摘要： Provided are nonlinear optical materials that can be used for a number of optical applications including, but not limited to, second harmonic generation (SHG), sum-frequency generation (SFG), difference-frequency generation (DFG) and optical parametric amplification (OPA). The nonlinear optical materials of the present invention are formed from divalent metal ions and borate anions to form a complex borate framework, with the B:O ratio of the framework being about 10:17. The present NLO materials generally satisfy Formula 1: Ba2−xMxB10O17  Formula 1 wherein M is a divalent metal ion; wherein x ranges from 0 to 0.3. M of Formula 1 is independently selected from Groups IIA and IIB metals, preferably strontium, barium, and lead. Other charged species that charge balance the B10O17 species may also be used to form compounds satisfying Formula 1 as long as these compounds also exhibit NLO properties. Examples of nonlinear optical materials satisfying Formula 1 include, but are not limited to, Ba2B10O17, Ba1.8Sr0.2B10O17, and Ba1.85Pb0.15B10O17.

摘要翻译： 提供了可以用于许多光学应用的非线性光学材料，包括但不限于二次谐波产生（SHG），和频产生（SFG），差分频率产生（DFG）和光学参量放大（OPA ）。 本发明的非线性光学材料由二价金属离子和硼酸根阴离子形成以形成复杂的硼酸盐骨架，其框架的B:O比约为10:17。 本发明的NLO材料通常满足式1：其中M是二价金属离子; 其中x的范围为0至0.3。 式1的M独立地选自IIA族和IIB族金属，优选锶，钡和铅。 电荷平衡B10O17物质的其他带电物质也可用于形成满足式1的化合物，只要这些化合物也表现出NLO性质即可。 满足式1的非线性光学材料的实例包括但不限于Ba2B10O17，Ba1.8Sr0.2B10O17和Ba1.85Pb0.15B10O17。

公开(公告)号：US06833945B2

公开(公告)日：2004-12-21

申请号：US10045814

申请日：2002-01-15

申请人： Joseph M. Fukumoto

发明人： Joseph M. Fukumoto

IPC分类号： G02F139

CPC分类号： G02F1/3551 ,  G02F1/3553 ,  G02F1/39 ,  G02F2201/16 ,  G02F2201/17 ,  G02F2201/18 ,  G02F2201/34 ,  G02F2203/05 ,  G02F2203/58 ,  H01S3/0809

摘要： An arrangement (10) for efficiently generating tunable pulsed laser output at 8-12 microns. The arrangement (10) includes a laser (12), a first optical parametric oscillator (14) of unique design, and a second optical parametric oscillator (22). The first oscillator (14) is constructed with an energy shifting crystal (20) and first and second reflective elements (16) and (18) disposed on either side thereof. Energy from the laser (12) at a first wavelength is shifted by the crystal and output at a second wavelength. The second wavelength results from a secondary process induced by a primary emission of energy at a third wavelength, the third wavelength resulting from a primary process generated from the first wavelength in the crystal. Mirror coatings are applied on the reflective elements (16 and/or 18) for containing the primary emission and enhancing the secondary process. The second optical parametric oscillator (22) then shifts the energy output by the first OPO (14) at the second wavelength to the desired fourth wavelength.

摘要翻译： 一种用于有效地产生8-12微米可调脉冲激光输出的装置（10）。 该装置（10）包括激光器（12），独特设计的第一光学参量振荡器（14）和第二光学参量振荡器（22）。 第一振荡器（14）由能量转换晶体（20）和设置在其两侧的第一和第二反射元件（16）和（18）构成。 来自第一波长的激光器（12）的能量被晶体偏移并以第二波长输出。 第二波长是由第三波长的能量的初次发射引起的第二波长，由从晶体中的第一波长产生的初级波长产生的第三波长。 镜面涂层施加在反射元件（16和/或18）上，用于容纳主要发射并增强二次工艺。 然后，第二光学参量振荡器（22）将由第一OPO（14）输出的能量在第二波长处移位到期望的第四波长。

公开(公告)号：US06344920B1

公开(公告)日：2002-02-05

申请号：US09478229

申请日：2000-01-06

申请人： Joseph M. Fukumoto

发明人： Joseph M. Fukumoto

IPC分类号： G02F139

CPC分类号： G02F1/39 ,  G02F1/3551 ,  G02F1/3553 ,  G02F2201/16 ,  G02F2201/17 ,  G02F2201/18 ,  G02F2201/34 ,  G02F2203/05 ,  G02F2203/58 ,  H01S3/0809

