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1. 发明授权

EP3095163B1 SERIAL SERVO SYSTEM AND METHOD FOR CONTROLLING AN OPTICAL PATH LENGTH AND A REPETITION FREQUENCY OF A MODE-LOCKED LASER 有权
标题翻译：用于控制模式锁定激光器的光路径长度和重复频率的串行伺服系统和方法
公开(公告)号：EP3095163B1
公开(公告)日：2018-02-28
申请号：EP15702043.9
申请日：2015-01-12
申请人： Raytheon Company
发明人： KNABE, Kevin , DANIELE, Andrew N. , LEYVA, Victor
IPC分类号： H01S3/13 , H01S3/131 , H01S3/136 , H01S3/139
CPC分类号： H01S3/13 , H01S3/06791 , H01S3/1109 , H01S3/1305 , H01S3/1307 , H01S3/1317 , H01S3/136 , H01S3/139
摘要： A servo system includes multiple servo channels being driven by a common error signal. Each channel has a controller that receives an error signal and provides a drive signal to a driver. The servo channels are arranged serially, with a drive signal from one controller forming the error signal for a downstream controller. As a result, the downstream controller does not attempt to correct for phase error directly, but instead attempts to keep the upstream driver at or near its operational midpoint. The servo channels can be arranged in order of decreasing controller bandwidth, from fastest to slowest. In contrast with a parallel configuration, in which servo channels all simultaneously receive a common error signal, the serial configuration can allow each controller to use its full bandwidth, can eliminate crosstalk between servo channels, and can prevent saturation of upstream drive signals.

2. 发明授权

EP2478599B1 WELLENLÄNGENABSTIMMBARE LICHTQUELLE 有权
标题翻译： WELLENLÄNGENABSTIMMBARELICHTQUELLE
公开(公告)号：EP2478599B1
公开(公告)日：2017-09-06
申请号：EP10759845.0
申请日：2010-09-16
申请人： Ludwig-Maximilians-Universität München
发明人： HUBER, Robert, Alexander , KLEIN, Thomas , WIESER, Wolfgang
IPC分类号： H01S5/14 , H01S3/067 , H01S3/083 , H01S3/106 , G01N21/00 , H01S3/11
CPC分类号： H01S5/146 , H01S3/06791 , H01S3/08013 , H01S3/083 , H01S3/1062 , H01S3/1109

3. 发明公开

EP2602885A1 LASER OSCILLATION APPARATUS 有权
标题翻译：激光振荡装置
公开(公告)号：EP2602885A1
公开(公告)日：2013-06-12
申请号：EP11814659.6
申请日：2011-08-03
申请人： Inter-University Research Institute Corporation High Energy Accelerator Research Organization
发明人： HONDA, Yosuke , URAKAWA, Junji
IPC分类号： H01S3/098 , G02F1/01 , H01S3/00 , H01S3/06 , H01S3/083
CPC分类号： H01S3/06791 , G02F1/21 , G02F2201/17 , H01S3/06712 , H01S3/07 , H01S3/082 , H01S3/094007 , H01S3/10007 , H01S3/105 , H01S3/108 , H01S3/1109 , H01S3/1121 , H01S3/1305 , H01S3/1307 , H01S3/1618 , H01S3/2308 , H05G2/00
摘要： Provided is a laser oscillation apparatus capable of stabilizing resonance even when finesse of an optical resonator is increased and generating stronger laser light than that of a traditional apparatus by accumulating laser light in the optical resonator. The laser oscillation apparatus includes a laser light source which generates laser light for excitation, a fiber amplifier which generates laser light with a desired wavelength when the laser light generated at the laser light source for excitation is supplied, an optical resonator, an optical isolator which is interposed between the optical resonator and the fiber amplifier and which guides the laser light from the fiber amplifier to one side of the optical resonator while blocking laser light in the opposite direction, a circulation optical path which accelerates resonance as introducing laser light emitted from the other side of the optical resonator and returning the laser light to the optical resonator via the fiber amplifier and the optical isolator, and a modulator which performs amplitude modulation on the laser light in the circulation optical path.

