公开(公告)号：US20020163942A1

公开(公告)日：2002-11-07

申请号：US10029008

申请日：2001-12-20

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： James N. Baillargeon ,  Wen-Yen Hwang ,  Klaus Alexander Anselm ,  Chih-Hsiang Lin

IPC: H01S003/10 ,  H01S003/13

CPC classification number: H01S3/1303 ,  H01S3/131 ,  H01S3/1392 ,  H01S5/0687

Abstract: A monitored laser system includes a laser with a first mirror and an exit mirror. The laser also has a laser cavity defined at least in part by the first mirror and the exit mirror. Within the laser cavity is an active region that contains material that is capable of stimulated emission at one or more wavelengths such that laser light is emitted from the laser. A power source is coupled to the active region. A multiple reflectivity band reflector (MRBR) is coupled to at least a portion of the emitted laser light. The MRBR has at least first and second wavelength bands with reflectivity above a particular reflectivity separated by at least a third wavelength band having reflectivity below the particular reflectivity. A first photodiode is coupled to at least a portion of the filtered laser light and produces an output based on the amount and wavelength of light received. A means for adjusting the emitted wavelength of the laser toward a particular wavelength in one of the at least first, second, and third wavelength bands based at least in part on the output of the first photodiode.

Abstract translation: 被监视的激光系统包括具有第一反射镜和出射镜的激光器。 激光器还具有至少部分地由第一反射镜和出射镜限定的激光腔。 在激光腔内是包含能够在一个或多个波长处被激发的材料的激活区域，使得激光从激光器发射。 电源耦合到有源区。 多反射带反射器（MRBR）耦合到所发射的激光的至少一部分。 MRBR具有至少第一和第二波长带，其具有高于具有低于特定反射率的反射率的至少第三波长带隔开的特定反射率的反射率。 第一光电二极管被耦合到滤波的激光的至少一部分，并且基于所接收的光的量和波长产生输出。 用于至少部分地基于第一光电二极管的输出，将至少第一，第二和第三波长带中的一个波长的激光发射波长调整到特定波长的装置。

公开(公告)号：US20030076866A1

公开(公告)日：2003-04-24

申请号：US10198683

申请日：2002-07-18

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： James N. Baillargeon ,  Wen-Yen Hwang ,  Klaus Alexander Anselm ,  Chih-Hsiang Lin

IPC: H01S003/08

CPC classification number: H01S3/1303 ,  H01S3/131 ,  H01S3/1392 ,  H01S5/0687

Abstract: A multiple reflectivity band reflector (MRBR) includes a stack of dielectric layers, arranged so that the reflector has a reflectivity profile comprising a plurality of reflectivity bands, e.g. at least first and second wavelength bands with reflectivity above a lasing threshold reflectivity, separated by a third wavelength band between the first and second wavelength bands having reflectivity below the lasing threshold reflectivity. A laser having at least a first mirror and an MRBR as the second mirror has a laser cavity, at least a portion of which is defined by the first mirror and the MRBR. An active region located within the laser cavity contains a material that is capable of stimulated emission at one or more wavelengths in the first and second wavelength bands. The gain spectrum of the laser is adjusted to select one of the first and second wavelength bands, thereby providing for lasing at a wavelength within the selected wavelength band. The laser may be, e.g., a monolithic VCSEL or a one-section or two-section external-cavity VECSEL having the MRBR as one of its cavity mirrors.

Abstract translation: 多反射带反射器（MRBR）包括一叠电介质层，其布置成使得反射器具有包括多个反射带的反射率分布， 具有高于激光阈值反射率的反射率的至少第一和第二波长带，其具有低于激光阈值反射率的反射率的第一和第二波长带之间的第三波长带分隔开。 具有至少第一反射镜和MRBR作为第二反射镜的激光器具有激光腔，其至少一部分由第一反射镜和MRBR限定。 位于激光腔内的有源区域包含能够在第一和第二波长带中的一个或多个波长处受激发射的材料。 调整激光器的增益光谱以选择第一和第二波长带中的一个，从而提供在所选波长带内的波长处的激光。 激光器可以是例如单片VCSEL或具有MRBR作为其腔镜之一的单段或两段外腔VECSEL。

公开(公告)号：US20030185267A1

公开(公告)日：2003-10-02

申请号：US10109288

申请日：2002-03-28

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： Wen-Yen Hwang ,  Klaus Alexander Anselm ,  Jun Zheng

IPC: H01S003/08

CPC classification number: H01S5/18358 ,  H01S5/1833 ,  H01S5/18338 ,  H01S5/18369 ,  H01S5/205 ,  H01S2301/166

Abstract: A surface-emitting laser, such as a VCSEL, for generating single-transverse mode laser light at a lasing wavelength, has a first mirror and a second mirror positioned so as to define a laser cavity therebetween, and a semiconductor active region disposed between the first and second mirrors for amplifying, by stimulated emission, light in the laser cavity at the lasing wavelength. An annular antiguide structure is disposed within the laser cavity and between the active region and one of the first and second mirrors, the annular antiguide structure comprising an antiguide material and having a central opening, the central opening comprising a second material having an index of refraction for light at the lasing wavelength smaller than that of the antiguide material, whereby the annular antiguide structure causes preferential antiguiding of higher order transverse lasing modes in the laser cavity.