摘要： An arrangement (10) for efficiently shifting energy received at a first wavelength and outputting the shifted energy at a second wavelength. The arrangement (10) includes a laser (12) and an optical parametric oscillator (14) of unique design. The oscillator (14) is constructed with a energy shifting crystal (20) and first and second reflective elements (16) and (18) disposed on either side thereof. Light from the laser (12) at a fundament frequency is shifted by the crystal and output at a second wavelength. The second wavelength is a primary emission and induces a secondary emission of energy in the crystal. A novel feature of the invention is a coating applied on the reflective elements (16 and/or 18) for minimizing the secondary emission. This constrains the energy to be output by the arrangement (10) at the wavelength of the desired primary emission. In the alternative, the arrangement (10) may be optimized to output one or more of the secondary emissions.

摘要翻译： 一种用于有效地移动以第一波长接收的能量并输出第二波长的移动的能量的装置（10）。 该装置（10）包括具有独特设计的激光器（12）和光学参数振荡器（14）。 振荡器（14）由能量转换晶体（20）和设置在其两侧的第一和第二反射元件（16）和（18）构成。 激光器（12）以基波频率的光被晶体偏移并以第二波长输出。 第二波长是主要发射，并在晶体中引起二次能量发射。 本发明的新颖特征是涂覆在反射元件（16和/或18）上用于最小化二次发射的涂层。 这限制了在所需的一次发射波长下由布置（10）输出的能量。 在替代方案中，布置（10）可以被优化以输出一个或多个二次排放。

公开(公告)号：US06181463B2

公开(公告)日：2001-01-30

申请号：US08822967

申请日：1997-03-21

申请人： Almantas Galvanauskas ,  Anand Hariharan ,  Donald J. Harter

发明人： Almantas Galvanauskas ,  Anand Hariharan ,  Donald J. Harter

IPC分类号： G02F139

CPC分类号： G02F1/39 ,  A61B18/22 ,  A61C1/0046 ,  B23K26/0624 ,  G02F2001/3548 ,  G02F2001/392 ,  H01S3/0057 ,  H01S3/0604 ,  H01S3/115

摘要： Use of quasi-phase-matched (QPM) materials for parametric chirped pulse amplification (PCPA) substantially reduces the required pump peak power and pump brightness, allowing exploitation of spatially-multimode and long duration pump pulses. It also removes restrictions on pump wavelength and amplification bandwidth. This allows substantial simplification in pump laser design for a high-energy PCPA system and, consequently, the construction of compact diode-pumped sources of high-energy ultrashort optical pulses. Also, this allows elimination of gain-narrowing and phase-distortion limitations on minimum pulse duration, which typically arise in a chirped pulse amplification system. One example of a compact source of high-energy ultrashort pulses is a multimode-core fiber based PCPA system. Limitations on pulse energy due to the limited core size for single-mode fibers are circumvented by using large multimode core. Limitations on pulse duration and beam quality due to multimode core are circumvented by using a PCPA scheme. Additionally, the large core of the multimode fiber facilitates cladding-pumping by inexpensive and high-power multiple-mode laser diodes.

公开(公告)号：US06785041B1

公开(公告)日：2004-08-31

申请号：US10001088

申请日：2001-10-31

申请人： Konstantin Vodopyanov

发明人： Konstantin Vodopyanov

IPC分类号： G02F139

CPC分类号： G02F1/39

摘要： Method and system for providing laser light that is tunable over a relatively wide mid-infrared wavelength range, such as 2-17 &mgr;m. A first noncritically phase matched nonlinear crystal receives a laser light beam and converts the light to a first cavity beam having a first selected wavelength, using optical parametric oscillation techniques. A second noncritically phase matched nonlinear crystal receives the first cavity beam and converts the light to a second cavity beam having a second selected wavelength. Where the first wavelength is tuned (e.g., by temperature change or effective path length change) over a wavelength range of 2-5 &mgr;m, the second wavelength can vary over a higher and broader wavelength range, such as 3-17 &mgr;m.