4. 发明公开

EP2283550A1 APPARATUS AND METHOD FOR GENERATING OPTICAL PULSES 审中-公开
标题翻译：装置及其制造方法的光脉冲
公开(公告)号：EP2283550A1
公开(公告)日：2011-02-16
申请号：EP08760288.4
申请日：2008-05-30
申请人： Telefonaktiebolaget L M Ericsson (PUBL)
发明人： BOGONI, Antonella , POTI, Luca , LAZZERI, Emma , GHELFI, Paolo
IPC分类号： H01S3/11 , H01S3/115 , H01S3/117 , G02F1/225
CPC分类号： H01S3/06791 , G02F2203/54 , H01S3/1062 , H01S3/107 , H01S3/1109
摘要： An apparatus and method for generating a train of optical pulses. The apparatus comprises an optical resonant cavity (1) for confining an optical signal in the cavity to a number of modes, a modulator (3), and a control signal generator (101). The modulator comprises an interferometer arranged to cause interference of the optical signal with itself to produce an output and controllable material, such as an electro-optic crystal, arranged in a path of the optical signal, an optical property of the controllable material dependent on a control signal (3b) applied to the controllable material such that changes in the optical property alter optical signals travelling that path to affect the interference of the optical signals, and therefore the output of the modulator. The control signal generator is arranged to generate the control signal, wherein the control magnitude is an oscillating waveform arranged to cause transmission of the optical signal through the modulator to generate pulses having a pulse width shorter than a pulse width of pulses that would be generated using a sinusoidal waveform of the same frequency.

5. 发明公开

EP2078968A2 Synthetic aperture ladar with chirped modelocked waveform 有权
标题翻译： Synthetischer Laser-Aperturradar mit modengekoppelter Chirp-Wellenform
公开(公告)号：EP2078968A2
公开(公告)日：2009-07-15
申请号：EP09005227.5
申请日：2004-12-07
申请人： Raytheon Company
发明人： Halmos, Maurice J.
IPC分类号： G01S17/10 , G01S7/484
CPC分类号： G01S17/895 , G01S7/484 , G01S17/003 , G01S17/102 , H01S3/105 , H01S3/107 , H01S3/1109 , H01S3/1112
摘要： The present invention uses an intra-cavity modulation approach to modulate a laser transmitter at bandwidths greater than a few gigahertz (GHz) in a non-ambiguous waveform by chirping the laser and simultaneously mode locking. Accordingly, the inventive system includes a source of a beam of electro-magnetic energy; a mechanism for mode locking the beam; and an arrangement for chirping the beam. In the illustrative embodiment, the source is a laser. The mode locking mechanism may be an active element or a passive element. The beam is chirped with a translation mirror. The translation mirror may be driven with a piezo-electric drive coupled. In the best mode, the carrier is chirped with an electro-optical crystal disposed in the cavity of the laser. The laser is chirped to the free-spectral range limit, which is typically a few hundred megahertz, by scanning the optical length of the laser resonator. After simultaneously mode locking, the waveform created is a train of mode locked pulses that have an optical carrier frequency chirped in time.
摘要翻译：本发明使用腔内调制方法通过啁啾激光器和同时模式锁定在非歧义波形中调制大于几吉赫兹（GHz）的带宽的激光发射机。因此，本发明的系统包括电磁能束的源; 用于模式锁定光束的机构; 以及用于啁啾梁的装置。在说明性实施例中，源是激光。模式锁定机构可以是有源元件或无源元件。光束用平移镜啁啾。平移反射镜可以用耦合的压电驱动来驱动。在最佳模式下，载体被配置在激光器腔内的电光晶体啁啾。通过扫描激光谐振器的光学长度，激光器被啁啾到自由光谱范围限制，其通常为几百兆赫兹。在同时模式锁定之后，所产生的波形是一系列模拟锁定脉冲，其具有在时间上啁啾的光载波频率。

