公开(公告)号：US07327471B2

公开(公告)日：2008-02-05

申请号：US11066683

申请日：2005-02-25

Applicant: Bruce Tiemann

Inventor： Bruce Tiemann

IPC: G01B9/02

CPC classification number: H01S3/13 ,  H01S3/1303 ,  H01S3/1305

Abstract: Method and apparatus are disclosed that enable lasers to be stabilized in frequency to a high precision while simultaneously enabling rapid re-acquisition of stabilization control loops in the event of frequency locking loss. The principle of operation is to incorporate two etalons, one having a high finesse for frequency high stability, and one having a low finesse for wide error signal locking range, and electronics that pass control between two control systems in such a manner that any loss of frequency locking is rapidly re-acquired.

Abstract translation: 公开了使激光器能够以高精度稳定的方法和装置，同时在频率锁定损失的情况下能够快速重新采集稳定控制回路。 操作原理是包含两个标准具，一个具有高频率高稳定性的技术，另一个具有低误差信号锁定范围的精细度，以及两个控制系统之间的控制，使得任何损失 频率锁定被快速重新获得。

公开(公告)号：US07180657B1

公开(公告)日：2007-02-20

申请号：US11378406

申请日：2006-03-17

Applicant: Yaakov Shevy

Inventor： Yaakov Shevy

IPC: H01S3/00 ,  H01S3/13 ,  G02B6/02

CPC classification number: H01S3/1303 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/42 ,  G01J2003/2866 ,  G01N21/03 ,  G01N21/278 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/0346 ,  G01N2021/399 ,  G02B6/02347 ,  H01S3/1305

Abstract: Techniques and devices based on holey fibers with internal holes that confine a gas medium for various applications.

Abstract translation: 基于具有内孔的多孔纤维的技术和装置，其限制用于各种应用的气体介质。

公开(公告)号：US20060262816A1

公开(公告)日：2006-11-23

申请号：US11492017

申请日：2006-07-25

Applicant: Alan Kathman ,  John Hammond ,  Robert Te Kolste ,  Alvaro Cabrera

Inventor： Alan Kathman ,  John Hammond ,  Robert Te Kolste ,  Alvaro Cabrera

IPC: H01S3/13

CPC classification number: G01J3/02 ,  G01J3/0256 ,  G01J3/26 ,  G01J9/0246 ,  G01J2003/1213 ,  H01S3/1303 ,  H01S5/005 ,  H01S5/0687

Abstract: A wavelength locker for use at more than one wavelength includes filters with different characteristics for a corresponding detector. The filters may be etalons having different free spectral ranges, e.g., having different apparent or real thicknesses. If more than three such filters are used outputting offset periodic signals, a reference detector may be eliminated and continuous operation over a wavelength range may be realized.

Abstract translation: 用于多于一个波长的波长锁定器包括用于相应检测器的具有不同特性的滤波器。 滤光器可以是具有不同自由光谱范围的标准具，例如具有不同的表观或实际厚度。 如果使用三个以上的这样的滤波器来输出偏移周期信号，则可以消除参考检测器并且可以实现在波长范围上的连续操作。

公开(公告)号：US20060083274A1

公开(公告)日：2006-04-20

申请号：US11223195

申请日：2005-09-08

Applicant: Young-Ho Park ,  Si-Yeong Gwag ,  Yoo-Keun Won

Inventor： Young-Ho Park ,  Si-Yeong Gwag ,  Yoo-Keun Won

IPC: H01S3/13

CPC classification number: H01S3/1303 ,  H01S3/1305 ,  H01S3/225 ,  H01S3/2251 ,  H01S3/2256

Abstract: A system of controlling a wavelength of a laser beam is provided. The system comprises a stage for supporting a wafer, an optical convergence unit for emitting the laser beam moving in an optical path toward the stage, and a specific wavelength detecting sensor. The specific wavelength detecting sensor is disposed between the optical convergence unit and the stage. It includes a laser beam absorbing structural body for absorbing a specific wavelength of the laser beam emitting toward the stage. A wavelength controlling unit for selectively controlling the wavelength of the laser beam is also provided.

