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公开(公告)号：US6154598A
公开(公告)日：2000-11-28
申请号：US995445
申请日：1997-12-22
申请人： Pavle Gavrilovic , Anish K. Goyal , Hong Po , Shobha Singh
发明人： Pavle Gavrilovic , Anish K. Goyal , Hong Po , Shobha Singh
CPC分类号： H01S3/06716 , H01S3/094092 , H01S3/1603 , H01S3/1698
摘要： An optical waveguide laser, preferably a fiber laser, has unintentionally incorporated impurities disposed in the lasing medium which upconvert a portion of the lasing radiation to radiation of shorter wavelength, thereby introducing defects in the medium which result in increased absorption due to photodarkening. Suitable rare-earth co-dopants are intentionally incorporated during the manufacture of the fiber for effectively shunting the upconversion process. The lifetime of the fiber laser is thereby increased.
摘要翻译： 光波导激光器，优选光纤激光器，无意中并入设置在激光介质中的杂质，其将激光辐射的一部分上转换成较短波长的辐射，从而在介质中引入缺陷，导致由于光暗化而增加的吸收。 在制造纤维期间有意地掺入合适的稀土共掺杂剂，以有效地分流上转换过程。 光纤激光器的寿命由此增加。
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公开(公告)号：US5295146A
公开(公告)日：1994-03-15
申请号：US75861
申请日：1993-06-11
申请人： Pavle Gavrilovic , Shobha Singh
发明人： Pavle Gavrilovic , Shobha Singh
IPC分类号： H01S3/06 , H01S3/08 , H01S3/0941 , H01S3/109 , H01S3/16
CPC分类号： H01S3/0627 , H01S3/025 , H01S3/0604 , H01S3/08045 , H01S3/09415 , H01S3/109 , H01S3/1603 , H01S3/1673
摘要： Novel solid state gain mediums provide monolithic lasers with short cavity lengths and with the ability to efficiently lase in the lowest order TEM.sub.00 mode. Unoptimized optical power conversion efficiency of 35% has been achieved with the novel solid state gain mediums in monolithic lasers that have a cavity length as short as 0.5 mm. With proper values for the output mirror reflectivity and low loss host crystals, the optical power conversion efficiency is approximately 50%. Moreover, when in optical contact with a frequency doubling optically non linear crystal, the novel solid state gain mediums in the monolithic lasers can produce coherent visible light.
摘要翻译： 新型固态增益介质提供具有短腔长度的单片激光器，并具有以最低阶TEM00模式有效驱动的能力。 在单体激光器中具有短达0.5mm的空腔长度的新型固态增益介质已经实现了35％的未优化的光功率转换效率。 对于输出镜反射率和低损耗主晶体的适当值，光功率转换效率约为50％。 此外，当与倍频光学非线性晶体光学接触时，单片激光器中的新型固态增益介质可以产生相干可见光。
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公开(公告)号：US5280534A
公开(公告)日：1994-01-18
申请号：US22483
申请日：1993-02-25
申请人： Pavle Gavrilovic , Shobha Singh
发明人： Pavle Gavrilovic , Shobha Singh
摘要： A crystalline material for use in a solid state tunable laser is YAG:Mn wherein the Mn is predominantly trivalent. The laser is tunable in the yellow-orange range (0.59-0.63 .mu.m) and the near infrared range (1.04-1.2 .mu.m).
摘要翻译： 用于固态可调激光器的结晶材料是YAG：Mn，其中Mn主要是三价的。 激光可以在黄橙色范围（0.59-0.63（my）m）和近红外范围（1.04-1.2（my）m））内调节。
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公开(公告)号：US5388114A
公开(公告)日：1995-02-07
申请号：US210037
申请日：1994-03-17
CPC分类号： H01S3/109 , G02F1/37 , H01S2302/00 , H01S3/0604 , H01S3/0627 , H01S3/1095 , H01S3/113
摘要： A diode-pumped monolithic laser is fabricated from a self-doubling host material co-doped with two ionic species, where one ionic dopant converts pump radiation to continuous radiation at a fundamental frequency and the other dopant acts as a saturable absorber to Q-switch the fundamental radiation which is then frequency doubled to produce pulsed high-intensity green light, the green light being either outputted or further frequency-doubled, into pulsed coherent UV radiation, by means of a non-linear crystal.
