公开(公告)号：US20190089122A1

公开(公告)日：2019-03-21

申请号：US16084978

申请日：2016-07-08

Applicant: DAHENG NEW EPOCH TECHNOLOGY INC.

Inventor： Yi ZHANG ,  Meng LIU ,  Haitao FAN ,  Siyi YAO

IPC: H01S3/11 ,  H01S3/094 ,  H01S3/16 ,  H01S3/105

CPC classification number: H01S3/1109 ,  H01S3/094 ,  H01S3/10092 ,  H01S3/105 ,  H01S3/1112 ,  H01S3/1625 ,  H01S3/1636

Abstract: A femtosecond laser oscillator includes a 532 nm pump laser light, a Ti-doped sapphire, a laser resonator, and a dispersion compensation element, etc. The 532 nm pump laser light is radiated via a pump laser light guide device to the Ti-doped sapphire and generates stimulated radiation, the stimulated radiation light oscillates back and forth in the laser resonator and thereby is amplified, and continuous light is outputted. The dispersion compensation element is disposed in the resonator to compensate the dispersion of the outputted laser light resulted from oscillation of the laser light in the resonator to attain a mode locking condition. The mode locking means of the laser against disturbance is implemented in a form of return light outside the resonator, specifically, the emitted continuous light is returned to a femtosecond laser partially and thereby mode locking is achieved, and output of femtosecond pulses is realized.

公开(公告)号：US20190013639A1

公开(公告)日：2019-01-10

申请号：US15643456

申请日：2017-07-06

Applicant: Industrial Technology Research Institute

Inventor： Jin-Long Peng

IPC: H01S3/11 ,  H01S3/067 ,  H01S3/08

CPC classification number: H01S3/1118 ,  H01S3/06712 ,  H01S3/06791 ,  H01S3/08054 ,  H01S3/1112 ,  H01S5/5009

Abstract: A laser device with a ring laser resonator includes a polarization maintaining (PM) fiber, a first quarter waveplate, and an optical isolator. The PM fiber has a light input end and a light output end and is configured to guide a first linearly polarized light with a first phase along a fast axis of the PM fiber from the light input end and a second linearly polarized light with a second phase along a slow axis of the PM fiber from the input end. The first quarter waveplate is disposed at the light output end of the PM fiber and configured to convert the first and the second linearly polarized lights into left-handed and right-handed (or right-handed and left-handed) circularly polarized lights, respectively. The optical isolator is configured to unidirectionally transmit a laser pulse in the ring laser resonator.

公开(公告)号：US20180216996A1

公开(公告)日：2018-08-02

申请号：US15578397

申请日：2016-06-01

Applicant: Arizona Board of Regents on Behalf of the University of Arizona

Inventor： Khanh Q. Kieu

IPC: G01J3/10 ,  G01J3/427 ,  G01C19/72 ,  G01J3/45 ,  H01S3/11 ,  H01S3/10 ,  H01S3/067 ,  H01S3/16

CPC classification number: G01J3/10 ,  G01C19/72 ,  G01C19/721 ,  G01J3/42 ,  G01J3/427 ,  G01J3/45 ,  H01S3/06791 ,  H01S3/10038 ,  H01S3/10061 ,  H01S3/1109 ,  H01S3/1112 ,  H01S3/1608

Abstract: A method of interrogating an absorbing sample includes using a mode-locked laser mode-locked in both a clock-wise (CW) and a counter-clock wise (CCW) direction to generate first and second optical pulses having different repetition rates. One of the first and second optical pulses is directed in a CW direction and the other of the first and second optical pulses is directed in the CCW direction. The first optical pulses are transmitted through the absorbing sample to probe the absorbing sample while the second optical pulses are transmitted through the absorbing sample to act as a local oscillator. An interference pattern produced by interference between the first and second optical pulses is detected after traversing the absorbing sample.