公开(公告)号：US20050078729A1

公开(公告)日：2005-04-14

申请号：US10682567

申请日：2003-10-09

Applicant: Zhong-Quan Zhao

Inventor： Zhong-Quan Zhao

IPC: H01S3/10 ,  H01S3/13 ,  H01S3/22

CPC classification number: H01S3/10 ,  H01S3/1303

Abstract: An excited state atomic line filter. The present invention solves the problem of lack of ground state resonant lines in at wavelengths substantially longer than those of visible light. Atomic line filters of the Faraday or Voigt crossed polarizer type are provided in which alkali metal atomic vapor in a vapor cell is excited with a pump beam to an intermediate excited state where a resonant absorption line, at a desired wavelength, is available. A magnetic field is applied to the cell producing a polarization rotation for polarized light at wavelengths near the resonant absorption lines. Thus all light is blocked by the cross polarizers except light near one of the spaced apart resonant lines. However, the polarization of light at certain wavelengths near the resonant is rotated in the cell and therefore passes through the output polarizer.

Abstract translation: 激态态原子线滤波器。 本发明解决了在基本上长于可见光的波长的波长下缺少基态谐振线路的问题。 提供了法拉第或Voigt正交偏振器类型的原子线滤光器，其中在蒸气室中的碱金属原子蒸汽被泵浦光束激发到中间激发态，其中所需波长的谐振吸收线可用。 向细胞施加磁场，产生在谐振吸收线附近的波长的偏振光的偏振旋转。 因此，所有的光被交叉偏振器阻挡，除了靠近一个间隔开的谐振线之外的光。 然而，谐振附近的特定波长的光的偏振在单元中旋转，因此通过输出偏振器。

公开(公告)号：US06763046B2

公开(公告)日：2004-07-13

申请号：US10029008

申请日：2001-12-20

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

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

IPC: H01S510

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：US20040066810A1

公开(公告)日：2004-04-08

申请号：US10639241

申请日：2003-08-11

Inventor： Randy Dean May

IPC: H01S003/10 ,  H01S003/13

CPC classification number: G01J3/02 ,  G01J3/0286 ,  G01J3/26 ,  G01J3/28 ,  G01J9/00 ,  H01S3/1303 ,  H01S5/0014 ,  H01S5/0617 ,  H01S5/0687 ,  H01S5/4087

Abstract: The method and system operate to maintain a widely tunable laser (WTL) at a selected transmission wavelength. To lock the WTL to an ITU grid line, a portion of the output beam from the WTL is routed through the etalon to split the beam into a transmission line for detection by an etalon fringe detector. Another portion of the beam is routed directly to a laser wavelength detector to determine the power of the beam. A wavelength-locking controller compares signals from the two detectors and adjusts the temperature of the etalon to align the wavelength of one of the transmission lines of the etalon with the wavelength of the output beam, then controls the WTL in a feedback loop to lock the laser to the etalon line. The wavelength-locking controller thereafter monitors the temperature of the etalon and keeps the temperature constant to prevent any wavelength drift attributable to the etalon.

Abstract translation: 该方法和系统用于维持在选定的透射波长下的广泛可调激光（WTL）。 为了将WTL锁定到国际电联电网线路，来自WTL的输出波束的一部分被路由通过标准具将光束分成传输线，以便由标准具条纹检测器进行检测。 光束的另一部分被直接路由到激光波长检测器以确定光束的功率。 波长锁定控制器比较来自两个检测器的信号，并调节标准具的温度以使标准具的传输线之一的波长与输出光束的波长对准，然后在反馈回路中控制WTL以锁定 激光到标准具线。 此后，波长锁定控制器监测标准具的温度并保持温度恒定，以防止归因于标准具的任何波长漂移。

