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1.发明授权Hybrid solid state laser system using a neodymium-based master oscillator and an ytterbium-based power amplifier 失效使用基于钕的主振荡器和基于镱的功率放大器的混合固态激光系统公开(公告)号：US06212215B1
公开(公告)日：2001-04-03
申请号：US08409244
申请日：1995-03-24
IPC分类号： H01S314
CPC分类号： H01S3/2308 , H01S3/1611 , H01S3/1618
摘要： In a master oscillator-power amplifier (MOPA) hybrid laser system, the master oscillator (MO) utilizes a Nd3+-doped gain medium and the power amplifier (PA) utilizes a diode-pumped Yb3+-doped material. The use of two different laser gain media in the hybrid MOPA system provides advantages that are otherwise not available. The Nd-doped gain medium preferably serves as the MO because such gain media offer the lowest threshold of operation and have already been engineered as practical systems. The Yb-doped gain medium preferably serves in the diode-pumped PA to store pump energy effectively and efficiently by virtue of the long emission lifetime, thereby reducing diode pump costs. One crucial constraint on the MO and PA gain media is that the Nd and Yb lasers must operate at nearly the same wavelength. The 1.047 &mgr;m Nd:YLF/Yb:S-FAP [Nd:LiYF4/Yb:Sr5(PO4)3F] hybrid MOPA system is a preferred embodiment of the hybrid Nd/Yb MOPA.
摘要翻译： 在主振荡器功率放大器（MOPA）混合激光系统中，主振荡器（MO）利用Nd3 +掺杂增益介质，功率放大器（PA）利用二极管泵浦的Yb3 +掺杂材料。 在混合MOPA系统中使用两种不同的激光增益介质提供了另外不可用的优点。 Nd掺杂增益介质优选用作MO，因为这样的增益介质提供了最低的操作阈值，并且已经被设计为实际的系统。 Yb掺杂增益介质优选用于二极管泵浦PA，由于长的发射寿命，能够有效且高效地存储泵浦能量，从而降低二极管泵的成本。 MO和PA增益介质的一个关键因素是Nd和Yb激光器必须在几乎相同的波长下工作。 1.047μmNd：YLF / Yb：S-FAP [Nd：LiYF4 / Yb：Sr5（PO4）3F]杂化MOPA系统是混合Nd / Yb MOPA的优选实施方案。
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公开(公告)号：US5517516A
公开(公告)日：1996-05-14
申请号：US184944
申请日：1994-01-21
IPC分类号： H01S3/16
CPC分类号： H01S3/16 , H01S3/1648
摘要： Ce.sup.3+ -doped LiSrAlF.sub.6 crystals are pumped by ultraviolet light which is polarized along the c axis of the crystals to effectively energize the laser system. In one embodiment, the polarized fourth harmonic light output from a conventional Nd:YAG laser operating at 266 nm is arranged to pump Ce:LiSrAlF.sub.6 with the pump light polarized along the c axis of the crystal. The Ce:LiSrAlF.sub.6 crystal may be placed in a laser cavity for generating tunable coherent ultraviolet radiation in the range of 280-320 nm. Additionally, Ce-doped crystals possessing the LiSrAlF.sub.6 type of chemical formula, e.g. Ce-doped LiCaAlF.sub.6 and LiSrGaF.sub.6, can be used. Alternative pump sources include an ultraviolet-capable krypton or argon laser, or ultraviolet emitting flashlamps. The polarization of the pump light will impact operation. The laser system will operate efficiently when light in the 280-320 nm gain region is injected or recirculated in the system such that the beam is also polarized along the c axis of the crystal. The Ce:LiSrAlF.sub.6 laser system can be configured to generate ultrashort pulses, and it may be used to pump other devices, such as an optical parametric oscillator.
