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公开(公告)号：US20180323580A1
公开(公告)日：2018-11-08
申请号：US15967139
申请日：2018-04-30
发明人： Feng XIE , John PHAM , Michael P. STOCKER , Kevin LASCOLA
CPC分类号： H01S5/3402 , H01S5/028 , H01S5/0425 , H01S5/1209 , H01S5/124 , H01S5/22
摘要： An interband cascade laser including: a ridge waveguide having alternating first and second regions; wherein the first region has a constant width, and the second region has a width that matches that of the first region at boundaries between the first region and the second region, and the width of the second region increases to a maximum that is larger than the width of the first region, such that a partially-corrugated sidewall along each side of the ridge waveguide is formed; wherein the first region comprises a grating structure, and due to periodic nature of the first region, the grating structure is in a form of a sampled grating; and wherein the partially-corrugated sidewall increases waveguide losses for radiation in higher order lateral modes as compared to the fundamental waveguide mode.
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公开(公告)号：US09685766B2
公开(公告)日：2017-06-20
申请号：US14725789
申请日：2015-05-29
CPC分类号： H01S5/3402 , B82Y20/00 , H01S5/026 , H01S5/0268 , H01S5/0612 , H01S5/125 , H01S5/305 , H01S5/34313 , H01S5/3434 , H01S5/4068 , H01S5/4087
摘要： Disclosed is a method of forming a laser source capable of producing mid-IR laser radiation comprises growing a first core structure on a substrate, etching away the first core structure in one or more locations, and growing a second core structure on the substrate. At least one of the core structures comprises a quantum cascade gain medium emitting at a frequency within the range from 3-14 μm. Also disclosed is a laser source capable of producing mid-IR laser radiation comprising a quantum-cascade core positioned on a substrate for emitting within the range from 3-14 μm and a second core on the substrate positioned in-plane relative to the first core. The second core is one of a) a passive waveguide core b) a second quantum-cascade core and c) a semiconductor active core region.
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公开(公告)号：US20210281048A1
公开(公告)日：2021-09-09
申请号：US17195794
申请日：2021-03-09
发明人： Peter S.J. HEIM , John HRYNIEWICZ , Jacob MERTZ , Jianfei WANG
IPC分类号： H01S5/14 , H01S5/026 , H01S5/0683 , G01B9/02
摘要： A tunable laser assembly housed in a single enclosure and a method of control is described wherein the tunable laser, pump and semiconductor optical amplifier do not share a common optical axis but are all aligned to optical waveguides on an intervening planar lightwave circuit (PLC). Wavelength monitoring circuitry is included on the PLC to enable monitoring and control of the tunable laser center wavelength and optical bandwidth. The design of the PLC does not introduce perturbations into the swept-source laser output spectrum that would cause artifacts in imaging applications such as optical coherence tomography (OCT).
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公开(公告)号：US20210242662A1
公开(公告)日：2021-08-05
申请号：US17162104
申请日：2021-01-29
发明人： Peter S.J. HEIM , Alan DONALDSON , Jacob MERTZ , Robert ROCHE
IPC分类号： H01S5/0687 , H01S5/00 , H01S5/02326 , H01S5/024 , H01S5/04 , H01S5/02216
摘要： A tunable laser assembly housed in a single enclosure and a method of control is described that provides high-speed monitoring and control of the spectral properties of widely tunable lasers, such as MEMS-tunable VCSELs, with an optical configuration that does not introduce perturbations into the swept-source laser output spectrum that would cause artifacts in imaging applications such as optical coherence tomography (OCT).