公开(公告)号：US06587484B1

公开(公告)日：2003-07-01

申请号：US09685212

申请日：2000-10-10

Applicant: Randy Dean May

Inventor： Randy Dean May

IPC: H01S310

CPC classification number: H01S5/0687 ,  H01S3/1303 ,  H01S5/0617 ,  H01S5/4087

Abstract: The method and apparatus operates to calibrate a transmission laser of the dense wavelength division multiplexer (DWDM). In one example, the transmission laser is a widely tunable laser (WTL) to be tuned to one of a set of International Telecommunications Union (ITU) transmission grid lines for transmission through an optic fiber. The WTL is tuned to the ITU grid using an etalon and a gas cell having acetylene, hydrogen cyanide or carbon dioxide. Initially, the absolute transmission wavelengths of the WTL are calibrated by routing an output beam from the WTL through the etalon and through the gas cell while varying tuning parameters of the WTL to thereby generate an etalon spectrum and a gas absorption spectrum both as functions of the tuning parameters. The etalon and gas absorption spectra are compared, along with input reference information specifying gas absorption as a function of absolute wavelength, to determine the absolute transmission wavelength for the WTL as a function of the tuning parameters. The WTL is then tuned to align the transmission wavelength of the WTL to an ITU transmission grid line.

Abstract translation: 该方法和装置用于校准密集波分复用器（DWDM）的传输激光器。 在一个示例中，传输激光器是要调谐到一组国际电信联盟（ITU）传输网格线之一的可广泛调谐的激光器（WTL），用于通过光纤传输。 使用标准具和具有乙炔，氰化氢或二氧化碳的气室将WTL调整到国际电联网格。 最初，WTL的绝对透射波长通过在WTL的输出光束通过标准具和通过气体单元的同时改变WTL的调谐参数进行校准，由此产生标准具光谱和气体吸收光谱，作为 调整参数。 将标准具和气体吸收光谱与指定作为绝对波长的函数的气体吸收的输入参考信息进行比较，以确定作为调谐参数的函数的WTL的绝对透射波长。 然后调整WTL以使WTL的传输波长与ITU传输网格线对齐。

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：US20020044575A1

公开(公告)日：2002-04-18

申请号：US09811090

申请日：2001-03-17

Inventor： Randy Dean May

IPC: H01S003/10

CPC classification number: H01S5/0687 ,  H01S3/1303 ,  H01S5/0617 ,  H01S5/4087

Abstract: A system and method is provided to calibrate a transmission laser, such as a widely tunable laser (WTL), within a dense wavelength division multiplexer (DWDM) for transmission through an optic fiber. The WTL is tuned to the ITU grid using an etalon and a gas cell. The absolute transmission wavelengths of the WTL are calibrated by routing a WTL output beam through the etalon and through the gas cell while varying tuning parameters of the WTL to generate an etalon spectrum and a gas absorption spectrum, both as functions of the tuning parameters. The etalon and gas absorption spectra are compared, along with input reference information specifying gas absorption as a function of absolute wavelength, to determine the absolute transmission wavelength for the WTL as a function of the tuning parameters. The WTL is then tuned to align the transmission wavelength of the WTL to an ITU transmission grid line.

Abstract translation: 提供了一种用于校准在致密波分复用器（DWDM）内的传输激光器（例如广泛可调激光器（WTL））以通过光纤传输的系统和方法。 WTL使用标准具和气体电池调整到国际电联电网。 WTL的绝对透射波长通过将WTL输出光束穿过标准具并通过气体单元进行校准，同时改变WTL的调谐参数以产生标准具谱和气体吸收光谱，两者都作为调谐参数的函数。 将标准具和气体吸收光谱与指定作为绝对波长的函数的气体吸收的输入参考信息进行比较，以确定作为调谐参数的函数的WTL的绝对透射波长。 然后调整WTL以使WTL的传输波长与ITU传输网格线对齐。