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41. 发明授权

US3650600A Optical pulse doubler utilizing self-induced transparency 失效
标题翻译：光学脉冲双重使用自感应透明度
公开(公告)号：US3650600A
公开(公告)日：1972-03-21
申请号：US3650600D
申请日：1970-08-13
申请人： IBM
发明人： COURTENS ERIC L
IPC分类号： G02F1/35 , H01S3/107 , G02F1/22
CPC分类号： G02F1/3523 , H01S3/107
摘要： Two circularly polarized components, displaced in both time and space, of a polarized light pulse are obtained in an optically resonant medium when the medium operates under the conditions of self-induced transparency. By operating the resonant medium near, but not at, exact resonance and therefor at a position slightly displaced from the absorption resonance line of the medium, application of an axial magnetic field causes an impinging polarized light pulse to be separated into two circularly polarized components.
摘要翻译：当介质在自诱导透明度的条件下运行时，在光学共振介质中获得偏振光脉冲的时间和空间两个偏移的两个圆偏振分量。通过在与介质的吸收共振线稍微偏移的位置处操作谐振介质附近而不是精确的谐振，施加轴向磁场使得入射偏振光脉冲被分离成两个圆偏振分量。

42. 发明授权

US3628044A Second harmonic laser 失效
标题翻译：第二和谐激光
公开(公告)号：US3628044A
公开(公告)日：1971-12-14
申请号：US3628044D
申请日：1969-04-14
申请人： SANDERS ASSOCIATES INC
发明人： YOUNG DONALD S , HANCOCK JOHN S
IPC分类号： H01S3/08 , H01S3/107 , H01S3/109 , H02M5/00 , H01S3/10
CPC分类号： H01S3/107 , H01S3/0809 , H01S3/109
摘要： An improved second harmonic laser comprises a resonant cavity having disposed in axial alignment therein an active laser material, a second harmonic generating crystal, an electro-optic polarizing crystal and a polarization selector. The output end of the laser cavity comprises a pair of mirrors which have different preselected reflecting properties with respect to the fundamental and second harmonic laser wavelengths.

43. 发明授权

US3582819A Device for internal modulation of laser radiation 失效
标题翻译：激光辐射内部调制装置
公开(公告)号：US3582819A
公开(公告)日：1971-06-01
申请号：US3582819D
申请日：1968-08-23
申请人： SIEMENS AG
发明人： MULLER RUDOLF , GURS KARL
IPC分类号： G02F1/01 , H01S3/05 , H01S3/082 , H01S3/083 , H01S3/105 , H01S3/106 , H01S3/107 , H01S3/11 , H04B10/00 , H04B10/50 , H01S3/00 , H04B9/00
CPC分类号： H01S3/115 , G02F1/01 , H01S3/08036 , H01S3/105 , H01S3/106 , H01S3/107 , H01S3/1075 , H04B10/505
摘要： Apparatus for emitting amplitude-modulated radiation with a low distortion-noise factor comprises a laser resonator forming an internal path for radiation generated internally of the resonator. At least two electrically controllable radiation modulating and decoupling devices form part of the resonator and are mutually spaced in the path for modulating respective portions of the radiation and decoupling it out of the resonator. An electrical push-pull circuit connected to the modulating and decoupling devices operates such devices simultaneously at the modulating frequency for push-pull modulation of the laser radiation issuing from the resonator to provide at least two complementary radiations.

44. 发明授权

US3444479A Method and apparatus for producing a frequency modulated laser beam 失效
标题翻译：用于生产频率调制激光束的方法和装置
公开(公告)号：US3444479A
公开(公告)日：1969-05-13
申请号：US3444479D
申请日：1965-02-02
申请人： SYLVANIA ELECTRIC PROD
发明人： HARRIS STEPHEN E , TARG RUSSELL
IPC分类号： H01S3/107 , H01S3/05 , H01S3/10 , H01S3/22
CPC分类号： H01S3/107

45. 发明授权

US3436678A Laser capable of continuous frequency tuning 失效
标题翻译：可激光连续频率调谐
公开(公告)号：US3436678A
公开(公告)日：1969-04-01
申请号：US3436678D
申请日：1965-07-19
申请人： SPERRY RAND CORP
发明人： SHARP JAMES K , VAHER EO
IPC分类号： G02F1/21 , H01S3/08 , H01S3/083 , H01S3/107 , H01S3/00
CPC分类号： H01S3/083 , G02F1/21 , H01S3/08 , H01S3/107

46. 发明授权

US3435370A High speed laser frequency selector 失效
公开(公告)号：US3435370A
公开(公告)日：1969-03-25
申请号：US3435370D
申请日：1965-12-16
申请人： IBM
发明人： HARRIS THOMAS J , MAX ERHARD
IPC分类号： H01S3/05 , H01S3/107
CPC分类号： H01S3/1075 , H01S3/107

47. 发明授权

US3435226A Optical pulse generator 失效
公开(公告)号：US3435226A
公开(公告)日：1969-03-25
申请号：US3435226D
申请日：1965-10-20
申请人： BELL TELEPHONE LABOR INC
发明人： RACK ALOIS J
IPC分类号： G02F3/00 , G06E1/06 , H01S3/107 , H03K3/42 , H04B9/00
CPC分类号： H03K3/42 , G02F3/00 , G06E1/06 , H01S3/107