公开(公告)号：US20180073856A1

公开(公告)日：2018-03-15

申请号：US15705511

申请日：2017-09-15

Applicant: The Regents of the University of Michigan

Inventor： Steven T. CUNDIFF ,  Bachana LOMSADZE

IPC: G01B9/02 ,  G01J3/45 ,  G01N21/31 ,  H01S3/13 ,  H04B10/50 ,  G01N21/25

CPC classification number: G01B9/02008 ,  G01J3/0262 ,  G01J3/0286 ,  G01J3/12 ,  G01J3/45 ,  G01J3/457 ,  G01J2003/1286 ,  G01N21/255 ,  G01N21/31 ,  G01N21/636 ,  G02F1/3536 ,  H01S3/0085 ,  H01S3/1112 ,  H01S3/13 ,  H01S3/1304 ,  H04B10/506

Abstract: Dual laser frequency combs can rapidly measure high resolution linear absorption spectra. However, one-dimensional linear techniques cannot distinguish the sources of resonances in a mixture of different analytes, nor separate inhomogeneous and homogeneous broadening. These limitations are overcome by acquiring high resolution multi-dimensional non-linear coherent spectra with frequency combs.

公开(公告)号：US20170310068A1

公开(公告)日：2017-10-26

申请号：US15645094

申请日：2017-07-10

Applicant: SOUTHERN PHOTONICS LIMITED

Inventor： Claude AGUERGARAY ,  Miro Juhani ERKINTALO ,  Antione Francois Jacques RUNGE ,  Neil Gregory Raphael BRODERICK

IPC: H01S3/067 ,  H01S3/11 ,  H01S3/16

CPC classification number: H01S3/06791 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/06783 ,  H01S3/1112 ,  H01S3/1618

Abstract: A laser apparatus operable to generate giant chirp pulses. The pulses have a centre frequency comprising an arrangement of components connected or connectable to form a closed ring cavity. The components comprise a first gain medium, an optical isolator, a length of single mode fibre, a mode locking device, an output coupler, and an optical filter. Each of the components are optical fibre based components.

公开(公告)号：US20170261833A1

公开(公告)日：2017-09-14

申请号：US15451852

申请日：2017-03-07

Applicant: Max-Planck-Gesellschaft ZUR Foerderung der Wissenschaften e.V. ,  Ludwig-Maximillians-Universitaet Muenchen

Inventor： Elena FEDULOVA ,  Oleg PRONIN ,  Michael TRUBETSKOV ,  Kilian FRITSCH ,  Vladimir PERVAK

IPC: G02F1/35 ,  G02F1/355 ,  G02F1/21

CPC classification number: G02F1/3511 ,  G02F1/21 ,  G02F1/3523 ,  G02F1/355 ,  G02F1/3556 ,  G02F2203/15 ,  H01S3/08059 ,  H01S3/1112

Abstract: Optical component (10) for modulating light field (1) incident thereon, particularly amplitude and/or phase in dependency on intensity (I) thereof, includes stack (11) of refractive layers (12, 13) on substrate (14), made of materials having third-order nonlinearity, and having alternatingly varying refractive indices (n), including linear contribution (n0) and non-linear contribution (n2), and determining reflectance and transmittance spectra of the optical component, wherein refractive layers (12, 13) are configured such that reflectance and transmittance of the optical component have a Kerr effect based dependency on intensity (I) of the incident light field with n=n0+I·n2, and refractive layers (12, 13) are made of at least one of dielectric and semiconductor layers, wherein non-linear contribution (n2) is below 10−12 cm2/W. A resonator device including the optical component, a method of modulating a light field using the optical component and a method of manufacturing the optical component are described.

公开(公告)号：US20170261832A1

公开(公告)日：2017-09-14

申请号：US15457928

申请日：2017-03-13

Applicant: AOSense, Inc.

Inventor： Arman Cingoz ,  Dmitriy Churin ,  Jonathan Roslund ,  Miao Zhu

IPC: G02F1/35 ,  G02F1/355 ,  H01S3/11 ,  H01S3/067

CPC classification number: G02F1/353 ,  G02F1/3501 ,  G02F1/3544 ,  G02F1/3551 ,  G02F2203/56 ,  H01S3/0085 ,  H01S3/067 ,  H01S3/0675 ,  H01S3/06791 ,  H01S3/0941 ,  H01S3/10092 ,  H01S3/106 ,  H01S3/107 ,  H01S3/1106 ,  H01S3/1112 ,  H01S3/1118 ,  H01S3/1304 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/1608 ,  H01S3/1618

Abstract: A system for optical comb carrier envelope offset frequency control includes a mode-locked laser and a frequency shifter. The mode-locked laser produces a laser output. The frequency shifter shifts the laser output to produce a frequency shifted laser output based at least in part on one or more control signals. The frequency shifted laser output has a controlled carrier envelope offset frequency. The frequency shifter includes a first polarization converter, a rotating half-wave plate, and a second polarization converter.