摘要翻译： Ce3 +掺杂的LiSrAlF6晶体被沿着晶体的c轴极化的紫外光泵浦，以有效激励激光系统。 在一个实施例中，从266nm工作的常规Nd：YAG激光器输出的偏振四次谐波被布置成泵浦Ce：LiSrAlF6，其中泵浦光沿着晶体的c轴偏振。 Ce：LiSrAlF6晶体可以放置在激光腔中，用于产生280-320nm范围内的可调谐相干紫外线辐射。 另外，Ce掺杂的晶体具有LiSrAlF6类型的化学式，例如。 可以使用Ce掺杂的LiCaAlF6和LiSrGaF6。 替代的泵浦源包括具有紫外线能力的氪或氩激光器或紫外线发射闪光灯。 泵浦光的极化会影响操作。 当280-320纳米增益区域内的光被注入或再循环到系统中时，激光系统将有效地工作，使得光束也沿着晶体的c轴极化。 Ce：LiSrAlF6激光系统可以配置为产生超短脉冲，可用于泵浦其他器件，如光参量振荡器。
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3.发明授权Blue diode-pumped solid-state-laser based on ytterbium doped laser crystals operating on the resonance zero-phonon transition 失效基于在谐振零声子跃迁上操作的掺镱激光晶体的蓝色二极管泵浦固态激光器公开(公告)号：US06304584B1
公开(公告)日：2001-10-16
申请号：US09187327
申请日：1998-11-06
IPC分类号： H01S310
CPC分类号： H01S3/08036 , H01S3/09415 , H01S3/109 , H01S3/1618 , H01S3/1675
摘要： The invention provides an efficient, compact means of generating blue laser light at a wavelength near ˜493+/−3 nm, based on the use of a laser diode-pumped Yb-doped laser crystal emitting on its zero phonon line (ZPL) resonance transition at a wavelength near ˜986+/−6 nm, whose fundamental infrared output radiation is harmonically doubled into the blue spectral region. The invention is applied to the excitation of biofluorescent dyes (in the ˜490-496 nm spectral region) utilized in flow cytometry, immunoassay, DNA sequencing, and other biofluorescence instruments. The preferred host crystals have strong ZPL fluorecence (laser) transitions lying in the spectral range from ˜980 to ˜992 nm (so that when frequency-doubled, they produce output radiation in the spectral range from 490 to 496 nm). Alternate preferred Yb doped tungstate crystals, such as Yb:KY(WO4)2, may be configured to lase on the resonant ZPL transition near 981 nm (in lieu of the normal 1025 nm transition). The laser light is then doubled in the blue at 490.5 nm.
摘要翻译： 基于在其零声子线（ZPL）谐振上发射的激光二极管泵浦的Yb掺杂激光晶体的使用，本发明提供了以近似于493 +/- 3nm的波长产生蓝色激光的有效且紧凑的方法 在986 +/- 6nm附近的波长处的过渡，其基本红外输出辐射在蓝色光谱区域中被谐波地加倍。 本发明应用于流式细胞术，免疫测定，DNA测序和其他生物荧光仪器中使用的生物荧光染料（在〜490-496nm光谱区域）的激发。 优选的主体晶体在〜980〜〜992nm的光谱范围内具有强的ZPL荧光（激光）跃迁（因此当倍频时，它们在490至496nm的光谱范围内产生输出辐射）。 替代优选的Yb掺杂的钨酸盐晶体，例如Yb：KY（WO4）2，可以被配置为在接近981nm的谐振ZPL跃迁上（代替正常的1025nm跃迁）。 然后将激光以490.5nm的蓝色加倍。
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4.发明授权Low-phonon-frequency chalcogenide crystalline hosts for rare earth lasers operating beyond three microns 失效用于超过三微米的稀土激光器的低声子频率硫族化物晶体主机
公开(公告)号：US6047013A
公开(公告)日：2000-04-04
申请号：US235650
申请日：1999-01-22
申请人： Stephen A. Payne , Ralph H. Page , Kathleen I. Schaffers , Michael C. Nostrand , William F. Krupke , Peter G. Schunemann
发明人： Stephen A. Payne , Ralph H. Page , Kathleen I. Schaffers , Michael C. Nostrand , William F. Krupke , Peter G. Schunemann
IPC分类号： H01S3/16
CPC分类号： H01S3/16 , H01S3/1603 , H01S3/163
摘要： The invention comprises a RE-doped MA.sub.2 X.sub.4 crystalline gain medium, where M includes a divalent ion such as Mg, Ca, Sr, Ba, Pb, Eu, or Yb; A is selected from trivalent ions including Al, Ga, and In; X is one of the chalcogenide ions S, Se, and Te; and RE represents the trivalent rare earth ions. The MA.sub.2 X.sub.4 gain medium can be employed in a laser oscillator or a laser amplifier. Possible pump sources include diode lasers, as well as other laser pump sources. The laser wavelengths generated are greater than 3 microns, as becomes possible because of the low phonon frequency of this host medium. The invention may be used to seed optical devices such as optical parametric oscillators and other lasers.