48. 发明授权

US3418476A Device for internal modulation of laser radiation 失效
标题翻译：用于激光辐射内部调制的装置
公开(公告)号：US3418476A
公开(公告)日：1968-12-24
申请号：US35830364
申请日：1964-04-08
申请人： SIEMENS AG
发明人： RUDOLF MULLER , KARL GURS
IPC分类号： G02F1/01 , H01S3/05 , H01S3/082 , H01S3/083 , H01S3/105 , H01S3/106 , H01S3/107 , H01S3/11 , H04B10/00 , H04B10/50
CPC分类号： H01S3/115 , G02F1/01 , H01S3/08036 , H01S3/105 , H01S3/106 , H01S3/107 , H01S3/1075 , H04B10/505
摘要： 1,068,052. Modulating laser and maser radiation. SIEMENS A.G. April 13, 1964 [April 11, 1963; April 16, 1963; May 22, 1963], No. 15099/64. Heading H1C. The oscillatory radiation path in a laser or maser extends through a modulator which is controllable so that variable proportions of the laser or maser radiation may be retained in the radiation path and picked off from the path. In Fig. 1, laser element 1 lies in a resonant cavity 2, 2 1 , partial reflector 2 forming with a partial reflector 4 a further cavity containing a control element 5, the refractive index is varied by means of a modulating electric field. The assembly 2, 4, 5 forms a variable reflectivity interference mirror allowing the proportions of radiation picked off and retained to be varied. The assembly is adjusted so that a mean beam intensity is picked off in the absence of a modulating field, or element 5 is D.C. biased. In a push-pull system (Fig. 3, not shown) a similar interference mirror is arranged at the opposite end of the laser element, the control elements of the two assemblies being energized in antiphase. In this arrangement the radiation retained is unchanged by the modulation. In a modification, Fig. 4, control elements 325, 325 1 operated in push-pull vary the plane of polarization of the oscillatory radiation and Nicol prisms 324, 324 1 , 324 11 separate the differently polarized components. Output beams 326, 326 1 , 327, 3271 are obtained. Prism 3241 may be omitted, beam 327 then having an intensity equal to the combined intensities of the original beams 327, 327 1 . If the modulation frequency is low both prisms 324 1 and 324 11 may be omitted. A non-push-pull arrangement is also described (Fig. 2, not shown) in which a single prism and a single control element are used. In Fig. 5 the radiation circulates around a closed path, a unidirectional coupler 336 defining the direction of circulation. Control elements 332, 332 1 are placed in a waveguide (Fig. 6, not shown) and microwave radiation is passed from a source (344) through element 332 (342) is phasereversed and is then passed through element 332 1 (342 1 ) to a non-reflective termination (345). The relationship between the time taken for the modulating beam to travel from element 332 to element 332 1 in the waveguide and the time taken for the laser beam to travel between the two members is selected so that operation is push-pull, and the relationship may be such that push-pull operation is achieved without phase reversal of the microwave radiation. For high modulation frequencies elements 332, 332 1 are combined and the relationship between the travel time for the laser beam and the period of the modulating wave is suitably selected. The laser element may be a monocrystalline solid, e.g. ruby, a gaseous medium, a junction semi-conductor crystal (either a PN-junction or a junction between regions having different doping levels) or a semi-conductor crystal without a junction. The control element may be either electrically or magnetically controllable and may be a KDP or ADP crystal or a nitrobenzene cell. In the embodiments of Fig. 4 and 5 the Nicol prisms may be replaced by Wollaston or Rochon prisms. Element 5 in the embodiment of Fig. 1 may consist of a series of dielectric layers of different refractive indices, at least one layer being controllable by the modulating signal. It is also stated that modulation at low frequencies may be achieved by varying the separation between mirrors 2 and 4. In all the embodiments the control electrodes may form the semi-reflecting surfaces of the resonant cavity or cavities, and the various elements may be cemented together.

49. 发明授权

US3229223A Laser modulation system having internal polarization vector selection 失效
标题翻译：具有内部极化矢量选择的激光调制系统
公开(公告)号：US3229223A
公开(公告)日：1966-01-11
申请号：US22241062
申请日：1962-09-10
申请人： RCA CORP
发明人： ARTHUR MILLER
IPC分类号： H01S3/107
CPC分类号： H01S3/107

50. 发明授权

US12136794B2 Laser assembly for an optoacoustic probe 有权
公开(公告)号：US12136794B2
公开(公告)日：2024-11-05
申请号：US18475948
申请日：2023-09-27
申请人： Seno Medical Instruments, Inc.
发明人： Tam Do , Xavier Saenz
IPC分类号： H01S3/115 , A61B5/00 , H01S3/06 , H01S3/067 , H01S3/10 , H01S3/102 , H01S3/107 , H01S3/13
CPC分类号： H01S3/115 , A61B5/0095 , H01S3/0627 , H01S3/1024 , H01S3/107 , H01S3/06708 , H01S3/10038 , H01S3/1305
摘要： A laser assembly is provided that includes a laser resonator that emits a first light having a first pulse width, and a trigger assembly electrically coupled to the laser resonator to actuate the laser resonator. The laser assembly also includes a sensor configured to detect the first light as the light emits from the laser resonator, and one or more processors coupled to the trigger assembly. The one or more processors are configured to obtain a first time delay interval from when the trigger assembly is actuated to when the sensor detects the first light, and actuate the laser resonator to emit a second light having a second pulse width based on the time delay interval determined.

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