公开(公告)号：US20170237223A1

公开(公告)日：2017-08-17

申请号：US15515228

申请日：2015-09-29

Applicant: IPG PHOTONICS CORPORATION

Inventor： Igor SAMARTSEV ,  Andrey BORDENYUK

IPC: H01S3/11 ,  H01S3/094 ,  H01S3/067

CPC classification number: H01S3/1112 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/06745 ,  H01S3/06791 ,  H01S3/08045 ,  H01S3/094019 ,  H01S3/094069 ,  H01S3/1109 ,  H01S3/1618

Abstract: A single mode fiber pulsed oscillator includes an all normal dispersion ring cavity provided with a mode-locking fiber loop component and a giant chirp generating fiber component. The mode-locking fiber loop component is configured with a hybrid of NOLM and NALM configurations which is operative to induce a first phase acquisition of a spectrally narrow pulse due to SPM. The giant chirp generating fiber loop component is configured to induce the additional phase acquisition to the pulse broadened in the mode-locking fiber component so as to generate a pulse with a giant chirp. The fiber loop components each include a fiber amplifier and a coil of fiber. The amplifiers each are configured with an active fiber provided with a core which supports multiple transverse mode in a range of wavelength except for the desired wavelength at which the core is configured to support a single fundamental mode.

公开(公告)号：US09627843B2

公开(公告)日：2017-04-18

申请号：US15146546

申请日：2016-05-04

Applicant: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V. ,  Ludwig-Maximilians-Universitaet Muenchen

Inventor： Jinwei Zhang ,  Oleg Pronin ,  Jonathan Brons

IPC: H01S3/10 ,  H01S3/109 ,  H01S3/11 ,  H01S3/06 ,  H01S3/106 ,  H01S3/08 ,  H01S3/081 ,  H01S3/16

CPC classification number: H01S3/1095 ,  H01S3/0604 ,  H01S3/0805 ,  H01S3/081 ,  H01S3/0811 ,  H01S3/0813 ,  H01S3/1068 ,  H01S3/1112 ,  H01S3/1618 ,  H01S3/1643

Abstract: A method of generating fs laser pulses (1), includes steps of creating a circulating light field in a resonator cavity (10) with multiple resonator mirrors (11-18) by pumping at least one gain medium (21, 22) included in the resonator cavity (10), and passing the circulating light field through a first Kerr medium (31) included in the resonator cavity (10), so that the fs laser pulses (1) are formed by self-amplitude modulation of the circulating light field, wherein the resonator cavity (10) includes at least one supplementary Kerr medium (32-36) enhancing the self-amplitude modulation of the circulating light field, and each of the first Kerr medium (31) and the at least one supplementary Kerr medium (32-36) provide different non-linear Kerr lens contributions to the self-amplitude modulation of the circulating light field. Laser pulse source apparatus (100) for generating fs laser pulses (1) is also described.

公开(公告)号：US20170025811A1

公开(公告)日：2017-01-26

申请号：US15156320

申请日：2016-05-16

Applicant: KM Labs Inc.

Inventor： Matthew S. Kirchner ,  Sterling Backus ,  David Winters

IPC: H01S3/067 ,  H01S3/094

CPC classification number: H01S3/06725 ,  H01S3/0057 ,  H01S3/0064 ,  H01S3/06741 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/1112 ,  H01S2301/085

Abstract: A system for single pass amplification of dissipative soliton-like seed pulses of 1-20 ps to produce output pulses of 50-200 fs, without requiring a stretcher. Such an amplifier relies on the inherent chirp of the seed pulse out of the oscillator instead of pulse stretching.

Abstract translation: 用于单次通过放大1-20 ps散射孤子样种子脉冲的系统，以产生50-200 fs的输出脉冲，无需担架。 这种放大器依赖于来自振荡器的种子脉冲的固有啁啾而不是脉冲拉伸。