公开(公告)号：US07881349B2

公开(公告)日：2011-02-01

申请号：US12021652

申请日：2008-01-29

Applicant: Christopher Ihli ,  Qi-Ze Shu ,  Andrea Caprara ,  Juan L. Chilla

Inventor： Christopher Ihli ,  Qi-Ze Shu ,  Andrea Caprara ,  Juan L. Chilla

IPC: H01S3/109 ,  H01S3/081 ,  H01S3/0941

CPC classification number: H01S3/0604 ,  H01S3/0621 ,  H01S3/0805 ,  H01S3/0816 ,  H01S3/094053 ,  H01S3/0941 ,  H01S3/106 ,  H01S3/109 ,  H01S5/041 ,  H01S5/14 ,  H01S5/183

Abstract: An optically pumped semiconductor-laser (OPS-laser) resonator includes an arrangement for delivering optical pump radiation on an OPS-chip to cause fundamental radiation to circulate in the resonator. The resonator includes second and third-harmonic generating crystals and is arranged deliver third-harmonic radiation. The resonator also includes a stop positioned and configured to stabilize the laser output. The pump radiation arrangement delivers the pump radiation at an angle to the resonator axis and includes wedged GRIN lens arranged such that the pump radiation forms a circular spot on the OPS chip. The third harmonic generating crystal acts as a polarizer for the fundamental radiation and angularly separates fundamental and third harmonic beams.

Abstract translation: 光泵浦半导体激光器（OPS激光器）谐振器包括用于在OPS芯片上传送光泵浦辐射以使基本辐射在谐振器中循环的布置。 谐振器包括二次和三次谐波产生的晶体，并且被布置成传递三次谐波辐射。 谐振器还包括定位和配置以稳定激光输出的停止。 泵浦辐射装置将泵浦辐射与谐振器轴线成角度地传送，并且包括楔形GRIN透镜，其布置成使得泵浦辐射在OPS芯片上形成圆形点。 三次谐波产生晶体用作基波辐射的偏振器，并且角度地分离基波和三次谐波。

公开(公告)号：US07593440B2

公开(公告)日：2009-09-22

申请号：US11387400

申请日：2006-03-23

Applicant: Luis A. Spinelli ,  Andrea Caprara ,  Andrei Staroudoumov ,  Norman Hodgson

Inventor： Luis A. Spinelli ,  Andrea Caprara ,  Andrei Staroudoumov ,  Norman Hodgson

IPC: H01S3/10

CPC classification number: H01S3/2383 ,  G02F1/3534 ,  G02F1/37 ,  G02F2001/354 ,  H01S3/0085 ,  H01S3/06754 ,  H01S3/109 ,  H01S3/1304 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/1611 ,  H01S3/1618 ,  H01S3/2308

Abstract: Laser apparatus including two different, pulsed MOPAs, one having a fundamental wavelength of 1064 nm and the other having a fundamental wavelength of 1564 nm, provide trains of optical pulses. The 1064-nm pulses are frequency tripled to 355 nm and the 1564-nm pulses are frequency doubled to 782 nm. The 355-nm and 782-nm pulses are mixed to provide 244-nm pulses. The 244-nm pulses are mixed with residual 1064-nm pulses to provide 198-nm output pulses of the apparatus. The output pulses can be either digitally modulated or amplitude modulated by controlling the phase relationship between the 1064-nm and 1564-nm pulses.