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公开(公告)号：US09601901B2
公开(公告)日：2017-03-21
申请号：US14985776
申请日：2015-12-31
IPC分类号： H01S5/026 , H01S5/34 , H01S5/02 , H01S5/20 , H01S5/0625
CPC分类号： H01S5/026 , H01S5/0208 , H01S5/06256 , H01S5/2031 , H01S5/2206 , H01S5/3401 , H01S5/3402 , H01S2301/185
摘要： Disclosed is a semiconductor optical emitter having an optical mode and a gain section, the emitter comprising a low loss waveguide structure made of two alternating layers of semiconductor materials A and B, having refractive indexes of Na and Nb, respectively, with an effective index No of the optical mode in the low loss waveguide between Na and Nb, wherein No is within a 5% error margin of identical to a refractive index of the gain section and wherein the gain section is butt-jointed with the low loss waveguide, and wherein the size and shape of the optical mode(s) in the low loss waveguide and gain section are within a 10% error margin of equal. Desirably, at least one of the semiconductor materials A and B has a sufficiently large band gap that the passive waveguide structure blocks current under a voltage bias of 15 V.
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6.发明授权Waveguide structure for mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stages 有权用于中红外多波长串联分布反馈激光器的波导结构，具有由级联级制成的主动核心公开(公告)号：US09547124B2
公开(公告)日：2017-01-17
申请号：US13799592
申请日：2013-03-13
IPC分类号： G02B6/10 , H01S5/20 , G01N21/17 , H01S5/0625 , H01S5/10 , H01S5/12 , H01S5/34 , H01S5/40 , B82Y20/00 , H01S5/028
CPC分类号： H01S5/20 , B82Y20/00 , G01N21/17 , G02B6/102 , H01S5/028 , H01S5/06258 , H01S5/1032 , H01S5/1215 , H01S5/3401 , H01S5/3402 , H01S5/34313 , H01S5/4087 , H01S2301/166
摘要： Concatenated distributed feedback lasers having novel waveguides are disclosed. The waveguides allow for coupling of the laser beam between active and passive waveguide structures and improved device design and output efficiency. Methods of making along with methods of using such devices are also disclosed.
摘要翻译： 公开了具有新颖波导的并联分布式反馈激光器。 波导允许在有源和无源波导结构之间耦合激光束，并改善器件设计和输出效率。 还公开了使用这种装置的方法的方法。
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7.发明授权Mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stages 有权中红外多波长级联分布式反馈激光器与由级联级组成的有源核心公开(公告)号：US09455551B2
公开(公告)日：2016-09-27
申请号：US14371513
申请日：2013-01-11
IPC分类号： H01S5/34 , G01N21/39 , H01S5/0625 , H01S5/10 , B82Y20/00 , G01N21/47 , G01N21/59 , H01S5/12 , H01S5/028
CPC分类号： H01S5/3425 , B82Y20/00 , G01N21/39 , G01N21/47 , G01N21/59 , G01N2201/0612 , H01S5/0287 , H01S5/06256 , H01S5/1096 , H01S5/1215 , H01S5/3402
摘要： Concatenated distributed feedback lasers having multiple laser sections laid out in series are disclosed. The concatenated distributed feedback lasers utilize quantum cascade core designs to produce optical gain in the mid-infrared region and may generate several wavelengths simultaneously or sequentially. Methods of making along with methods of using such devices are also disclosed.
摘要翻译： 公开了具有串联布置的多个激光部分的并联分布反馈激光器。 级联分布式反馈激光器利用量子级联核心设计在中红外区域产生光学增益，并且可以同时或顺序地产生几个波长。 还公开了使用这种装置的方法的方法。
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公开(公告)号：US09385509B2
公开(公告)日：2016-07-05
申请号：US14725692
申请日：2015-05-29
IPC分类号： H01S3/10 , H01S5/34 , H01S5/028 , H01S5/06 , H01S5/0625 , H01S5/12 , B82Y20/00 , H01S3/1055 , H01S5/00 , H01S5/0687 , H01S5/10 , H01S5/40
CPC分类号： H01S5/0687 , B82Y20/00 , H01S3/1055 , H01S5/0014 , H01S5/028 , H01S5/0612 , H01S5/06256 , H01S5/06258 , H01S5/1096 , H01S5/1218 , H01S5/1228 , H01S5/125 , H01S5/3401 , H01S5/3402 , H01S5/4043 , H01S5/4087
摘要： A monolithic tunable mid-infrared laser has a wavelength range within the range of 3-14 μm and comprises a heterogeneous quantum cascade active region together with at least a first integrated grating. The heterogeneous quantum cascade active region comprises at least one stack, the stack comprising two, desirably at least three differing stages. Methods of operating and calibrating the laser are also disclosed.
