公开(公告)号：US5953358A

公开(公告)日：1999-09-14

申请号：US980750

申请日：1997-12-01

申请人： Takuya Ishikawa ,  Akihiko Kasukawa

发明人： Takuya Ishikawa ,  Akihiko Kasukawa

IPC分类号： H01S5/00 ,  H01S5/10 ,  H01S5/16 ,  H01S3/19 ,  H01S3/096

CPC分类号： H01S5/16 ,  H01S5/1082

摘要： A semiconductor laser has a laser active layer for receiving current from a pair of electrode for lasing operation. The end region in the vicinity of both the facets of the active layer does not receive current from the electrode. The interfaces between the end portions and the central portion receiving current are slanted from the plane normal to the optical axis of the laser, for stable mode operation of the laser device.

摘要翻译： 半导体激光器具有用于从一对电极接收电流用于激光操作的激光器活性层。 有源层的两个小面附近的端部区域没有从电极接收电流。 端部和中心部分接收电流之间的界面从垂直于激光光轴的平面倾斜，用于激光装置的稳定模式操作。

公开(公告)号：US5767704A

公开(公告)日：1998-06-16

申请号：US705930

申请日：1996-08-30

申请人： Francis Willard Larson

发明人： Francis Willard Larson

IPC分类号： H01S5/042 ,  H01S5/062 ,  H03K17/041 ,  H03K3/42 ,  H01S3/096

CPC分类号： H03K17/04113 ,  H01S5/042 ,  H01S5/0427 ,  H01S5/06213

摘要： In a laser diode which forms read and write functions upon an electro-optic memory, a drive circuit provides power modulation during the read function and sufficient power to perform a write function. During a read function, transistors connected in an emitter coupled switch pair modulate the power delivered to the laser diode. At the emitters of each transistors are a pair of Schottky diodes which enhance the switching speeds of the transistors. Logic is provided to completely turn on the read switch during the time the write switch is on in order to provide sufficient power to the laser diode in order to perform a write function.

摘要翻译： 在电光存储器上形成读和写功能的激光二极管中，驱动电路在读取功能期间提供功率调制，并具有足够的功率来执行写入功能。 在读取功能期间，以发射极耦合开关对连接的晶体管调制输送到激光二极管的功率。 在每个晶体管的发射极是一对肖特基二极管，其增强晶体管的开关速度。 提供逻辑以在写开关打开期间完全打开读开关，以便向激光二极管提供足够的功率以便执行写功能。

公开(公告)号：US5502741A

公开(公告)日：1996-03-26

申请号：US216301

申请日：1994-03-22

申请人： John E. Carroll ,  Mark C. Nowell

发明人： John E. Carroll ,  Mark C. Nowell

IPC分类号： H01S5/042 ,  H01S5/062 ,  H01S5/0625 ,  H01S5/12 ,  H01S3/096 ,  H01S3/10 ,  H01S3/18

CPC分类号： H01S5/0625 ,  H01S5/0427 ,  H01S5/06213 ,  H01S5/06258 ,  H01S5/12

摘要： A DFB laser is provided with a top electrode divided symmetrically into two or three in-line separate elements through which a bias current is applied with a symmetrical distribution and through which a modulation current is applied with an antisymmetric (push-pull) distribution.