摘要翻译： 本发明包括RE掺杂的MA2X4晶体增益介质，其中M包括二价离子如Mg，Ca，Sr，Ba，Pb，Eu或Yb; A选自包括Al，Ga和In的三价离子; X是硫属元素离子S，Se和Te之一; RE表示三价稀土离子。 MA2X4增益介质可用于激光振荡器或激光放大器。 可能的泵浦源包括二极管激光器以及其他激光泵源。 所产生的激光波长大于3微米，因为该主机介质的低声子频率是可能的。 本发明可以用于种子光学装置，例如光参量振荡器和其它激光器。
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公开(公告)号：US4811349A
公开(公告)日：1989-03-07
申请号：US176014
申请日：1988-03-31
CPC分类号： H01S3/16 , C30B13/00 , C30B29/12 , H01S3/1623 , H01S3/1648
摘要： Chromium doped colquiriite, LiCaAlF.sub.6 :Cr.sup.3+, is useful as a tunable laser crystal that has a high intrinsic slope efficiency, comparable to or exceeding that of alexandrite, the current leading performer of vibronic sideband Cr.sup.3+ lasers. The laser output is tunable from at least 720 nm to 840 nm with a measured slop efficiency of about 60% in a Kr laser pumped laser configuration. The intrinsic slope efficiency (in the limit of large output coupling) may approach the quantum defect limited value of 83%. The high slope efficiency implies that excited state absorption (ESA) is negligible. The potential for efficiency and the tuning range of this material satisfy the requirements for a pump laser for a high density storage medium incorporating Nd.sup.3+ or Tm.sup.3+ for use in a multimegajoule single shot fusion research facility.
摘要翻译： 铬掺杂的氯氰菊酯LiCaAlF6：Cr3 +可用作具有高固有斜率效率的可调谐激光晶体，与目前领先的振动边带Cr3 +激光器的领先业者亚历山大相比或相当。 在Kr激光泵浦激光器配置中，激光输出可以从至少720nm到840nm可调，测量的斜率效率约为60％。 本征斜率效率（大输出耦合极限）可能接近83％的量子缺陷限制值。 高斜率效率意味着激发态吸收（ESA）可以忽略不计。 这种材料的效率和调谐范围的潜力满足了用于在多焦耳单喷射聚变研究设施中使用的Nd3 +或Tm3 +的高密度存储介质的泵浦激光器的要求。
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6.发明授权Optical amplifier operating at 1.3 microns useful for telecommunications and based on dysprosium-doped metal chloride host materials 失效工作在1.3微米的光放大器可用于电信和基于镝掺杂的金属氯化物主体材料
公开(公告)号：US5694500A
公开(公告)日：1997-12-02
申请号：US546851
申请日：1995-10-23
申请人： Ralph H. Page , Kathleen I. Schaffers , Stephen A. Payne , William F. Krupke , Raymond J. Beach
发明人： Ralph H. Page , Kathleen I. Schaffers , Stephen A. Payne , William F. Krupke , Raymond J. Beach
CPC分类号： H01S3/16 , G02B6/102 , H01S3/094092 , H01S3/094096 , H01S3/1606
摘要： Dysprosium-doped metal chloride materials offer laser properties advantageous for use as optical amplifiers in the 1.3 .mu.m telecommunications fiber optic network. The upper laser level is characterized by a millisecond lifetime, the host material possesses a moderately low refractive index, and the gain peak occurs near 1.31 .mu.m. Related halide materials, including bromides and iodides, are also useful. The Dy.sup.3+ -doped metal chlorides can be pumped with laser diodes and yield 1.3 .mu.m signal gain levels significantly beyond those currently available.