摘要翻译： 二极管泵浦的单片激光器由共同掺杂两种离子物质的自加倍主体材料制成，其中一个离子掺杂剂将泵浦辐射转换成基频的连续辐射，另一个掺杂剂作为Q开关的饱和吸收剂 基本辐射然后被倍频以产生脉冲高强度绿光，绿色光被输出或进一步加倍，通过非线性晶体进入脉冲相干UV辐射。
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公开(公告)号：US5166948A
公开(公告)日：1992-11-24
申请号：US718344
申请日：1991-06-19
申请人： Pavle Gavrilovic , Shobha Singh
发明人： Pavle Gavrilovic , Shobha Singh
CPC分类号： C09K11/7772 , C09K11/7771 , G02F2/02 , G06K15/1247
摘要： An up converting method and apparatus includes a crystalline structure responsive to light emitted from pump light for producing visible and/or ultraviolet light therefrom which is of a shorter wavelength than the pump light. This crystalline structure comprises a composition containing active ions of trivalent rare earth elements and a host material of either anhydrous rare earth halides or rare earth oxysulfides. This crystalline structure is represented by the atomic formula M.sub.(1-x) R.sub.x Z.sub.3 or M.sub.2(1-x) R.sub.2x O.sub.2 S where M comprises at least one rare earth element selected from the group comprising cerium, gadolinium, yttrium, lanthanum, and mixtures thereof, R is a dopant selected from the group comprising neodymium, thulium, erbium, holmium, samarium, and mixtures thereof, x is a value in the range from 0.005 to 1.0, and Z is a halogen selected from the group comprising chlorine, bromine, and iodine. When optically pumped, the crystalline structure produces visible and/or ultraviolet light by either a direct or indirect two step up conversion process. An electronic printing apparatus can also use the up converting crystalline structures to expose photosensitive media in the manner of this invention.
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公开(公告)号：US5917969A
公开(公告)日：1999-06-29
申请号：US24535
申请日：1998-02-17
CPC分类号： H01S3/302 , G02F1/3515 , H01S3/06754 , H01S3/10015
摘要： An all-optical modulator for modulating the output power of a high-power optical pump source is disclosed. More particularly, with the optical modulator of the invention, the output power of a CW fiber laser is modulated by a low-power laser, such as a diode laser. The modulator comprises two optical couplers which are preferably wavelength-selective and interconnected by a nonlinear single mode optical fiber with a high Raman gain. A laser system comprising a high-power pump laser, a fast signal laser with a suitable modulation depth and the optical modulator of the invention can advantageously employed in materials processing and graphics arts printing applications.
摘要翻译： 公开了一种用于调制高功率光泵浦源的输出功率的全光调制器。 更具体地，利用本发明的光调制器，CW光纤激光器的输出功率由诸如二极管激光器的低功率激光器调制。 调制器包括两个光耦合器，其优选地是波长选择性的并且通过具有高拉曼增益的非线性单模光纤互连。 包括高功率泵浦激光器，具有适当调制深度的快速信号激光器和本发明的光学调制器的激光系统可以有利地用于材料处理和图形艺术打印应用中。
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公开(公告)号：US06724524B1
公开(公告)日：2004-04-20
申请号：US09641579
申请日：2000-08-18
申请人： Alan F. Evans , Ashiqur Rahman , Stuart Gray , Pavle Gavrilovic
发明人： Alan F. Evans , Ashiqur Rahman , Stuart Gray , Pavle Gavrilovic
IPC分类号： H01S330
CPC分类号： H04B10/2942 , H01S3/06754 , H01S3/094003 , H01S3/094096 , H01S3/1301 , H01S3/302 , H04B10/2916
摘要： A Raman fiber amplifier includes: a transmission fiber; at least one optical pump providing optical pump power to the transmission fiber; and at least one pump power detector; at least one signal detector detecting signal power propagating through the transmission fiber. The Raman fiber amplifier also includes a controller that adjusts the pump power provided by the pump to adjust, gain, or signal power provided by this Raman fiber amplifier.