Abstract translation: 包括两个不同的脉冲MOPA的激光装置，一个基本波长为1064nm，另一个具有1564nm的基波，提供光脉冲列。 1064nm脉冲频率增加到355nm，1564nm脉冲频率加倍到782nm。 将355nm和782nm的脉冲混合以提供244nm的脉冲。 将244nm脉冲与残余的1064nm脉冲混合，以提供装置的198nm输出脉冲。 输出脉冲可以通过控制1064 nm和1564 nm脉冲之间的相位关系进行数字调制或幅度调制。

公开(公告)号：US07447245B2

公开(公告)日：2008-11-04

申请号：US11801538

申请日：2007-05-10

Applicant: Andrea Caprara ,  Luis A. Spinelli ,  R. Russel Austin

Inventor： Andrea Caprara ,  Luis A. Spinelli ,  R. Russel Austin

IPC: H01S3/10 ,  H01S3/08 ,  H01S3/083

CPC classification number: G02F1/39 ,  H01S3/082 ,  H01S3/1083 ,  H01S3/109 ,  H01S5/14

Abstract: An optically pumped semiconductor pumped optical parametric oscillator (OPS-pumped OPO) includes an OPS laser resonator and an OPO resonator A portion the OPS laser resonator axis and the OPO resonator axis are collinear. An optically nonlinear crystal is located in the coaxial portion of the resonators and arranged to frequency divide fundamental radiation generated in the OPS laser resonator into signal and idler radiations. In one arrangement, the OPO laser resonator is also an OPS resonator and is arranged to generate radiation at the wavelength of the signal radiation, with the idler radiation having the difference-frequency wavelength of the signal and fundamental radiations.

Abstract translation: 光泵浦半导体泵浦光参量振荡器（OPS泵浦OPO）包括OPS激光谐振器和OPO谐振器A部分，OPS激光谐振器轴和OPO谐振器轴共线。 光学非线性晶体位于谐振器的同轴部分中，并被布置成将OPS激光谐振器中产生的基本辐射频率分频为信号和惰轮辐射。 在一种布置中，OPO激光谐振器也是OPS谐振器，并且被布置成在信号辐射的波长处产生辐射，惰性辐射具有信号的差频波长和基波辐射。

公开(公告)号：US06940880B2

公开(公告)日：2005-09-06

申请号：US10386005

申请日：2003-03-11

Applicant: Stuart Butterworth ,  Andrea Caprara ,  R. Russel Austin

Inventor： Stuart Butterworth ,  Andrea Caprara ,  R. Russel Austin

IPC: H01S3/081 ,  H01S3/082 ,  H01S3/083 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/105 ,  H01S3/109 ,  H01S5/04 ,  H01S5/06 ,  H01S5/10 ,  H01S5/14 ,  H01S5/183 ,  H01S5/42

CPC classification number: H01S3/109 ,  H01S3/07 ,  H01S3/0816 ,  H01S3/082 ,  H01S3/083 ,  H01S3/0941 ,  H01S3/1003 ,  H01S3/105 ,  H01S5/041 ,  H01S5/141 ,  H01S5/183 ,  H01S5/423

Abstract: An optically pumped semiconductor laser includes an active ring-resonator having two or more optically pumped semiconductor (OPS) structures each including a mirror-structure and a multilayer gain-structure. The mirror-structures serve as fold mirrors for the resonator axis. An optically nonlinear crystal may be included in the ring-resonator for generating second-harmonic radiation from fundamental radiation generated in the resonator. Another optically nonlinear crystal may be provided for generating third-harmonic or fourth-harmonic radiation from the second-harmonic radiation. In one example, including a third-harmonic generating crystal, a passive ring-resonator partially coaxial with the active ring-resonator is provided for circulating second-harmonic radiation to provide resonant amplification of the second-harmonic radiation for enhancing third-harmonic conversion. Apparatus for automatically maintaining the passive ring-resonator in a resonant condition for the second-harmonic radiation is disclosed.

