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公开(公告)号：US09001853B2
公开(公告)日：2015-04-07
申请号：US13859412
申请日：2013-04-09
Applicant: Thomas James Kane
Inventor： Thomas James Kane
CPC classification number: H01S3/11 , H01S3/0085 , H01S3/0815 , H01S3/083 , H01S3/10092 , H01S3/1083 , H01S3/115 , H01S3/1611 , H01S3/1643 , H01S3/2316 , H01S3/2391
Abstract: Pulsed, coherent light is generated by optical mixing which takes place inside the resonator of a pulsed laser oscillator. One of the beams to be mixed is generated by the pulsed laser, and the other by a distinct, external laser oscillator. If the light from the external oscillator is modulated, that modulation will be transferred onto the light generated by the optical mixing. Using sum frequency generation, light for sodium excitation, such as for a guide star, can be generated with the optimal modulation of spectral and temporal properties. If the pulse repetition frequency is chosen to be at or near the magnetic (Larmor) resonance of the sodium, then the amount of scattered light due to sodium excitation is enhanced, and the magnetic field at the location of the sodium atoms can be measured.
Abstract translation: 脉冲相干光通过在脉冲激光振荡器的谐振器内发生的光学混合产生。 要混合的光束之一是通过脉冲激光产生的，另一个由不同的外部激光振荡器产生。 如果来自外部振荡器的光被调制，则该调制将被转移到由光学混合产生的光上。 使用和频产生，可以利用光谱和时间特性的最佳调制来产生用于钠激发的光，例如导星。 如果选择脉冲重复频率处于或接近钠的磁（拉莫尔）谐振，则由于钠激发而引起的散射光的量增加，并且可以测量钠原子位置处的磁场。
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公开(公告)号：US20230124071A1
公开(公告)日：2023-04-20
申请号：US17965983
申请日：2022-10-14
Applicant: Thomas James Kane , John Lawrence Nightingale
Inventor： Thomas James Kane , John Lawrence Nightingale
Abstract: A passively Q-switched laser with adjustable pulse parameters and a method of controlling the pulse parameters is described. The laser has a pumped spot size in a gain element that may be adjusted to control the pulse energy. The laser has a laser resonator that may have a variable resonator length to control the pulse duration.
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公开(公告)号：US11482828B2
公开(公告)日：2022-10-25
申请号：US16911399
申请日：2020-06-25
Applicant: Thomas James Kane , John Lawrence Nightingale
Inventor： Thomas James Kane , John Lawrence Nightingale
IPC: H01S3/113 , H01S3/08 , H01S3/131 , H01S3/11 , H01S3/04 , H01S3/0941 , H01S3/139 , H01S3/16 , H01S3/06
Abstract: A passively, Q-switched laser operating at an eye safe wavelength of between 1.2 and 1.4 microns is described. The laser may operate at a lasing wavelength of 1.34 microns and use a gain element of Nd:YVO4 and a saturable absorber element of V:YAG. The position of the resonator axial mode spectrum relative to a gain peak of the gain element is controlled to yield desired characteristics in the laser output.
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公开(公告)号：US20220376457A1
公开(公告)日：2022-11-24
申请号：US17739109
申请日：2022-05-07
Applicant: Thomas James Kane , John Lawrence Nightingale
Inventor： Thomas James Kane , John Lawrence Nightingale
Abstract: A passively, Q-switched laser operating at an eye safe wavelength of between 1.2 and 1.4 microns is described. The laser may operate at a lasing wavelength of 1.34 microns and use a gain element of Nd:YVO4 and a saturable absorber element of V:YAG. The systems and methods to produce short pulses having a pulse duration less than 1 ns and high energy pulses having pulse energies greater than 2 μJ are described.
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Patent Agency Ranking
公开(公告)号：US20220368099A1
公开(公告)日：2022-11-17
申请号：US17744705
申请日：2022-05-15
Applicant: Thomas James Kane , John Lawrence Nightingale
Inventor： Thomas James Kane , John Lawrence Nightingale
IPC: H01S3/13 , H01S3/0941 , H01S3/139 , H01S3/131 , G01S7/481 , G01S7/4865
Abstract: A frequency modulated, continuous wave (FMCW) laser using a microchip gain medium, an optical coupling element, and a tuning element is described. The laser may be part of a coherent laser ranging system.