6. 发明公开

EP2054979A2 PICOSECOND LASER APPARATUS AND METHODS FOR ITS OPERATION AND USE 有权
标题翻译：皮秒激光器及其操作方法和使用
公开(公告)号：EP2054979A2
公开(公告)日：2009-05-06
申请号：EP07811128.3
申请日：2007-08-02
申请人： Cynosure, Inc.
发明人： SIERRA, Rafael, Armando , MIRKOV, Mirko , WELCHES, Richard, Shaun , HOHM, Dan
IPC分类号： H01S3/11
CPC分类号： A61B18/203 , A61B2017/00769 , A61B2018/00452 , A61B2018/0047 , A61N5/0616 , A61N2005/067 , G02F1/0327 , H01S3/00 , H01S3/107 , H01S3/1103 , H01S3/1109 , H01S3/115
摘要： Apparatuses and methods are disclosed for applying laser energy having desired pulse characteristics, including a sufficiently short duration and/or a sufficiently high energy for the photomechanical treatment of skin pigmentations and pigmented lesions, both naturally- occurring (e g, birthmarks), as well as artificial (e g, tattoos). The laser energy may be generated with an apparatus havin resonator (fig 2) with the capability of switching between a modelocked pulse operating mode and an amplification operating mode. The operating modes are carried out through the application of a time-dependent bias voltage, having waveforms as described herein an electro-optical device (e g, a Pockels cell) positioned along the optical axis of the resonator.

7. 发明公开

EP0937321A4 PICOSECOND LASER 失效
标题翻译： PICODEKUNDERLASER
公开(公告)号：EP0937321A4
公开(公告)日：2002-08-14
申请号：EP97954889
申请日：1997-10-03
申请人： JMAR TECHNOLOGY CO
发明人： RIEGER HARRY , SHIELDS HENRY , FOSTER RICHARD M
IPC分类号： H01S3/127 , G03F7/20 , H01S3/00 , H01S3/0941 , H01S3/098 , H01S3/102 , H01S3/11 , H01S3/23 , H01S1/00
CPC分类号： H01S3/2341 , H01S3/0057 , H01S3/0085 , H01S3/082 , H01S3/094076 , H01S3/0941 , H01S3/09415 , H01S3/1024 , H01S3/1075 , H01S3/1103 , H01S3/1109 , H01S3/1127 , H01S3/115 , H01S3/117 , H01S3/127 , H01S3/23 , H01S3/2316 , H01S3/2333 , H01S3/2383 , H01S2301/08
摘要： A laser system which generates pulses with a duration in the range of about 60 to 300 ps at an energy level of up to a few milli-Joules per pulse with near diffraction limited beam quality. A laser crystal (8) is pumped (excited) by diode lasers (2). A resonator (9) having at least two mirror surfaces defines a beam path passing through the laser crystal (8). The beam path in the resonator (9) is periodically blocked by a first optical shutter (14) permitting pump energy to build up in the laser crystal (8), except for a short period near the end of each pumping period. While the first optical shutter (14) is open a second optical shutter blocks the light in the resonator (9) except for periodic subnano-second intervals, the intervals being spaced such that at least one light pulse traveling at the speed of light in the resonator (9) is able to make a plurality of transits through the resonator (9), increasing in intensity by extracting energy from the excited laser crystal (8) on each transit. After the light pulse has built up in intensity, an optical release mechanism (10) releases the pulse from resonator (9).
摘要翻译：一种激光系统，其产生的脉冲持续时间约为60至300ps，能量水平高达几个毫焦耳每脉冲，具有接近衍射极限的光束质量。激光晶体（8）由二极管激光器（2）泵浦（激发）。具有至少两个镜面的谐振器（9）限定穿过激光晶体（8）的光束路径。谐振器（9）中的光束路径被第一光学快门（14）周期性地阻挡，该第一光学快门允许泵激能量在激光晶体（8）中累积，除了在每个泵激周期结束附近的短时间周期之外。当第一光学快门（14）打开时，第二光学快门阻挡谐振器（9）中的光，除了周期性亚纳米 - 秒间隔，所述间隔被间隔开，使得至少一个光脉冲以谐振器（9）能够通过谐振器（9）进行多次穿越，通过在每次穿越时从激发的激光晶体（8）提取能量而增加强度。在光脉冲强度增强之后，光学释放机构（10）从谐振器（9）释放脉冲。