摘要翻译： 用于提供可在相对宽的中红外波长范围（例如2-17μm）上调谐的激光的方法和系统。 使用光学参数振荡技术，第一非相位匹配非线性晶体接收激光束并将光转换成具有第一选定波长的第一空腔光束。 第二非相位匹配非线性晶体接收第一腔光束并将光转换成具有第二选定波长的第二腔光束。 在2-5μm的波长范围上第一波长被调谐（例如通过温度变化或有效路径长度变化）的情况下，第二波长可以在更高和更宽的波长范围内变化，例如3-17μm。

公开(公告)号：US06775054B1

公开(公告)日：2004-08-10

申请号：US10217853

申请日：2002-08-12

申请人： Arlee V. Smith ,  Darrell J. Armstrong

发明人： Arlee V. Smith ,  Darrell J. Armstrong

IPC分类号： G02F139

CPC分类号： G02F1/39 ,  G02F2201/17 ,  G02F2203/15

摘要： A device for optical parametric amplification utilizing four mirrors oriented in a nonplanar configuration where the optical plane formed by two of the mirrors is orthogonal to the optical plane formed by the other two mirrors and with the ratio of lengths of the laser beam paths approximately constant regardless of the scale of the device. With a cavity length of less than approximately 110 mm, a conversion efficiency of greater than 45% can be achieved.

摘要翻译： 一种用于光学参量放大的装置，其利用以非平面构造取向的四个反射镜，其中由两个反射镜形成的光学平面与由另外两个反射镜形成的光学平面正交，并且激光束路径的长度比率几乎不变 的设备规模。 在腔长度小于约110mm的情况下，可以实现大于45％的转换效率。

公开(公告)号：US06535327B1

公开(公告)日：2003-03-18

申请号：US09567908

申请日：2000-05-10

申请人： Konstantin Vodopyanov

发明人： Konstantin Vodopyanov

IPC分类号： G02F139

CPC分类号： G02F1/39 ,  G02F1/3551 ,  H01S3/1083

摘要： An optical parametric oscillator and a laser system including an optical parametric oscillator is provided for producing widely tunable coherent light over about 6 &mgr;m, such as in the range of at least about 7 &mgr;m to 18 &mgr;m range. Optical parametric oscillators in accordance with the invention advantageously include CdGeAs2 (CGA) crystals. Such crystals, in accordance with the invention can exhibit exceptionally small (

摘要翻译： 提供了一种光学参量振荡器和包括光学参量振荡器的激光系统，用于产生大约6μm的广泛可调谐的相干光，例如在至少约7μm至18μm的范围内。 根据本发明的光学参量振荡器有利地包括CdGeAs2（CGA）晶体。 根据本发明的这种晶体可以表现出非常小的（<0.1cm -1）的强度损失。 根据本发明的激光系统可以包括基于CGA晶体的倍频二氧化碳激光器作为泵浦光束和频率倍增器或变换器。

公开(公告)号：US06266179B1

公开(公告)日：2001-07-24

申请号：US09145031

申请日：1998-09-01

申请人： Hiroshi Nakamoto

发明人： Hiroshi Nakamoto

IPC分类号： G02F139

CPC分类号： H04B10/25137 ,  G02F1/3536 ,  G02F2203/25

摘要： An object is to provide an optical transmission apparatus, an optical repetition apparatus and an optical transmission method in which the chirp polarity applied to an output signal light can be modified easily in accordance with the wavelength dispersion characteristics of a transmission path. Therefore, for example, with the optical transmission apparatus according to the invention a signal light of optical frequency fsig generated by a signal light generating device, and a probe light of optical frequency fp generated by a probe light generation device are input to a four wave mixing generation device having a nonlinear optical effect to generate various signal lights with optical frequencies of fsig, fp, 2×fsig−fp and 2×fp−fsig. One of the signal lights output from the four wave mixing generation device is selected by a signal light selection device and output to the transmission path. Consequently, the chirp applied to the signal light and the polarity thereof can be modified easily in accordance with the wavelength dispersion characteristics of the transmission path.

摘要翻译： 本发明的目的是提供一种光传输装置，光学重复装置和光传输方法，其中可以根据传输路径的波长色散特性容易地修改施加到输出信号光的啁啾极性。 因此，例如，根据本发明的光传输装置，由信号光发生装置产生的光频率fsig的信号光和由探测光产生装置产生的光频率fp的探测光被输入到四波 具有非线性光学效果的混合发生装置，以产生具有fsig，fp，2xfsig-fp和2xfp-fsig的光频率的各种信号光。 从四波混频发生装置输出的信号光中的一个由信号光选择装置选择并输出到传输路径。 因此，可以根据传输路径的波长色散特性容易地修改施加到信号光的啁啾和极性。