公开(公告)号：US06574255B1

公开(公告)日：2003-06-03

申请号：US09263928

申请日：1999-03-05

Applicant: Andrea Caprara ,  Juan L. Chilla ,  Luis A. Spinelli

Inventor： Andrea Caprara ,  Juan L. Chilla ,  Luis A. Spinelli

IPC: H01S319

CPC classification number: H01S5/141 ,  H01S3/109 ,  H01S5/02484 ,  H01S5/041 ,  H01S5/183

Abstract: External cavity optically-pumped semiconductor lasers (OPS-lasers) including an OPS-structure having a mirror-structure surmounted by a surface-emitting, semiconductor multilayer (periodic) gain-structure are disclosed. The gain-structure in pumped by light from diode-lasers. The OPS-lasers can provide fundamental laser output-power of about two Watts (2.0 w) or greater. Inactivity frequency-converted arrangements of the OPS-lasers can provide harmonic laser output-power of about one-hundred milliwatts (100 raw) or greater, even at wavelengths in the ultraviolet region of the electromagnetic spectrum. These high output powers can be provided even in single axial-mode operation. Particular features of the OPS-lasers include a heat sink-assembly for cooling the OPS-structure, a folded resonator concept for providing optimum beam size at optically-nonlinear crystals used for frequency conversion, preferred selection of optically-nonlinear materials for frequency-conversion, and compound resonator designs for amplifying second harmonic-radiation for subsequent conversion to third or fourth harmonic radiation.

Abstract translation: 公开了包括具有由表面发射的半导体多层（周期）增益结构所覆盖的镜面结构的OPS结构的外腔光泵浦半导体激光器（OPS-激光器）。 由二极管激光器的光泵浦的增益结构。 OPS激光器可以提供约2瓦（2.0瓦）或更大的基本激光输出功率。 即使在电磁波谱的紫外线区域的波长下，OPS-激光器的不活动频率转换装置也可提供大约一百毫瓦（100原始）或更大的谐波激光输出功率。 即使在单轴向模式操作中也可以提供这些高输出功率。 OPS激光器的特征包括用于冷却OPS结构的散热器组件，用于在用于频率转换的光学非线性晶体处提供最佳光束尺寸的折叠谐振器概念，用于频率转换的光学非线性材料的优选选择 以及用于放大二次谐波辐射以用于随后转换成第三或第四谐波辐射的复合谐振器设计。

公开(公告)号：US06507593B1

公开(公告)日：2003-01-14

申请号：US09963607

申请日：2001-09-24

Applicant: Luis A. Spinelli ,  Juan L. Chilla ,  Andrea Caprara ,  Briggs Atherton

Inventor： Luis A. Spinelli ,  Juan L. Chilla ,  Andrea Caprara ,  Briggs Atherton

IPC: H01S310

CPC classification number: H01S5/183 ,  H01S3/082 ,  H01S3/09415 ,  H01S3/105 ,  H01S3/106 ,  H01S5/02248 ,  H01S5/041 ,  H01S5/0654 ,  H01S5/1039 ,  H01S5/141 ,  H01S5/142 ,  H01S2301/163 ,  H01S2301/166

Abstract: A laser for delivering laser radiation at a selected one of a plurality of equally-spaced frequencies extending over a frequency range includes a laser resonator defined by two end mirrors. The resonator includes a surface-emitting semiconductor multilayer gain-structure in optical contact with one of the mirrors. A third mirror located in the laser resonator forms an etalon with that mirror. The third mirror is movable for adjusting a peak transmission frequency of the etalon to align with the selected frequency. The resonator end mirrors are spaced apart by an optical distance selected such that the frequency and frequency-spacing of possible longitudinal lasing modes of the resonator correspond with the plurality of equally-spaced frequencies. When the peak transmission frequency of the etalon is aligned with the selected frequency the laser resonator delivers radiation in a single longitudinal mode at the selected frequency.