摘要翻译： 掺杂镝的金属氯化物材料提供有利于在1.3微米电信光纤网络中用作光放大器的激光特性。 上激光水平的特征在于毫秒的寿命，主体材料具有适度的低折射率，增益峰出现在1.31μm附近。 相关的卤化物物质，包括溴化物和碘化物，也是有用的。 Dy3 +掺杂的金属氯化物可以用激光二极管泵浦，并且产生1.3μm的信号增益水平显着超过目前可用的。
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公开(公告)号：US5105434A
公开(公告)日：1992-04-14
申请号：US698038
申请日：1991-05-10
IPC分类号： H01S3/0941 , H01S3/106 , H01S3/16
CPC分类号： H01S3/16 , H01S3/0941 , H01S3/1062 , H01S3/1623 , H01S3/1648
摘要： An all-solid-state laser system is disclosed wherein the laser is pumped in the longwave wing of the pump absorption band. By utilizing a laser material that will accept unusually high dopant concentrations without deleterious effects on the crystal lattice one is able to compensate for the decreased cross section in the wing of the absorption band, and the number of pump sources which can be used with such a material increases correspondingly. In a particular embodiment a chromium doped colquiriite-structure crystal such as Cr:LiSrAlF.sub.6 is the laser material. The invention avoids the problems associated with using AlGaInP diodes by doping the Cr:LiSrAlF.sub.6 heavily to enable efficient pumping in the longwave wing of the absorption band with more practical AlGaAs diodes.
摘要翻译： 公开了一种全固体激光系统，其中激光被泵送在泵吸收带的长波翼中。 通过利用将接受异常高的掺杂剂浓度而不对晶格造成有害影响的激光材料，能够补偿吸收带的翼中减小的横截面，以及能够与这种 材料相应增加。 在一个具体实施方案中，铬掺杂的氯氰菊酯结构如Cr：LiSrAlF 6是激光材料。 本发明避免了使用AlGaInP二极管与Cr：LiSrAlF6重掺杂相关的问题，以便能够在较为实用的AlGaAs二极管的吸收带的长波翅膀中有效地泵浦。
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8.发明授权Transition-metal doped sulfide, selenide, and telluride laser crystal and lasers 失效过渡金属掺杂硫化物，硒化物和碲化物激光晶体和激光器
公开(公告)号：US5541948A
公开(公告)日：1996-07-30
申请号：US346457
申请日：1994-11-28
IPC分类号： H01S3/16
CPC分类号： H01S3/16 , H01S3/1621 , H01S3/1623 , H01S3/1628
摘要： A new class of solid state laser crystals and lasers are formed of transition metal doped sulfide, selenide, and telluride host crystals which have four fold coordinated substitutional sites. The host crystals include II-VI compounds. The host crystal is doped with a transition metal laser ion, e.g., chromium, cobalt or iron. In particular, Cr.sup.2+ -doped ZnS and ZnSe generate laser action near 2.3 .mu.m. Oxide, chloride, fluoride, bromide and iodide crystals with similar structures can also be used. Important aspects of these laser materials are the tetrahedral site symmetry of the host crystal, low excited state absorption losses and high luminescence efficiency, and the d.sup.4 and d.sup.6 electronic configurations of the transition metal ions. The same materials are also useful as saturable absorbers for passive Q-switching applications. The laser materials can be used as gain media in amplifiers and oscillators; these gain media can be incorporated into waveguides and semiconductor lasers.
