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公开(公告)号：EP1584974A1
公开(公告)日：2005-10-12
申请号：EP05012516.0
申请日：1998-01-08
发明人： Pietersc, Jan-Willem , Petersen, Alan B. , Pohalski, Chris , Cheng, Emily , Lane, Randell , Nighan, William L., Jr.
CPC分类号： H01S3/10 , G02F1/353 , G02F1/3534 , G02F1/37 , G02F2001/354 , G02F2201/16
摘要： A diode pumped laser includes a high reflector and an output coupler defining a resonator. The resonator includes a gain medium and a Q-switch and produces a fundamental beam. A first non-linear crystal is positioned extra-cavity of the resonator along a path of the fundamental beam. The first non-linear crystal generates a second harmonic beam from the fundamental beam. The first non-linear crystal is critically phased matched. A second non-linear crystal is portioned extra-cavity of the resonator along a path of the fundamental beam and the path of the second harmonic beam. The second non-linear crystal produces a third harmonic beam. The second non-linear crystal is critically phased matched.
摘要翻译： 二极管泵浦激光器包括高反射器和限定谐振器的输出耦合器。 谐振器包括增益介质和Q开关，并产生基波束。 第一非线性晶体沿着基波束的路径被定位在谐振器的外腔。 第一个非线性晶体从基波束产生二次谐波。 第一个非线性晶体被严格分阶段匹配。 第二非线性晶体沿着基波束的路径和第二谐波束的路径被分成谐振器的外腔。 第二个非线性晶体产生三次谐波光束。 第二个非线性晶体被严格分阶段匹配。
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2.发明授权APPARATUS FOR COUPLING A MULTIPLE EMITTER LASER DIODE TO A MULTIMODE OPTICAL FIBER 失效设备用于链接VIELFACHEMITTIERENDER激光二极管的光多模光纤
公开(公告)号：EP0774129B1
公开(公告)日：2003-09-24
申请号：EP96921231.5
申请日：1996-05-28
发明人： HEAD, David, F. , BAER, Thomas, M.
IPC分类号： G02B6/42
CPC分类号： G02B6/4206 , G02B6/425 , H01S3/094053 , H01S3/0941 , H01S5/4025
摘要： A laser system includes a laser diode source (10) with a plurality of output facets (12, 14, 16). The laser diode source (10) produces a divergent output along an emission path. A microlens (26) is optically coupled to the diode source (10). The microlens (26)receives the divergent output along the emission path and modifies the divergence of the output in a high numerical direction of the microlens (26). A power source is coupled to the laser diode source (10).
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公开(公告)号：EP0775329B1
公开(公告)日：2002-10-16
申请号：EP95928821.8
申请日：1995-08-10
发明人： JOHNSON, Bertram, C.
CPC分类号： G02F1/39 , G02F1/3534 , G02F1/37
摘要： A non-linear frequency conversion device is tunable over a wide tuning range. An input source provides a first input beam with a frequency lambda l. A first frequency conversion crystal has an input beam face that is cut at a phase matching angle theta 1 and is positioned on a first stage at a stage angle alpha 1. The first frequency conversion crystal provides frequency conversion of the input beam of frequency lambda 1 to a selected frequency lambda 2 of a first portion of the selected tuning range. A second frequency conversion crystal has an input beam face that is cut at a phase matching angle theta 2 and is positioned on a second stage at a stage angle alpha 2. The second frequency conversion crystal provides frequency conversion of the input beam from a frequency lambda 1 to a selected frequency lambda 3 of a second portion of the selected tuning range. Only one of the frequency conversion crystals provides frequency conversion in the range for a particular input wavelength while the other crystal is inactive, and serves as a beam displacement compensator. The non-linear frequency conversion device can be used for second harmonic generation, sum frequency mixing, difference frequency mixing, or optical parametric generation.
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4.发明授权
公开(公告)号：EP0742966B1
公开(公告)日：2001-01-03
申请号：EP95909474.9
申请日：1995-02-03
IPC分类号： H01S3/109
CPC分类号： G02F1/37 , G02F2001/3542 , H01S3/081 , H01S3/094053 , H01S3/0941 , H01S3/09415 , H01S3/109 , H01S3/13 , H01S3/1611 , H01S3/1653
摘要： A diode pumped, multi axial mode, intracavity frequency doubled laser resonator has high amplitude stability, meaning that the percent root mean square noise (% RMS) of the doubled output beam power is low. A diode pump source (28) supplies a pump beam to a laser crystal (22) positioned in a resonator cavity and produces a multi axial mode infrared beam that is incident on a doubling crystal (36), also positioned in the resonator. A frequency doubled output beam is produced that has an RMS of less than 3 %. The laser is highly efficient, provides high output power and its output beam is of high spatial quality.
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公开(公告)号：EP0775329A1
公开(公告)日：1997-05-28
申请号：EP95928821.0
申请日：1995-08-10
发明人： JOHNSON, Bertram, C.
