专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

121. 发明申请

US20090074015A1 LASER OUTPUT SWITCHING BY TRANSVERSE MODE MODULATION 失效
标题翻译：通过横向模式调制的激光输出开关
公开(公告)号：US20090074015A1
公开(公告)日：2009-03-19
申请号：US12298873
申请日：2007-04-30
申请人： Johan Stiens , Werner Vandermeiren
发明人： Johan Stiens , Werner Vandermeiren
IPC分类号： H01S3/098 , H01S3/00
CPC分类号： H01S3/11 , H01S3/0804 , H01S3/0805 , H01S3/08063 , H01S3/1062
摘要： A pulsed laser for machining, has a mode switch, e.g. Q-switch device (15, 30, 40), in a resonant optical cavity (20) capable of supporting a given lasing mode, e.g. a transverse mode of oscillation when lasing action is started, arranged to induce, e.g. temporarily, a localized change, e.g. loss, in the cavity. The latter alters the given lasing mode, e.g. causes the oscillation to hop to a higher transverse mode temporarily, which on its hand may be extinguished by an aperture limiting diaphragm (5) or equivalent and subsequently reduce the induced loss temporarily, to return the oscillation to the given transverse mode and output the laser pulse. A modulator can be used for inducing the temporary loss for a first transverse lasing mode and extinguishing the higher transverse mode with a diaphragm. The induced loss can be over a localized area much smaller than the dimensions of a beam of the laser, so that a miniaturized modulator can be used. In this way pulsed operation may be achieved. Alternatively, a steady switch between modes may be achieved.
摘要翻译：用于加工的脉冲激光器具有模式切换，例如，在能够支持给定的激光模式的谐振光学腔（20）中的Q开关器件（15,30,40）。当开始激光作用时横向振荡模式，被布置成诱导例如暂时地，局部变化，例如损失，在腔里。后者改变了给定的激光模式，例如导致振荡暂时跳到更高的横向模式，其手可能被孔径限制膜片（5）或等效物消灭，随后暂时减小感应损耗，使振荡返回给定的横向模式并输出激光脉冲。调制器可以用于诱导第一横向激光模式的暂时损耗，并用隔膜熄灭较高的横向模式。感应损耗可以超过比激光束的尺寸小得多的局部区域，从而可以使用小型化的调制器。以这种方式可以实现脉冲操作。或者，可以实现模式之间的稳定切换。

122. 发明授权

US07468996B2 External cavity laser tuning element dither servo control 有权
公开(公告)号：US07468996B2
公开(公告)日：2008-12-23
申请号：US11647783
申请日：2006-12-29
申请人： Andrew Daiber , Anand S. Ramalingam , Jiann-Chang Lo , Douglas A. Sprock , William B. Chapman
发明人： Andrew Daiber , Anand S. Ramalingam , Jiann-Chang Lo , Douglas A. Sprock , William B. Chapman
IPC分类号： H01S3/10
CPC分类号： H01S5/141 , H01S3/1062 , H01S5/02248 , H01S5/02415 , H01S5/02438 , H01S5/0617 , H01S5/06804 , H01S5/0687
摘要： According to embodiments of the present invention, an external cavity laser includes one or more tuning elements. At least one modulated voltage signal or dither is used to lock the transmission peak of the two tuning elements to each other. The wavelength of the laser also may lock onto the lock transmission peaks. In embodiments in which two dither signals are used, the dither signals may be orthogonal to or independent of each other. The two dither signals may produce two control signals to align the transmission peak of one filter to the transmission peak of another filter and the lasing mode of the laser to the aligned filters.