摘要翻译： 一类新型的固体激光晶体和激光器由过渡金属掺杂的硫化物，硒化物和碲化物主体晶体形成，它们具有四个重叠的配位置。 主体晶体包括II-VI化合物。 主体晶体掺杂有过渡金属激光离子，例如铬，钴或铁。 特别是Cr2 +掺杂的ZnS和ZnSe在2.3μm附近产生激光作用。 也可以使用具有相似结构的氧化物，氯化物，氟化物，溴化物和碘化物晶体。 这些激光材料的重要方面是主晶体的四面体位置对称性，低激发态吸收损耗和高发光效率，以及过渡金属离子的d4和d6电子结构。 相同的材料也可用作无源Q开关应用的可饱和吸收器。 激光材料可用作放大器和振荡器中的增益介质; 这些增益介质可以并入到波导和半导体激光器中。
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9.发明授权Ytterbium- and neodymium-doped vanadate laser hose crystals having the apatite crystal structure 失效具有磷灰石晶体结构的镱和钕掺杂的钒酸盐激光软管晶体
公开(公告)号：US5341389A
公开(公告)日：1994-08-23
申请号：US72951
申请日：1993-06-08
CPC分类号： H01S3/16 , C30B15/00 , C30B29/12 , H01S3/1671
摘要： Yb.sup.3+ and Nd.sup.3+ doped Sr.sub.5 (VO.sub.4).sub.3 F crystals serve as useful infrared laser media that exhibit low thresholds of oscillation and high slope efficiencies, and can be grown with high optical quality. These laser media possess unusually high absorption and emission cross sections, which provide the crystals with the ability to generate greater gain for a given amount of pump power. Many related crystals such as Sr.sub.5 (VO.sub.4).sub.3 F crystals doped with other rare earths, transition metals, or actinides, as well as the many structural analogs of Sr.sub.5 (VO.sub.4).sub.3 F, where the Sr.sup.2+ and F.sup.- ions are replaced by related chemical species, have similar properties.
摘要翻译： Yb3 +和Nd3 +掺杂的Sr5（VO4）3F晶体作为有效的红外激光介质，具有较低的振荡阈值和较高的斜率效率，可以以高光学质量生长。 这些激光介质具有非常高的吸收和发射截面，为晶体提供了在给定量的泵浦功率下产生更大增益的能力。 许多相关的晶体，如掺杂有其他稀土，过渡金属或锕系元素的Sr5（VO4）3F晶体，以及Sr5（VO4）3F的许多结构类似物，其中Sr2 +和F-离子被相关化学物质所取代 ，具有相似的属性。
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10.发明授权Yb:FAP and related materials, laser gain medium comprising same, and laser systems using same 失效Yb：FAP和相关材料，包括其的激光增益介质和使用其的激光系统
公开(公告)号：US5280492A
公开(公告)日：1994-01-18
申请号：US792792
申请日：1991-11-15
CPC分类号： H01S3/16 , C30B15/00 , C30B29/10 , H01S3/1618
摘要： An ytterbium doped laser material remarkably superior to all others, including Yb:YAG, comprises Ytterbium doped apatite (Yb:Ca.sub.5 (PO.sub.4).sub.3 F) or Yb:FAP, or ytterbium doped crystals that are structurally related to FAP. The new laser material is used in laser systems pumped by diode pump sources having an output near 0.905 microns or 0.98 microns, such as InGaAs and AlInGaAs, or other narrowband pump sources near 0.905 microns or 0.98 microns. The laser systems are operated in either the conventional or ground state depletion mode.
摘要翻译： 包括Yb：YAG在内的掺镱掺杂激光材料包括掺杂镱的掺杂磷灰石（Yb：Ca5（PO4）3F）或Yb：FAP或与FAP结构相关的镱掺杂晶体。 新的激光材料用于由二极管泵浦源泵浦的激光系统，其输出接近0.905微米或0.98微米，例如InGaAs和AlInGaAs，或其他窄0.90微米或0.98微米的窄带泵浦源。 激光系统以常规或基态耗尽模式运行。
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