Abstract translation: 用于产生激光波长的单横模式激光的诸如VCSEL的表面发射激光器具有定位成在其间限定激光腔的第一反射镜和第二反射镜，以及位于 第一和第二镜，用于通过受激发射在激光波长处放大激光腔中的光。 环形防水结构设置在激光腔内并且在有源区域与第一和第二反射镜之一之间，环形防水结构包括防护材料并具有中心开口，中心开口包括具有折射率的第二材料 对于激光波长小于抗蚀剂材料的波长的光，由此环形抗蚀剂结构在激光腔中引起较高阶横向激光模式的优先防御。

公开(公告)号：US20030053511A1

公开(公告)日：2003-03-20

申请号：US10198373

申请日：2002-07-18

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： James N. Baillargeon ,  Wen-Yen Hwang ,  Klaus Alexander Anselm ,  Chih-Hsiang Lin

IPC: H01S003/10 ,  H01S003/04 ,  H01S003/08 ,  H01S003/082

CPC classification number: H01S3/1303 ,  H01S3/131 ,  H01S3/1392 ,  H01S5/0687

Abstract: A multiple reflectivity band reflector (MRBR) includes a stack of dielectric layers, arranged so that the reflector has a reflectivity profile comprising a plurality of reflectivity bands, e.g. at least first and second wavelength bands with reflectivity above a lasing threshold reflectivity, separated by a third wavelength band between the first and second wavelength bands having reflectivity below the lasing threshold reflectivity. A laser having at least a first mirror and an MRBR as the second mirror has a laser cavity, at least a portion of which is defined by the first mirror and the MRBR. An active region located within the laser cavity contains a material that is capable of stimulated emission at one or more wavelengths in the first and second wavelength bands. The gain spectrum of the laser is adjusted to select one of the first and second wavelength bands, thereby providing for lasing at a wavelength within the selected wavelength band. The laser may be, e.g., a monolithic VCSEL or a one-section or two-section external-cavity VECSEL having the MRBR as one of its cavity mirrors.

Abstract translation: 多反射带反射器（MRBR）包括一叠电介质层，其布置成使得反射器具有包括多个反射带的反射率分布， 具有高于激光阈值反射率的反射率的至少第一和第二波长带，其具有低于激光阈值反射率的反射率的第一和第二波长带之间的第三波长带分隔开。 具有至少第一反射镜和MRBR作为第二反射镜的激光器具有激光腔，其至少一部分由第一反射镜和MRBR限定。 位于激光腔内的有源区域包含能够在第一和第二波长带中的一个或多个波长处受激发射的材料。 调整激光器的增益光谱以选择第一和第二波长带中的一个，从而提供在所选波长带内的波长处的激光。 激光器可以是例如单片VCSEL或具有MRBR作为其腔镜之一的单段或两段外腔VECSEL。

公开(公告)号：US20030043866A1

公开(公告)日：2003-03-06

申请号：US10198528

申请日：2002-07-18

Applicant: APPLIED OPTOELECTRONICS, INC.

Inventor： James N. Baillargeon ,  Wen-Yen Hwang ,  Klaus Alexander Anselm ,  Chih-Hsiang Lin

IPC: H01S003/13 ,  H01S003/08 ,  G02B005/28

CPC classification number: H01S3/1303 ,  H01S3/131 ,  H01S3/1392 ,  H01S5/0687

Abstract: A monitored laser system has a laser having a first mirror; an exit mirror, at least a portion of a laser cavity defined by the first mirror and the exit mirror; and an active region located in the laser cavity, the active region containing a material that is capable of stimulated emission at one or more wavelengths of laser light within a tuning range of the laser. A multiple reflectivity band reflector (MRBR) is coupled to at least a portion of laser light emitted from the laser and transmits filtered laser light. The MRBR has a plurality of layers of material arranged in parallel such that the reflector has a plurality of reflectivity peaks within the tuning range, each reflectivity peak separated from neighboring reflectivity peak by a reflectivity trough having a trough minimum, said reflectivity peaks characterized by a peak profile and said trough minima between said reflectivity peaks characterized by a trough profile. At least one of the peak and trough profiles has a substantially non-constant relationship of wavelength to reflectivity. A first photodiode coupled to at least a portion of the filtered laser light produces an output based on the amount of light received. The emitted wavelength of the laser is adjusted toward a desired wavelength within the tuning range based at least in part on the output of the first photodiode.

Abstract translation: 所监视的激光系统具有具有第一反射镜的激光器; 出射镜，由第一反射镜和出射镜限定的激光腔的至少一部分; 以及位于所述激光腔中的有源区域，所述有源区域包含能够在所述激光器的调谐范围内的激光的一个或多个波长处受激发射的材料。 多反射带式反射器（MRBR）耦合到从激光器发射的激光的至少一部分并透射滤波的激光。 MRBR具有平行布置的多层材料，使得反射器在调谐范围内具有多个反射率峰值，每个反射率峰值与相邻反射率峰值分离具有波谷最小值的反射率波谷，所述反射率峰值以 在所述反射率峰值之间的峰值曲线和所述的谷值最小值，其特征在于波谷曲线。 峰值和谷值曲线中的至少一个具有波长与反射率之间基本上不恒定的关系。 耦合到滤波的激光的至少一部分的第一光电二极管基于所接收的光量产生输出。 至少部分地基于第一光电二极管的输出，在调谐范围内将激光的发射波长调节到期望的波长。