123. 发明授权

US07414779B2 Mode locking methods and apparatus 有权
标题翻译：模式锁定方法和装置
公开(公告)号：US07414779B2
公开(公告)日：2008-08-19
申请号：US11337105
申请日：2006-01-20
申请人： Robert Huber , Kenji Taira , James Fujimoto
发明人： Robert Huber , Kenji Taira , James Fujimoto
IPC分类号： H01S3/00
CPC分类号： G01B9/02004 , G01B9/02069 , G01B9/02091 , H01S3/063 , H01S3/067 , H01S3/06725 , H01S3/06791 , H01S3/08013 , H01S3/08027 , H01S3/082 , H01S3/083 , H01S3/106 , H01S3/1062 , H01S3/1068 , H01S3/107 , H01S3/1109 , H01S3/1121 , H01S3/1305 , H01S3/1307 , H01S3/2383 , H01S5/065 , H01S5/141 , H01S5/146 , H01S2301/08
摘要： In one aspect the invention relates to a frequency varying wave generator. The generator includes a gain element adapted to amplify a wave having a wavelength; a time varying tunable wavelength selective filter element in communication with the gain element, the tunable filter element adapted to selectively filter waves during a period T; and a feedback element in communication with the tunable filter element and the gain element, wherein the tunable wavelength selective filter element, the gain element and the feedback element define a circuit such that the roundtrip time for the wave to propagate through the circuit is substantially equal to a non-zero integer multiple of the period T.
摘要翻译：一方面，本发明涉及一种变频波发生器。发生器包括适于放大具有波长的波的增益元件; 与增益元件通信的时变可调波长选择滤波器元件，所述可调谐滤波器元件适于在周期T期间选择性地滤波波; 以及与可调滤波器元件和增益元件通信的反馈元件，其中可调波长选择滤波器元件，增益元件和反馈元件限定电路，使得波在电路中传播的往返时间基本相等到周期T的非零整数倍。

124. 发明申请

US20070002926A1 Thermo-optic tunable laser apparatus 有权
标题翻译：热光可调谐激光装置
公开(公告)号：US20070002926A1
公开(公告)日：2007-01-04
申请号：US11170893
申请日：2005-06-30
申请人： Mark McDonald , Wei Wang
发明人： Mark McDonald , Wei Wang
IPC分类号： H01S3/13 , H01S3/08
CPC分类号： H01S5/02446 , H01S3/105 , H01S3/1062 , H01S5/022 , H01S5/02248 , H01S5/02415 , H01S5/02438 , H01S5/141
摘要： Thermo-optic tuning apparatuses and techniques that may be used in external cavity lasers are provided. A wavelength selection device may be placed in the external cavity and may include a thermally responsive substrate and tunable optical elements extending therefrom. Heating and heat monitoring actuators may be formed in the substrate itself, with the tunable optical elements being mechanically positioned in the recesses of the substrate for thermo-optic tuning. In some examples, a separate optical path length adjustment element is also placed in the thermally responsive substrate, or elsewhere, for separate frequency tuning. This adjustment element may be part of a control that is detangled from the normal servo controls used in laser tuning.
摘要翻译：提供了可用于外腔激光器的热光调谐装置和技术。波长选择装置可以放置在外部空腔中，并且可以包括热响应基板和从其延伸的可调光学元件。加热和热监测致动器可以形成在基板本身中，其中可调光学元件机械地定位在基板的凹部中用于热光学调谐。在一些示例中，单独的光程长度调节元件也放置在热响应衬底或其他地方，用于单独的频率调谐。该调整元件可以是与激光调谐中使用的普通伺服控制器相关的控制的一部分。

125. 发明申请

US20060239319A1 Chip carrier apparatus and method 有权
公开(公告)号：US20060239319A1
公开(公告)日：2006-10-26
申请号：US11451772
申请日：2006-06-12
申请人： William Kozlovsky , Andrew Daiber , Kevin Sawyer
发明人： William Kozlovsky , Andrew Daiber , Kevin Sawyer
IPC分类号： H01S3/04 , H01S3/08
CPC分类号： H01S5/02236 , H01L2224/48091 , H01L2224/48472 , H01S3/1062 , H01S5/02248 , H01S5/02276 , H01S5/02284 , H01S5/02415 , H01S5/02476 , H01S5/06804 , H01S5/141 , H01L2924/00014 , H01L2924/00
摘要： A chip carrier having improver thermal properties, wherein the chip carrier may be formed having waist section, and a first transverse end portion joined to the waist section. A first surface of the carrier being configured to receive a chip thereon, and a second surface of the carrier configured to be coupled to a thermal control unit to provide cooling of the carrier and chip. The chip carrier may have a second transverse end portion joined to the waist portion in certain embodiments.