摘要翻译： 单片可调谐中红外激光器的波长范围在3-14μm的范围内，并且包括非均质量子级联有源区以及至少第一集成光栅。 非均质量子级联有源区包括至少一个堆叠，堆叠包括两个，期望地至少三个不同的阶段。 还公开了操作和校准激光器的方法。
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9.发明申请MULTIWAVELENGTH QUANTUM CASCADE LASER VIA GROWTH OF DIFFERENT ACTIVE AND PASSIVE CORES 有权通过不同的有源和被动光纤的增长，多波长数量级激光器公开(公告)号：US20150263488A1
公开(公告)日：2015-09-17
申请号：US14725789
申请日：2015-05-29
CPC分类号： H01S5/3402 , B82Y20/00 , H01S5/026 , H01S5/0268 , H01S5/0612 , H01S5/125 , H01S5/305 , H01S5/34313 , H01S5/3434 , H01S5/4068 , H01S5/4087
摘要： Disclosed is a method of forming a laser source capable of producing mid-IR laser radiation comprises growing a first core structure on a substrate, etching away the first core structure in one or more locations, and growing a second core structure on the substrate. At least one of the core structures comprises a quantum cascade gain medium emitting at a frequency within the range from 3-14 μm. Also disclosed is a laser source capable of producing mid-IR laser radiation comprising a quantum-cascade core positioned on a substrate for emitting within the range from 3-14 μm and a second core on the substrate positioned in-plane relative to the first core. The second core is one of a) a passive waveguide core b) a second quantum-cascade core and c) a semiconductor active core region.
摘要翻译： 公开了一种形成能够产生中红外激光辐射的激光源的方法，包括在衬底上生长第一芯结构，在一个或多个位置蚀刻掉第一芯结构，并在衬底上生长第二芯结构。 核心结构中的至少一个包括以3-14μm范围内的频率发射的量子级联增益介质。 还公开了一种能够产生中红外激光辐射的激光源，其包括定位在衬底上的量子级联核心，用于在3-14μm的范围内发射，并且在基板上相对于第一核心定位在平面上的第二芯体 。 第二芯是a）无源波导芯b）第二量子级联核心和c）半导体活性核心区域。
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公开(公告)号：US09865990B2
公开(公告)日：2018-01-09
申请号：US15160634
申请日：2016-05-20
IPC分类号： H01S3/10 , H01S5/0687 , H01S5/028 , H01S5/06 , H01S5/0625 , H01S5/34 , H01S5/12 , B82Y20/00 , H01S3/1055 , H01S5/00 , H01S5/125 , H01S5/10 , H01S5/40
CPC分类号： H01S5/0687 , B82Y20/00 , H01S3/1055 , H01S5/0014 , H01S5/028 , H01S5/0612 , H01S5/06256 , H01S5/06258 , H01S5/1096 , H01S5/1218 , H01S5/1228 , H01S5/125 , H01S5/3401 , H01S5/3402 , H01S5/4043 , H01S5/4087
摘要： A method of characterizing a monolithic tunable mid-infrared laser including a heterogeneous quantum cascade active region together with a least first and a second tunable integrated distributed feedback gratings, the method including operating the laser while tuning the first grating through its full tuning range, while holding the reflectivity function of the second grating constant, then operating the laser while tuning the second grating through its full tuning range, while holding the reflectivity function of the first grating constant.
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