公开(公告)号：US12088060B2

公开(公告)日：2024-09-10

申请号：US17074050

申请日：2020-10-19

申请人： Intel Corporation

发明人： Karan Mehta ,  Richard Jones ,  Ranjeet Kumar ,  Guan-Lin Su ,  Duanni Huang ,  Haisheng Rong

IPC分类号： H01S5/068 ,  H01S5/065 ,  H01S5/125 ,  H01S5/30

CPC分类号： H01S5/068 ,  H01S5/0651 ,  H01S5/06821 ,  H01S5/125 ,  H01S5/3013

摘要： Embodiments of the present disclosure are directed to multi-wavelength laser generator may produce light with a frequency comb having equally spaced frequency lines. In various embodiments, the laser generator includes first, a semiconductor gain element is used to provide gain to the laser being generated. Second, a ring resonator filter, or ring filter, is used to select the wavelength comb spacing. Third, a narrow-band DBR or narrow-band mirror is used to select the number of wavelengths that lase. Fourth, a wide-band or narrow-band mirror is used to provide optical feedback and to form the optical cavity. Fifth, a phase tuner section is used to align the cavity modes with the ring resonances (i.e. the ring filter modes) in order to reduce or minimize the modal loss. Other embodiments may be described and/or claimed.

公开(公告)号：US10215551B2

公开(公告)日：2019-02-26

申请号：US13952574

申请日：2013-07-26

申请人： Thorlabs, Inc. ,  Praevium Research, Inc.

发明人： Benjamin Michael Potsaid ,  James Yi Jiang ,  Vijaysekhar Jayaraman ,  Scott Barry ,  Anjul M. Davis Loiacono ,  Alex Ezra Cable

IPC分类号： G01B11/02 ,  G01B9/02 ,  H01S5/183 ,  A61B5/00 ,  A61B3/10

CPC分类号： G01B9/02091 ,  A61B3/102 ,  A61B5/0066 ,  G01B9/02004 ,  G01B9/02044 ,  G01B9/02067 ,  G01B9/02069 ,  H01S5/0651 ,  H01S5/18361 ,  H01S5/18366

摘要： An agile optical imaging system for optical coherence tomography imaging using a tunable source comprising a wavelength tunable VCL laser is disclosed. The tunable source has long coherence length and is capable of high sweep repetition rate, as well as changing the sweep trajectory, sweep speed, sweep repetition rate, sweep linearity, and emission wavelength range on the fly to support multiple modes of OCT imaging. The imaging system also offers new enhanced dynamic range imaging capability for accommodating bright reflections. Multiscale imaging capability allows measurement over orders of magnitude dimensional scales. The imaging system and methods for generating the waveforms to drive the tunable laser in flexible and agile modes of operation are also described.

公开(公告)号：US20180233171A1

公开(公告)日：2018-08-16

申请号：US15947319

申请日：2018-04-06

申请人： Seagate Technology LLC

发明人： Karim Tatah ,  Mourad Benakli ,  James Gary Wessel

IPC分类号： G11B7/1263

CPC分类号： G11B7/1263 ,  G11B5/02 ,  G11B5/09 ,  G11B5/40 ,  G11B5/455 ,  G11B2005/0021 ,  H01S5/02453 ,  H01S5/0261 ,  H01S5/0612 ,  H01S5/0617 ,  H01S5/06216 ,  H01S5/0651 ,  H01S5/06804 ,  H01S5/06808

摘要： A method and apparatus provide for determining a temperature at a junction of a laser diode when the laser diode is operated in a lasing state that facilitates heat-assisted magnetic recording, comparing the junction temperature and an injection current supplied during the lasing state to stored combinations of junction temperature and injection current, and determining a likelihood of mode hopping occurring for the laser diode during the lasing state based on the comparison to stored combinations of junction temperature and injection current.

公开(公告)号：US09916132B2

公开(公告)日：2018-03-13

申请号：US14468490

申请日：2014-08-26

申请人： Kabushiki Kaisha Toshiba

发明人： Zhiliang Yuan ,  Marco Lucamarini ,  Andrew James Shields

IPC分类号： G06F1/02 ,  G06F7/58 ,  H01S5/065 ,  H04L9/08 ,  H01S5/062

CPC分类号： G06F7/588 ,  H01S5/06213 ,  H01S5/065 ,  H01S5/0651 ,  H04L9/0852

摘要： A random number generation system, comprising: a light source configured to generate light pulses and a driving unit configured to drive said light source such that the phase of each light pulse has a random relationship to the phase of each subsequently generated light pulse, and such that each light pulse is generated with at least two local maxima in the temporal intensity profile.

公开(公告)号：US20170187164A1

公开(公告)日：2017-06-29

申请号：US15456786

申请日：2017-03-13

申请人： Microsoft Technology Licensing, LLC

发明人： Barry Thompson ,  Stefan Wurster ,  Lawrence A. Prather ,  Dane Snow ,  Richard McCauley

IPC分类号： H01S5/042 ,  H04N13/02 ,  A63F13/213 ,  H01S5/068

CPC分类号： H04N13/254 ,  A63F13/213 ,  G06K9/00342 ,  H01S5/042 ,  H01S5/0427 ,  H01S5/0651 ,  H01S5/06808 ,  H01S5/06825

摘要： A voltage mode laser diode driver selectively turns on and off a laser diode. An output stage has an output node configured to be connected to one of the terminals of the laser diode. Depending upon implementation, an active swing controller drives the output stage in a manner that substantially prevents inductive kickback from causing the output node voltage to swinging above the voltage level at the voltage output of the power supply, or swing below ground. The output stage provides a discharge path around the laser diode to shunt current associated with the inductive kickback, and substantially eliminates ringing on the output node of the output stage while the laser diode is off. A power supply controller adjusts the voltage level of the voltage output of the power supply so that current through the laser diode when on and emitting light is substantially equal to a predetermined desired current.