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公开(公告)号：US20230238764A1
公开(公告)日：2023-07-27
申请号：US18099362
申请日：2023-01-20
Applicant: Thomas James Kane , Kenji Numata , John Lawrence Nightingale
Inventor： Thomas James Kane , Kenji Numata , John Lawrence Nightingale
CPC classification number: H01S3/083 , H01S3/0627 , H01S3/1003
Abstract: A monolithic nonplanar ring oscillator (NPRO) laser with a large piezo-electric tuning range and high frequency slew rate, denoted as a μNPRO, is described. A tuning range of 3.5 GHz with 192 volts applied, corresponding to a tuning coefficient of 18.2 MHz/volt was experimentally demonstrated. This performance was achieved by making the solid-state gain element small, with a small distance between a piezo-electric element bonded to the solid-state gain element and a first lase plane in the solid-state gain element. The entire nonplanar ring lasing path within the solid-state gain element may lie within the half of the solid-state gain element closest to the bonded piezo-electric element. This large frequency modulation span and wide frequency modulation bandwidth, combined with unsurpassed coherence and high power, make this an attractive laser for frequency-modulated continuous-wave (FMCW) LIDAR.
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公开(公告)号：US20230071683A1
公开(公告)日：2023-03-09
申请号：US17902764
申请日：2022-09-02
Applicant: Thomas James Kane , John Lawrence Nightingale
Inventor： Thomas James Kane , John Lawrence Nightingale
Abstract: A laser resonator assembly and a method of assembly of the laser resonator assembly are described. The laser resonator assembly has a gain element and an output coupler that are placed in a gain element frame and output coupler frame, respectively. The output coupler may also be a saturable absorber element so that the laser resonator assembly emits Q-switched pulses. The frames provide heat dissipation and can be easily aligned and permanently affixed in an appropriate alignment. A laser using the laser resonator assembly can be assembled in a low-cost manner.
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公开(公告)号：US20230051912A1
公开(公告)日：2023-02-16
申请号：US17903409
申请日：2022-09-06
Applicant: Thomas James Kane , John Lawrence Nightingale
Inventor： Thomas James Kane , John Lawrence Nightingale
Abstract: A passively, Q-switched laser is described. The laser may operate at an eye-safe lasing wavelength of 1.34 microns and use a gain element of Nd:YVO4 and a saturable absorber element of V:YAG with a space separating the gain element and saturable absorber element. The Q-switched laser is pumped by a grating stabilized laser diode. The laser may be used in laser ranging applications.
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公开(公告)号：US20140301417A1
公开(公告)日：2014-10-09
申请号：US13859412
申请日：2013-04-09
Applicant: Thomas James Kane
Inventor： Thomas James Kane
CPC classification number: H01S3/11 , H01S3/0085 , H01S3/0815 , H01S3/083 , H01S3/10092 , H01S3/1083 , H01S3/115 , H01S3/1611 , H01S3/1643 , H01S3/2316 , H01S3/2391
Abstract: Pulsed, coherent light is generated by optical mixing which takes place inside the resonator of a pulsed laser oscillator. One of the beams to be mixed is generated by the pulsed laser, and the other by a distinct, external laser oscillator. If the light from the external oscillator is modulated, that modulation will be transferred onto the light generated by the optical mixing. This enables modulated light at an expanded range of wavelengths. Using sum frequency generation, light for sodium excitation, such as for a guide star, can be generated with the optimal modulation of spectral and temporal properties. If the type of optical mixing is difference frequency generation, optical parametric amplifiers with improved efficiency and beam quality are enabled.
Abstract translation: 脉冲相干光通过在脉冲激光振荡器的谐振器内发生的光学混合产生。 要混合的光束之一是通过脉冲激光产生的，另一个由不同的外部激光振荡器产生。 如果来自外部振荡器的光被调制，则该调制将被转移到由光学混合产生的光上。 这使得能够在扩展的波长范围内的调制光。 使用和频产生，可以利用光谱和时间特性的最佳调制来产生用于钠激发的光，例如导星。 如果光混合的类型是差频产生，则能够提高效率和光束质量的光参量放大器。
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