126. 发明授权

US07061659B2 Thermally tuned filter having a pre-stressed membrane 失效
标题翻译：具有预应力膜的热调节过滤器
公开(公告)号：US07061659B2
公开(公告)日：2006-06-13
申请号：US10813956
申请日：2004-03-31
申请人： Wenhua Ling , Marc Finot , Ralph B. Bettman
发明人： Wenhua Ling , Marc Finot , Ralph B. Bettman
IPC分类号： G02B26/00
CPC分类号： H01S5/02248 , G02B6/4209 , G02F1/0147 , G02F2203/055 , H01S3/1062 , H01S5/005 , H01S5/0064 , H01S5/02284 , H01S5/02415 , H01S5/02446 , H01S5/141
摘要： A thermally tuned filter having a pre-stressed membrane. The thermally tuned filter includes a handle layer, a dielectric layer positioned proximate to the handle layer, and a device layer positioned proximate to the handle layer. The device layer includes an optical device. A pre-stressed membrane is positioned proximate to the device layer; a tensile prestress of the pre-stressed membrane increases the natural frequency of the thermally tuned filter.
摘要翻译：具有预应力膜的热调节过滤器。热调谐滤波器包括手柄层，靠近手柄层定位的电介质层和靠近手柄层定位的器件层。器件层包括光学器件。预应力膜位于装置层附近; 预应力膜的拉伸预应力增加了热调谐过滤器的固有频率。

127. 发明授权

US07027472B2 Fixed wavelength single longitudinal mode coolerless external cavity semiconductor laser system 有权
公开(公告)号：US07027472B2
公开(公告)日：2006-04-11
申请号：US09909330
申请日：2001-07-19
申请人： Dale C. Flanders
发明人： Dale C. Flanders
IPC分类号： H01S3/10
CPC分类号： H01S5/141 , H01S3/105 , H01S3/1062 , H01S5/02248 , H01S5/02284 , H01S5/0687
摘要： A fixed wavelength, external cavity semiconductor laser comprises a semiconductor laser gain medium and an intra-cavity filter having a filter function specifying a frequency of operation of the laser. This distinguishes it from distributed feedback Bragg reflector systems in which the wavelength of operation is dictated by the semiconductor Bragg grating, drive current, and temperature. A cavity length modulation system is further provided that modulates an optical length of the cavity to change the spectral locations of longitudinal modes of the cavity relative to the filter function. One important advantage of the present invention is that it can be deployed without a thermoelectric (TE) cooler. Specifically, the intra-cavity filter material in combination with the cavity length controller, allow a mode of cavity to be located at the filter function. Thus, the temperature of the module can fluctuate with ambient temperature or other operating parameters, but the wavelength is held stable with single longitudinal mode operation of the module being guaranteed.

128. 发明授权

US07027467B2 Fiber laser 失效
标题翻译：光纤激光器
公开(公告)号：US07027467B2
公开(公告)日：2006-04-11
申请号：US10297510
申请日：2001-06-12
申请人： Valeri Baev , Arnold Stark , Stefan Salewski , Wolfgang Thurau , Peter Toschek
发明人： Valeri Baev , Arnold Stark , Stefan Salewski , Wolfgang Thurau , Peter Toschek
IPC分类号： H01S3/30 , H01S3/082
CPC分类号： H01S3/067 , H01S3/06704 , H01S3/08 , H01S3/081 , H01S3/094003 , H01S3/105 , H01S3/1062
摘要： A fiber laser with a fiber for laser light generation having an entrance end and an exit end comprises a pump light source for generating pump light to be coupled via the entrance side into the fiber. At the exit end of the fiber a first resonator mirror is provided which is highly reflecting for the laser light to be generated in the wavelength range with the smallest light amplification and to the light of the pump light source. Spaced from the first resonator mirror a second resonator mirror is provided via which light of further wavelength ranges can be fed back into the fiber with the aid of a collimating lens.
摘要翻译：具有入射端和出射端的用于产生激光的光纤的光纤激光器包括用于产生泵浦光源的泵浦光源，所述泵浦光源经由入口侧耦合到光纤中。在光纤的出口端设有第一谐振镜，该反射镜对于在具有最小光放大的波长范围内的激光和泵浦光源的光产生。由第一谐振镜形成的第二谐振镜是通过借助于准直透镜将另外波长范围的光反馈到光纤中的。