公开(公告)号：US20160087395A1

公开(公告)日：2016-03-24

申请号：US14859706

申请日：2015-09-21

申请人： Sandia Corporation

发明人： Michael C. Wanke

IPC分类号： H01S3/109 ,  H01S5/026 ,  H01S5/34

CPC分类号： H01S3/08027 ,  H01S3/08036 ,  H01S3/109 ,  H01S5/026 ,  H01S5/0262 ,  H01S5/0604 ,  H01S5/0605 ,  H01S5/0623 ,  H01S5/0651 ,  H01S5/0657 ,  H01S5/068 ,  H01S5/1046 ,  H01S5/1096 ,  H01S5/3401 ,  H01S2302/02

摘要： Rather than down-convert optical frequencies, a QCL laser system directly generates a THz frequency comb in a compact monolithically integrated chip that can be locked to an absolute frequency without the need of a frequency-comb synthesizer. The monolithic, absolute frequency comb can provide a THz frequency reference and tool for high-resolution broad band spectroscopy.

摘要翻译： QCL激光系统不是降频转换光频，而是在紧凑的单片集成芯片中直接产生一个THz频率梳，可以锁定到绝对频率，而不需要频梳合成器。 单片绝对频率梳可提供用于高分辨率宽带光谱的THz频率参考和工具。

公开(公告)号：US20240332893A1

公开(公告)日：2024-10-03

申请号：US18447989

申请日：2023-08-10

申请人： Western Digital Technologies, Inc.

发明人： Erhard Schreck ,  Sukumar Rajauria ,  Robert Smith

IPC分类号： H01S5/065 ,  G11B5/03 ,  H01S5/024

CPC分类号： H01S5/0651 ,  G11B5/03 ,  H01S5/02453 ,  G11B2005/0021

摘要： A data storage device may include one or more disks, an actuator arm assembly comprising one or more magnetic recording heads, a laser diode positioned inside a laser diode cavity, and one or more processing devices configured to initiate a write operation, wherein initiating the write operation comprises activating a magnetic recording head corresponding to the laser diode, and applying a forward bias to the laser diode; apply a first reverse bias to the laser diode during at least one intervening event; and transition from applying the first reverse bias to the at least one laser diode to applying the forward bias to the at least one laser diode.

公开(公告)号：US20230231358A1

公开(公告)日：2023-07-20

申请号：US18162004

申请日：2023-01-31

申请人： Arista Networks, Inc.

发明人： Alexey Kovsh ,  David Towne ,  Peter Parkinson ,  Andreas Bechtolsheim

IPC分类号： H01S5/02251 ,  H01S5/50 ,  G02B6/42 ,  H01S5/065 ,  H04B10/70 ,  H04B10/50 ,  H01S5/34 ,  H01S5/14 ,  H04B10/524 ,  H04B10/54 ,  H04B10/564

CPC分类号： H01S5/02251 ,  H01S5/50 ,  G02B6/4296 ,  G02B6/4204 ,  H01S5/0651 ,  G02B6/4292 ,  H04B10/70 ,  H04B10/503 ,  H01S5/3412 ,  H01S5/146 ,  H04B10/505 ,  H04B10/506 ,  H04B10/524 ,  H04B10/541 ,  H04B10/564

摘要： Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.

公开(公告)号：US20190067904A1

公开(公告)日：2019-02-28

申请号：US16110157

申请日：2018-08-23

申请人： Commissariat a I'energie atomique et aux energies alternatives

发明人： Vincent REBOUD ,  Salim BOUTAMI

IPC分类号： H01S5/065 ,  H01S5/026 ,  H01S5/125

CPC分类号： H01S5/0651 ,  G02B6/107 ,  G02B6/122 ,  G02B6/1228 ,  G02B2006/12104 ,  G02B2006/12121 ,  H01S5/026 ,  H01S5/125

摘要： The invention relates to a semiconductor structure, including: a semiconductor layer, including a membrane suspended above a carrier layer, the suspended membrane being formed of a central section, which is tensilely stressed and of a plurality of tensioning arms; and least one optical cavity, bounded by two optical reflectors, which are placed in the lateral sections on either side of the central section; wherein: the central section is designed to transmit in the direction of the optical reflectors at least one uneven-order mode; and each of said optical reflectors is formed of two lateral half-reflectors, which are arranged on either side of a longitudinal axis of the lateral section, so as to at least partially reflect said uneven-order mode.

公开(公告)号：US10014664B2

公开(公告)日：2018-07-03

申请号：US15377813

申请日：2016-12-13

申请人： nLIGHT, Inc.

发明人： Manoj Kanskar

IPC分类号： H01S5/20 ,  H01S5/028 ,  H01S5/10 ,  H01S5/065

CPC分类号： H01S5/2036 ,  H01S5/0287 ,  H01S5/0651 ,  H01S5/1003 ,  H01S5/1014 ,  H01S5/1203 ,  H01S5/2018 ,  H01S5/22 ,  H01S2301/16 ,  H01S2301/18

摘要： A broad area semiconductor diode laser device includes a multimode high reflector facet, a partial reflector facet spaced from said multimode high reflector facet, and a flared current injection region extending and widening between the multimode high reflector facet and the partial reflector facet, wherein the ratio of a partial reflector facet width to a high reflector facet width is n:1, where n>1. The broad area semiconductor laser device is a flared laser oscillator waveguide delivering improved beam brightness and beam parameter product over conventional straight waveguide configurations.