摘要翻译： DFB激光器设置有对称地分成两个或三个在线分离元件的顶部电极，通过该顶部电极以对称分布施加偏置电流，通过该顶部电极以反对称（推挽）分布施加调制电流。

公开(公告)号：US4669086A

公开(公告)日：1987-05-26

申请号：US598199

申请日：1984-04-09

申请人： Kazuhisa Kaede ,  Hiroyoshi Rangu

发明人： Kazuhisa Kaede ,  Hiroyoshi Rangu

IPC分类号： H01S5/00 ,  H01S3/137 ,  H01S5/0625 ,  H01S5/227 ,  H01S3/096

CPC分类号： H01S3/137 ,  H01S5/0625 ,  H01S5/227 ,  H01S5/2275

摘要： A frequency-stabilized semiconductor laser oscillator in which a control signal derived from a modulation signal is applied to a second optical waveguide adjacent the first optical waveguide in order to make the overall optical path between both waveguides constant despite variations in the refractive index of the optical path in the first optical waveguide. The control signal may be a current signal derived by shifting the phase of the variation of the current of the modulation signal with respect to time, or a voltage signal derived by shifting the phase of the variation of the voltage of the modulation signal with respect to time. If a current control signal is used, the compensation mechanism is an increase in the carrier density in a second optical waveguide. If a voltage control signal is used, the compensation mechanism is an electro-optic variation of the refractive index in the second optical waveguide.

摘要翻译： 一种频率稳定的半导体激光振荡器，其中从调制信号导出的控制信号被施加到与第一光波导相邻的第二光波导，以使得两个波导之间的整个光路恒定，尽管光学器件的折射率有变化 第一光波导路径。 控制信号可以是通过相对于时间偏移调制信号的电流的变化的相位而导出的电流信号，或通过将调制信号的电压的变化的相位相对于 时间。 如果使用电流控制信号，则补偿机构是第二光波导中载流子密度的增加。 如果使用电压控制信号，则补偿机构是第二光波导中的折射率的电光变化。

公开(公告)号：US5912694A

公开(公告)日：1999-06-15

申请号：US923968

申请日：1997-09-05

申请人： Hiroyuki Miyake ,  Chikaho Ikeda

发明人： Hiroyuki Miyake ,  Chikaho Ikeda

IPC分类号： H01S5/00 ,  B41J2/47 ,  H01S5/042 ,  H01S5/062 ,  H01S5/068 ,  H01S5/0683 ,  H01S3/00 ,  H01S3/096

CPC分类号： H01S5/0683 ,  B41J2/471 ,  H01S5/042 ,  H01S5/0425 ,  H01S5/06209 ,  H01S5/06812

摘要： The present invention relates to a laser diode driving circuit for supplying a drive current to a laser diode, a semiconductor integrated circuit for driving the laser diode, and an image recording apparatus in which a step of executing a scanning on a predetermined member to be scanned with a laser beam holding image information is included in an image recording step. The laser diode is certainly kept in a no light emitting state at a timing when the laser diode should be kept in the no light emitting state and is allowed to emit a laser beam of the light quantity faithfully corresponding to the drive current at a timing when the drive current is supplied to the laser diode. A bias current out of the bias current and a drive current which are supplied to a laser diode 1 is further divided into a first bias current and a second bias current. Normally, only the first bias current is supplied to the laser diode. The second bias current is supplied and stopped in a manner similar to the drive current.

摘要翻译： 本发明涉及一种用于向激光二极管提供驱动电流的激光二极管驱动电路，用于驱动该激光二极管的半导体集成电路，以及一图像记录装置，其中对要扫描的预定部件执行扫描的步骤 具有保持图像信息的激光束被包括在图像记录步骤中。 当激光二极管保持在不发光状态的时刻，激光二极管肯定保持在不发光状态，并且允许激光二极管在不发光状态下正确地发射与驱动电流相对应的光量的激光束， 驱动电流被提供给激光二极管。 提供给激光二极管1的偏置电流和驱动电流之外的偏置电流进一步分为第一偏置电流和第二偏置电流。 通常，只有第一偏置电流被提供给激光二极管。 以与驱动电流相似的方式供给和停止第二偏置电流。

公开(公告)号：US5287375A

公开(公告)日：1994-02-15

申请号：US16937

申请日：1993-02-12

申请人： Takashi Fujimoto

发明人： Takashi Fujimoto

IPC分类号： H04B10/40 ,  H01S5/042 ,  H01S5/0683 ,  H01S5/40 ,  H04B10/07 ,  H04B10/50 ,  H04B10/564 ,  H04B10/58 ,  H04B10/60 ,  H01S3/096

CPC分类号： H01S5/4025 ,  H01S5/0683 ,  H01S5/06832 ,  H01S5/4031

摘要： An apparatus for driving a laser diode array of the present invention has a reference drive circuit for driving one of laser diodes, a photodiode for detecting an output light of the laser diode, and a control circuit. The reference drive circuit is supplied with input clock signals continuously. The control circuit controls all drive circuits in accordance with an output signal of the photodiode.