129. 发明授权

US07016096B2 Transmission wavelength characteristics variable optical element, and wavelength characteristics variable apparatus, optical amplifier, and optical transmission system, using same 失效
公开(公告)号：US07016096B2
公开(公告)日：2006-03-21
申请号：US10351376
申请日：2003-01-27
申请人： Hirotomo Izumi , Takashi Ishiwada , Nobuaki Mitamura
发明人： Hirotomo Izumi , Takashi Ishiwada , Nobuaki Mitamura
IPC分类号： G02F1/09 , G03B21/56 , H04B10/12
CPC分类号： G02F1/09 , G02B26/00 , G02F1/21 , G02F2001/213 , G02F2203/05 , H01S3/06754 , H01S3/1003 , H01S3/1062 , H01S3/1301 , H01S2301/04
摘要： An object of the invention is to easily realize an optical element using an etalon type structure, capable of changing a periodic transmission wavelength characteristic in an axial direction of transmissivity, and also capable of changing a periodic characteristic with respect to wavelength. To this end, a transmission wavelength characteristics variable optical element according to the invention comprises: a light interference section including a pair of wedge shape magneto-optic crystals arranged with taper faces thereof in close contact, that can change a distance between reflecting films formed on parallel planes of the magneto-optic crystals, by relatively moving the magneto-optic crystals by movable sections, permanent magnets for applying a fixed magnet field to the pair of magneto-optic crystals, an electromagnet for applying a variable magnetic field in a direction different to the fixed magnetic field, and a variable current source controlling the current flowing into the electromagnet.

130. 发明申请

US20050254529A1 Tunable semiconductor laser 有权
标题翻译：可调谐半导体激光器
公开(公告)号：US20050254529A1
公开(公告)日：2005-11-17
申请号：US11185516
申请日：2005-07-19
申请人： C. Kumar Patel
发明人： C. Kumar Patel
IPC分类号： H01S3/08 , H01S3/10 , H01S5/14
CPC分类号： H01S5/141 , H01S3/0813 , H01S3/105 , H01S3/1062
摘要： A tunable semiconductor laser includes gain medium, wavelength-selective element and a laser mode matching element. The wavelength-selective element comprises a first light absorbing plate operatively coupled to the laser mode matching element and provided with an array of high reflectivity mirrors as well as a second light absorbing plate with an array of narrow band pass filter mirrors operatively coupled to the high reflectivity mirror array of the first plate. The narrow band pass filter mirror array is disposed over a respective array of apertures in the second plate. The wavelength-selective element also comprises a light reflective plate with an array of retroreflectors and a third light absorbing plate with an array of apertures operatively disposed between the aperture array of the second plate and the retroreflector array. Activation of a selected retroreflector results in light of a corresponding wavelength being coupled back to the gain medium through the laser mode matching element and the first, second and third plates.
摘要翻译：可调谐半导体激光器包括增益介质，波长选择元件和激光模式匹配元件。波长选择元件包括可操作地耦合到激光模式匹配元件并且设置有高反射镜的阵列的第一光吸收板以及具有可操作地耦合到高的反射镜的阵列的窄带通滤光镜的第二光吸收板第一板的反射镜阵列。窄带通滤光镜阵列设置在第二板中相应的孔阵列上。波长选择元件还包括具有后向反射器阵列的光反射板和具有可操作地设置在第二板的孔径阵列和后向反射器阵列之间的孔阵列的第三光吸收板。所选择的后向反射器的激活导致相应波长的光通过激光模式匹配元件和第一，第二和第三板耦合回增益介质。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式