IPC分类号： G02F1
CPC分类号： G02F1/39 , G02F1/3534 , G02F1/37
摘要： A non-linear frequency conversion device is tunable over a wide tuning range. An input source provides a first input beam with a frequency μl. A first frequency conversion crystal has an input beam face that is cut at a phase matching angle υ1 and is positioned on a first stage at a stage angle α1. The first frequency conversion crystal provides frequency conversion of the input beam of frequency μ1 to a selected frequency μ2 of a first portion of the selected tuning range. A second frequency conversion crystal has an input beam face that is cut at a phase matching angle υ2 and is positioned on a second stage at a stage angle α2. The second frequency conversion crystal provides frequency conversion of the input beam from a frequency μ1 to a selected frequency μ3 of a second portion of the selected tuning range. Only one of the frequency conversion crystals provides frequency conversion in the range for a particular input wavelength while the other crystal is inactive, and serves as a beam displacement compensator. The non-linear frequency conversion device can be used for second harmonic generation, sum frequency mixing, difference frequency mixing, or optical parametric generation.
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公开(公告)号：EP0742964A1
公开(公告)日：1996-11-20
申请号：EP95908756.0
申请日：1995-01-31
IPC分类号： H01S3
CPC分类号： H01S3/09415 , H01S3/08 , H01S3/08072 , H01S3/081 , H01S3/094053 , H01S3/1611 , H01S3/1673
摘要： A high efficiency, diode pumped laser includes a resonator mirror (40) and an output coupler (42) which define a nearly confocal resonator. Positioned in the resonator is a laser crystal (43). A diode pump source (44) supplies a pump beam to the laser crystal and produces an output beam. A strong thermal lens transforms a non-confocal resonator to a nearly confocal resonator. The TEM00 mode diameter in the laser crystal may be smaller than the pump beam diameter that is incident on the laser crystal. Output powers greater than about 4 W are achieved, the overall optical efficiency is greater than about 25 %, and an optical slope efficiency in a TEM00 mode of greater than 40 % is possible.
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7.发明公开Laser resonator with laser medium exhibiting thermally induced birefringence 失效具有激光介质的激光谐振器展示了热诱导的双向感应
公开(公告)号：EP0370620A3
公开(公告)日：1991-10-02
申请号：EP89310797.9
申请日：1989-10-20
CPC分类号： H01S3/115 , H01S3/08072 , H01S3/0816 , H01S3/0818 , H01S3/082 , H01S3/106 , H01S3/107 , H01S3/127
摘要： A laser resonator (20) generates a polarized output beam (50) with a laser medium (21) exhibiting thermally induced birefringence and a Y-shaped resonant cavity. A lasing axis extends between a first side (22) and a second side (23) of the laser medium. Radiation transmitted out of the first side of the laser medium has its polarization rotated (25) by 90 degrees and is guided back along the lasing axis into the laser medium for a second pass. A polarizer (26) is mounted on the second side of the laser medium for guiding the radiation having a first polarization along a first path (27) and radiation having a second polarization that is 90 degrees from the first polarization along a second path (39). Both paths include the lasing axis of the laser medium and form a Y-shaped resonant cavity. Along the first path, a high reflecting means (M1) is provided to reflect the radiation back along the first path. Along the second path, an output coupler (37) is provided by which a component of the radiation is reflected back along the second path and a component is transmitted as the polarized output beam (50). A Q-switch (26,28,30) is provided in the first path between the polarizer and the high reflecting means, or (33,34) in the second path between the polarizer and the output coupler, or in both paths.
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公开(公告)号：EP0826258B1
公开(公告)日：2004-07-07
申请号：EP96920270.4
申请日：1996-05-17
IPC分类号： H01S3/109
CPC分类号： A61F9/008 , G02F1/37 , G02F2001/3542 , H01S3/081 , H01S3/094053 , H01S3/09415 , H01S3/109 , H01S3/13 , H01S3/1611 , H01S3/1643 , H01S3/1653 , H01S3/1673
摘要： A diode pumped, multi axial mode, intracavity doubled, intracavity tripled laser, includes at least two resonator mirrors defining a resonator cavity. A laser crystal (22, 56) and a doubling crystal (36) are positioned in the resonator cavity. A tripling crystal (80) is also positioned in the resonator cavity. A diode pump source supplies a pump beam to the laser crystal and produces a laser crystal beam with a plurality of axial modes that are incident on the doubling crystal. This produces a frequency doubled output beam. Further, a diode pumped, multi axial mode, intracavity nonlinearly converted laser is provided and includes at least two resonator mirrors defining a resonator cavity, a laser crystal and a nonlinear conversion apparatus positioned in the resonator cavity. A nonlinear conversion apparatus is also positioned in the resonator cavity. A diode pump source supplying a pump beam to the laser crystal and produces a laser crystal beam with a plurality of axial modes that are incident on the nonlinear conversion apparatus. The result is a nonlinearly converted output beam that has a % RMS noise of less than 3 %.
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9.发明授权
公开(公告)号：EP1025624B1
公开(公告)日：2003-03-05
申请号：EP98956141.0
申请日：1998-10-22
IPC分类号： H01S3/0941 , H01S3/08
CPC分类号： H01S3/09415 , H01S3/042 , H01S3/08045 , H01S3/0805 , H01S3/08072 , H01S3/1611 , H01S3/1673
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公开(公告)号：EP0824771B1
公开(公告)日：2002-01-30
申请号：EP96915399.8
申请日：1996-04-30
IPC分类号： H01S3/0941 , H01S3/08
CPC分类号： H01S3/08 , H01S3/08072 , H01S3/081 , H01S3/094053 , H01S3/09415 , H01S3/1611 , H01S3/1673
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