8. 发明公开

EP0910142A3 Optical pulse generator 审中-公开
标题翻译：光学脉冲发生器
公开(公告)号：EP0910142A3
公开(公告)日：2000-03-01
申请号：EP98308388.2
申请日：1998-10-14
申请人： ANDO ELECTRIC CO., LTD. , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Iida, Rikihiro , Ichikawa, Akio , Kumagai, Yoshihiro , Asahina, Yuka , Nakazawa, Masataka , Yoshida, Eiji
IPC分类号： H01S3/083 , H01S3/067
CPC分类号： H01S3/06791 , H01S3/06725 , H01S3/08 , H01S3/1109
摘要： The object of the present invention is to provide an optical pulse generator which very stably generates for a long period of time a high cycling frequency optical pulse chain. In order to obtain this object, in a ring type resonator R, the present invention provides an optical path length regulator 14 which performs high precision optical path length adjustment and an optical path length regulator 60 which performs wide range optical path length adjustment, and extracts a clock signal by converting an optical pulse emitted from the ring type resonator R to an electrical signal by a clock extractor 42, detects the frequency difference between a base frequency signal output form a synthesizer 52 by a frequency difference detector 50, and controls said optical path length regulator 14 and said optical path length regulator 60.
摘要翻译：本发明的目的是提供一种光脉冲发生器，它非常稳定地长时间产生高循环频率的光脉冲链。为了获得这个目的，在环形谐振器R中，本发明提供了一种执行高精度光路长度调节的光路长度调节器14和一种执行宽范围光路长度调节的光路长度调节器60，通过时钟提取器42将从环型谐振器R发射的光脉冲转换成电信号的时钟信号，检测由频差检测器50从合成器52输出的基频信号之间的频率差，并控制所述光路径长度调节器14和所述光路长度调节器60。

9. 发明公开

EP0971464A2 Optical pulse generator 审中-公开
公开(公告)号：EP0971464A2
公开(公告)日：2000-01-12
申请号：EP99401730.9
申请日：1999-07-09
申请人： ANDO ELECTRIC CO., LTD. , Nippon Telegraph and Telephone Corporation
发明人： Kumagai, Yoshihiro , Ichikawa, Akio , Iida, Rikihiro , Nakazawa, Masataka c/o Nippon Telegr. & Tel. Corp. , Yoshida, Eiji c/o Nippon Telegr. & Tel. Corp.
IPC分类号： H01S3/083 , H01S3/098 , H04B10/155
CPC分类号： H01S3/06791 , G02F2203/26 , H01S3/06754 , H01S3/10038 , H01S3/1109 , H01S3/1121 , H01S3/136 , H04B10/503 , H04B10/508 , H04B10/564
摘要： The invention relates to an optical pulse generator. The optical pulse generator comprises a laser pulse oscillating means (R) for generating an optical pulse by means of harmonic mode locking using a clock (CLK) possessing a predetermined modulation frequency, a clock extracting means (9) for detecting said optical pulse, extracting a signal component of said modulation frequency, and supplying the extracted signal to said laser pulse oscillating means as said clock, and protective means (8, 20) for limiting the optical power of said optical pulse which is emitted from said laser pulse oscillating means to an optical power which said clock extracting means is capable of photo-detecting, and emitting the result to said clock extracting means.

10. 发明公开

EP0723320A3 Mode-locked laser stabilizing method and apparatus 失效
标题翻译： Verfahren und Vorrichtung zur Stabilisierung eines modengekoppelten Lasers
公开(公告)号：EP0723320A3
公开(公告)日：1997-10-22
申请号：EP96400101.0
申请日：1996-01-16
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Takara, Hidehiko , Kawanishi, Satoki , Saruwatari, Masatoshi
IPC分类号： H01S3/098 , H01S3/13
CPC分类号： H01S3/1109 , H01S3/06791 , H01S3/106 , H01S3/1067 , H01S3/139
摘要： This invention is an improvement of a mode-locked laser stabilizing method and apparatus used with a mode-locked laser apparatus which comprises an optical cavity which consists of an optical modulator which modulates the loss or the phase of light at a fixed frequency, an optical delay line to electrically change the optical path length of the cavity, and an optical amplifier which amplifies a modulated optical pulses. In this method, at least one of the relaxation oscillation frequency components and the harmonic components in the output optical pulses of the mode-locked laser are extracted, and a process of controlling the optical delay line by using the extracted frequency component as an error signal for feedback control and to suppress the error signal below a fixed value.
摘要翻译：本发明是对锁模激光装置使用的锁模式激光稳定化方法和装置的改进，其包括光腔，该光腔由调制固定频率的光的损耗或相位的光调制器组成，光学延迟线以电变化腔的光路长度，以及放大调制光脉冲的光放大器。在该方法中，提取了锁模激光器的输出光脉冲中的弛豫振荡频率分量和谐波分量中的至少一个，并且通过使用提取的频率分量作为误差信号来控制光学延迟线的处理用于反馈控制，并将误差信号抑制在固定值以下。

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