摘要翻译： 用于驱动本发明的激光二极管阵列的装置具有用于驱动激光二极管之一的基准驱动电路，用于检测激光二极管的输出光的光电二极管和控制电路。 参考驱动电路连续提供输入时钟信号。 控制电路根据光电二极管的输出信号控制所有的驱动电路。

公开(公告)号：US4802178A

公开(公告)日：1989-01-31

申请号：US849960

申请日：1986-04-10

申请人： Israel Ury

发明人： Israel Ury

IPC分类号： G02B6/42 ,  H01S5/024 ,  H01S3/096

CPC分类号： H01S5/02415 ,  G02B6/4202 ,  G02B6/4248 ,  H01S5/02272 ,  H01S5/02284 ,  H01S5/02438 ,  Y10S257/93

摘要： A small module contains means for converting an electrical signal to a correspondingly modulated light signal on an optical fiber. Frequency of the signal can range from D.C up to many gigahertz. A semiconductor laser diode is mounted on a high thermal conductivity substrate on a thermoelectric cooler for controlling laser temperature. The optical fiber output is soldered to the laser substrate with an end in alignment with the laser junction. A laser bias circuit is on a connection substrate adjacent to the laser substrate. A connection substrate also includes a deposited signal lead line connected to the bias circuit by an impedance matching means. Electrical signals from the pin of an external coaxial connector are coupled to the lead line. The laser bias circuit and signal lead line are electrically connected to the laser diode by wires between the connection substrate and the laser substrate. A photodiode in the module in the light path from the laser provides a control signal.

摘要翻译： 小模块包含用于将电信号转换为光纤上相应调制的光信号的装置。 信号的频率范围可以从直流到几千兆赫。 半导体激光二极管安装在用于控制激光温度的热电冷却器上的高导热性基板上。 将光纤输出焊接到激光基板上，其端部与激光连接部对准。 激光偏置电路位于与激光基板相邻的连接基板上。 连接基板还包括通过阻抗匹配装置连接到偏置电路的沉积信号引线。 来自外部同轴连接器的引脚的电信号耦合到引线。 激光偏置电路和信号引线通过连接基板和激光基板之间的导线与激光二极管电连接。 来自激光器的光路中的模块中的光电二极管提供控制信号。

公开(公告)号：US4761788A

公开(公告)日：1988-08-02

申请号：US792055

申请日：1985-10-28

申请人： Norman R. Dietrich ,  Walter R. Holbrook ,  Anderson F. Johnson, Jr. ,  Alfred Zacharias

发明人： Norman R. Dietrich ,  Walter R. Holbrook ,  Anderson F. Johnson, Jr. ,  Alfred Zacharias

IPC分类号： H01S5/00 ,  H01L23/12 ,  H01S5/022 ,  H01S5/024 ,  H01S5/062 ,  H01S3/096

CPC分类号： H01S5/02415 ,  H01S5/02284 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01S5/02272 ,  H01S5/02276 ,  H01S5/06226

摘要： A semiconductor laser mount is disclosed for use in high frequency (>500 Mb/s) applications. The mount comprises a stripline transmission path and resistive element formed in series with the optical device. Since the current sources used to modulate optical devices at these bit rates have a large impedance relative to that of the optical devices, the stripline is used as an impedance controlling network to provide frequency independent coupling from the signal source to the device and the resistive element is used to compensate the variation of the impedance of the device to essentially match that of the stripline. Since the impedance of individual optical devices may vary, the resistive element is sized to provide optimum matching. Both the stripline and resistive element are integrated with the mount material to form a monolithic structure. Additionally, low frequency optical device inputs may be formed on an isolated portion of the mount to increase the versatility of the arrangement by increasing the operable bandwidth of the optical device.