Abstract translation: 用于以在频率范围上延伸的多个等间隔的频率中的选定的一个传送激光辐射的激光器包括由两个后视镜限定的激光谐振器。 谐振器包括与其中一个反射镜光学接触的表面发射半导体多层增益结构。 位于激光谐振器中的第三个反射镜与该反射镜形成标准具。 第三反射镜是可移动的，用于调节标准具的峰值传输频率以与所选择的频率对准。 共振器端反射镜被选择的光学距离间隔开，使得谐振器的可能的纵向激光模式的频率和频率间隔对应于多个等间隔的频率。 当标准具的峰值传输频率与所选频率对准时，激光谐振器以所选频率在单个纵向模式中传送辐射。

公开(公告)号：US06298076B1

公开(公告)日：2001-10-02

申请号：US09264159

申请日：1999-03-05

Applicant: Andrea Caprara ,  Juan L. Chilla ,  Luis A. Spinelli

Inventor： Andrea Caprara ,  Juan L. Chilla ,  Luis A. Spinelli

IPC: H01S304

CPC classification number: H01S5/141 ,  H01S3/109 ,  H01S5/02484 ,  H01S5/041 ,  H01S5/183

Abstract: External-cavity optically-pumped semiconductor lasers (OPS-lasers) including an OPS-structure having a mirror-structure surmounted by a surface-emitting, semiconductor multilayer (periodic) gain-structure are disclosed. The gain-structure is pumped by light from diode-lasers. The OPS-lasers can provide fundamental laser output-power of about two Watts (2.0 W) or greater. Intracavity frequency-converted arrangements of the OPS-lasers can provide harmonic laser output-power of about one-hundred milliwatts (100 mW) or greater, even at wavelengths in the ultraviolet region of the electromagnetic spectrum. These high output powers can be provided even in single axial-mode operation. Particular features of the OPS-lasers include a heat sink-assembly for cooling the OPS-structure, a folded resonator concept for providing optimum beam size at optically-nonlinear crystals used for frequency conversion, preferred selection of optically-nonlinear materials for frequency-conversion, and compound resonator designs for amplifying second harmonic-radiation for subsequent conversion to third or fourth harmonic radiation.

Abstract translation: 公开了包括具有由表面发射的半导体多层（周期）增益结构所覆盖的镜面结构的OPS结构的外腔光泵浦半导体激光器（OPS-激光器）。 增益结构由二极管激光器的光泵浦。 OPS激光器可以提供约2瓦（2.0瓦）或更大的基本激光输出功率。 OPS激光器的腔内频率转换装置即使在电磁波谱的紫外区域的波长下也能提供约百毫瓦（100mW）或更大的谐波激光输出功率。 即使在单轴向模式操作中也可以提供这些高输出功率。 OPS激光器的特征包括用于冷却OPS结构的散热器组件，用于在用于频率转换的光学非线性晶体处提供最佳光束尺寸的折叠谐振器概念，用于频率转换的光学非线性材料的优选选择 以及用于放大二次谐波辐射以用于随后转换成第三或第四谐波辐射的复合谐振器设计。

公开(公告)号：US6097742A

公开(公告)日：2000-08-01

申请号：US263380

申请日：1999-03-05

Applicant: Andrea Caprara ,  Juan L. Chilla ,  Luis A. Spinelli

Inventor： Andrea Caprara ,  Juan L. Chilla ,  Luis A. Spinelli

IPC: H01S3/094 ,  H01S3/109 ,  H01S5/04 ,  H01S5/14 ,  H01S5/183 ,  H01S3/10

CPC classification number: H01S5/141 ,  H01S3/109 ,  H01S3/094 ,  H01S5/02484 ,  H01S5/041 ,  H01S5/183

Abstract: External-cavity optically-pumped semiconductor lasers (OPS-lasers) including an OPS-structure having a mirror-structure surmounted by a surface-emitting, semiconductor multilayer (periodic) gain-structure are disclosed. The gain-structure is pumped by light from diode-lasers. The OPS-lasers can provide fundamental laser output-power of about two Watts (2.0 W) or greater. Intracavity frequency-converted arrangements of the OPS-lasers can provide harmonic laser output-power of about one-hundred milliwatts (100 mW) or greater, even at wavelengths in the ultraviolet region of the electromagnetic spectrum. These high output powers can be provided even in single axial-mode operation. Particular features of the OPS-lasers include a heat sink-assembly for cooling the OPS-structure, a folded resonator concept for providing optimum beam size at optically-nonlinear crystals used for frequency conversion, preferred selection of optically-nonlinear materials for frequency-conversion, and compound resonator designs for amplifying second harmonic-radiation for subsequent conversion to third or fourth harmonic radiation.