摘要翻译： 拉曼光纤放大器包括：传输光纤; 至少一个光泵向所述传输光纤提供光泵功率; 和至少一个泵功率检测器; 至少一个信号检测器检测通过传输光纤传播的信号功率。 拉曼光纤放大器还包括一个控制器，调节由泵提供的泵浦功率，以调节，增益或由该拉曼光纤放大器提供的信号功率。
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8.发明授权Optical amplification using launched signal powers selected as a function of a noise figure 有权使用发射信号功率的光放大作为噪声系数的函数公开(公告)号：US06819479B1
公开(公告)日：2004-11-16
申请号：US10028576
申请日：2001-12-20
IPC分类号： H01S300
CPC分类号： H01S3/06754 , H01S2301/02
摘要： In one embodiment, an optical amplifier includes a gain medium operable to receive a plurality of signals each having a center wavelength and a noise figure associated with at least a portion of the amplifier and varying as a function of wavelength. At least two of the plurality of signals have launch powers that are a function of a magnitude of the noise figure measured at or near the center wavelength of that signal.
摘要翻译： 在一个实施例中，光放大器包括增益介质，其可操作以接收多个信号，每个信号具有与放大器的至少一部分相关联的中心波长和噪声系数，并随波长变化。 多个信号中的至少两个具有作为在该信号的中心波长处或附近测量的噪声系数的大小的函数的发射功率。
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9.发明申请System and method for suppression of stimulated Brillouin scattering in optical transmission communications 审中-公开用于抑制光传输通信中受激布里渊散射的系统和方法公开(公告)号：US20060188267A1
公开(公告)日：2006-08-24
申请号：US11067418
申请日：2005-02-23
IPC分类号： H04B10/04
CPC分类号： H04B10/2537
摘要： An optical transmitter includes a light source and an SBS suppression circuit coupled to the light source. The light source is operable to generate an optical signal having one or more wavelengths. The optical signal has a signal spectrum having an upper band limit and a lower band limit. The SBS suppression circuit is operable to communicate a noise current for receipt by the light source. The noise current is operable to broaden the signal spectrum of the optical signal. The light source operates to convert the noise current into a noise component of the signal spectrum that resides between the upper band limit and the lower band limit.
摘要翻译： 光发射机包括耦合到光源的光源和SBS抑制电路。 光源可操作以产生具有一个或多个波长的光信号。 光信号具有具有上限限和下带限的信号频谱。 SBS抑制电路可操作以传送噪声电流以供光源接收。 噪声电流可操作以扩大光信号的信号频谱。 光源用于将噪声电流转换成驻留在上限限和下限极限之间的信号频谱的噪声分量。
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10.发明授权公开(公告)号：US06810214B2
公开(公告)日：2004-10-26
申请号：US09811067
申请日：2001-03-16
IPC分类号： H04B1000
CPC分类号： H04B10/2941 , H04B10/2537
摘要： In one aspect of the invention, a system operable to reduce degradation of an optical signal to noise ratio where signals having multiple wavelengths are communicated over a common optical link includes an amplifier assembly operable to introduce to a lower communication band a first gain and to introduce to a higher communication band a second gain that is different from the first gain. In addition, the system is operable to introduce a variable gain tilt into at least one of the communication bands. The different gains introduced to the higher and lower bands and the variable gain tilt introduced into at least one of the bands result in a reduction of a degradation of optical signal to noise ratio that could otherwise be caused by wavelength dependent attenuation when the communication bands are combined and communicated over an optical link.
摘要翻译： 在本发明的一个方面，一种可操作以减少光信噪比的劣化的系统，其中具有多个波长的信号通过公共光链路进行通信，该放大器组件可操作以向较低通信频带引入第一增益并引入 向较高通信频带提供不同于第一增益的第二增益。 此外，该系统可操作地将可变增益倾斜引入到至少一个通信频带中。 引入到较高和较低频带的不同增益和引入至少一个频带中的可变增益倾斜导致光信噪比的降低，否则当通信频带为 通过光链路组合和传送。
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