摘要翻译： 公开了用于高频（> 500Mb / s）应用的半导体激光器安装座。 支架包括带状线传输路径和与光学装置串联形成的电阻元件。 由于用于以这些比特率调制光学器件的电流源相对于光学器件具有大的阻抗，因此带状线用作阻抗控制网络，以提供从信号源到器件和电阻元件的频率无关耦合 用于补偿装置的阻抗的变化基本上与带状线的阻抗的变化。 由于各个光学器件的阻抗可能会变化，所以电阻元件的大小可提供最佳匹配。 带状线和电阻元件都与安装材料集成以形成整体结构。 此外，低频光学器件输入可以形成在安装座的隔离部分上，以通过增加光学器件的可操作带宽来增加布置的通用性。

公开(公告)号：US6072816A

公开(公告)日：2000-06-06

申请号：US23085

申请日：1998-02-13

申请人： Toshifumi Shin'e

发明人： Toshifumi Shin'e

IPC分类号： H04B10/516 ,  H01S5/00 ,  H01S5/042 ,  H01S5/0683 ,  H04B10/2507 ,  H04B10/61 ,  H01S3/096

CPC分类号： H01S5/042 ,  H01S5/0428

摘要： A laser-diode drive circuit which maintains the speed of an optical output power waveform even if the pulsed current waveform of the laser diode changes. The laser diode drive circuit includes a differential transistor pair whose emitted electrodes are connected together, emitter-follower transistors for driving the differential transistor pair, a bias current supply transistor for supplying the laser diode with a bias current, a current source transistor serving as the current source of the differential transistor pair, and an automatic power control circuit. The collector electrode of one of the transistors of the differential transistor pair is connected to both the collector electrode of the bias current supply transistor and the cathode electrode of the laser diode. Current control transistors are provided for setting the currents of the emitter-follower transistors. The bias current supply transistor, the current source transistor and the base electrodes of the first and second current control transistors are connected to the control voltage output of the automatic power control circuit.

摘要翻译： 激光二极管驱动电路即使激光二极管的脉冲电流波形发生变化，也保持光输出功率波形的速度。 激光二极管驱动电路包括发射电极连接在一起的差分晶体管对，用于驱动差分晶体管对的射极跟随器晶体管，用于向激光二极管提供偏置电流的偏置电流源晶体管，用作 差分晶体管对的电流源和自动功率控制电路。 差分晶体管对的一个晶体管的集电极连接到偏置电流源晶体管的集电极和激光二极管的阴极两者。 提供电流控制晶体管用于设置发射极跟随晶体管的电流。 偏置电流源晶体管，电流源晶体管和第一和第二电流控制晶体管的基极连接到自动功率控制电路的控制电压输出。

公开(公告)号：US5299057A

公开(公告)日：1994-03-29

申请号：US968639

申请日：1992-10-29

申请人： William C. Rideout ,  Robert Olshansky ,  Elliot G. Eichen

发明人： William C. Rideout ,  Robert Olshansky ,  Elliot G. Eichen

IPC分类号： H01S5/026 ,  H01S5/50 ,  H01S3/19 ,  H01S3/096

CPC分类号： H01S5/0264 ,  H01S5/50

摘要： A semiconductor optical amplifier with a high speed photodetector acting as an optical tap is disclosed. The device functions simultaneously as an in-line optical amplifier and as a high-speed photodetector tap. An in-line an optical amplifier is combined with a waveguiding, high speed (low capacitance) reverse-biased photodetector that absorbs only a percentage of the amplified signal, allowing the remainder to pass through without distortion.

摘要翻译： 公开了一种具有作为光学抽头的高速光电探测器的半导体光放大器。 该器件同时作为在线光放大器和高速光电探测器。 在线的光放大器与波导，高速（低电容）反向偏置光电检测器组合，其仅吸收放大信号的百分比，允许其余部分通过而不失真。