公开(公告)号：US5912912A

公开(公告)日：1999-06-15

申请号：US924176

申请日：1997-09-05

Applicant: Andrea Caprara ,  Luis A. Spinelli

Inventor： Andrea Caprara ,  Luis A. Spinelli

IPC: G02F1/37 ,  H01S3/07 ,  H01S3/08 ,  H01S3/081 ,  H01S3/109 ,  H01S3/11 ,  H01S3/139 ,  H01S3/23 ,  H01S3/10

CPC classification number: H01S3/117 ,  H01S3/07 ,  H01S3/139 ,  G02F1/37 ,  H01S3/005 ,  H01S3/08 ,  H01S3/08072 ,  H01S3/0816 ,  H01S3/094053 ,  H01S3/09415 ,  H01S3/10046 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/1653 ,  H01S3/1673

Abstract: A continuously-pumped, repetitively-pulsed, Q-switched laser resonator includes two different gain-media which lase at about the same wavelength. By separately and variably pumping the different gain-media, the laser resonator can efficiently generate output radiation having parameters which stay constant over a much wider range of pulse-repetition frequency than would be possible were either one of the gain-media solely deployed in the resonator. In one embodiment, the laser resonator includes an arrangement for providing near real-time compensation for variations in thermal-lensing in the gain-media resulting from variations in pump-power or pulse-repetition frequency.

Abstract translation: 连续泵浦，重复脉冲的Q开关激光谐振器包括两个不同的增益介质，其在大致相同的波长下延伸。 通过分别和可变地泵浦不同的增益介质，激光谐振器可以有效地产生具有参数的输出辐射，该参数在脉冲重复频率的更宽范围内保持恒定，这比可能是增益介质中仅一个部署在 谐振器。 在一个实施例中，激光谐振器包括用于为增益介质中由于泵浦功率或脉冲重复频率的变化而导致的热透镜变化的近似实时补偿的装置。

公开(公告)号：US20130003761A1

公开(公告)日：2013-01-03

申请号：US13174330

申请日：2011-06-30

Applicant: Ian MACGILLIVRAY ,  Andrea CAPRARA ,  Sergei GOVORKOV

Inventor： Ian MACGILLIVRAY ,  Andrea CAPRARA ,  Sergei GOVORKOV

IPC: H01S3/098

CPC classification number: H01S5/0657 ,  H01S3/07 ,  H01S3/0813 ,  H01S3/094026 ,  H01S3/1118 ,  H01S3/1121 ,  H01S3/1306 ,  H01S3/1307 ,  H01S5/041 ,  H01S5/14 ,  H01S5/183

Abstract: A laser includes an optically pumped semiconductor OPS gain-structure. The apparatus has a laser-resonator which includes a mode-locking device for causing the laser to deliver mode-locked pulses. The resonator has a total length selected such that the mode-locked pulses are delivered at a pulse repetition frequency of about 100 MHz. An optical arrangement within the resonator provides that radiation circulating in the resonator makes a plurality of incidences on the OPS gain-structure with a time less than the excited-state lifetime of the gain-structure between successive incidences.

Abstract translation: 激光器包括光泵浦半导体OPS增益结构。 该装置具有激光谐振器，该激光谐振器包括用于使激光器传递锁模脉冲的模式锁定装置。 共振器具有选择的总长度，使得锁模脉冲以约100MHz的脉冲重复频率传送。 谐振器内的光学布置使得在谐振器中循环的辐射在OPS增益结构上产生多个发生时间，其时间小于连续发生之间的增益结构的激发态寿命。