公开(公告)号：EP0196856A3

公开(公告)日：1988-06-15

申请号：EP86302174

申请日：1986-03-25

申请人： TOKYO GAS CO., LTD.

发明人： Uehara, Kiyoji ,  Ueki, Takashi ,  Tanaka, Hiroaki ,  Tai, Hideo

IPC分类号： H01S03/105 ,  H01S03/106 ,  H01S03/139

CPC分类号： H01S5/14 ,  H01S3/0809 ,  H01S3/105 ,  H01S3/1061 ,  H01S3/1392 ,  H01S5/06832 ,  H01S5/4087 ,  H01S2301/04

摘要： @ There is disclosed a dual-wavelength laser apparatus including a laser emitting a laser beam consisting of two wavelength components, a methane cell for controlling and equalizing gains of the two wavelength components, a cavity length modulator including a piezoelectric element for periodically modulating the cavity length of the laser, and a feedback circuit for controlling the modulation center such that the sum of outputs of the two modulated wavelength components is kept substantially constant. The feedback circuit includes a detector for detecting a laser output, a lock-in amplifier for detecting and amplifying an output from the detector, an integrator for integrating an output from the lock-in amplifier, and a high-voltage amplifier for generating a bias voltage set by the integrator.

公开(公告)号：EP0218268A3

公开(公告)日：1988-10-12

申请号：EP86201391

申请日：1986-08-07

申请人： The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and

发明人： Hollins, Richard Charles ,  Jordan, David Lesie

IPC分类号： H01S03/02 ,  H01S03/08 ,  H01S03/20 ,  H01S03/106

CPC分类号： H01S3/07 ,  H01S3/022 ,  H01S3/08086 ,  H01S3/0826 ,  H01S3/123

摘要： A dye laser capable of lasing at a plurality of wavelengths simultaneously, eg three, comprises a corresponding plurality of transparent containers 4, 5, 6 located between a partially-reflecting mirror 1 and a tiltably adjustable retroreflecting diffraction grating 2 with the containers transversely staggered. The staggered ends of the containers are irradiated by a shallow beam 9 from a pumping laser 7 and contain separate dye solutions whereof the emis-. sion spectra increase in wavelength nearest the pumping laser. There are thus formed three parallel cavities which can lase simultaneously, tuned by the grating 2 operating in three different diffraction orders.

公开(公告)号：EP0150749A3

公开(公告)日：1988-08-31

申请号：EP85100299

申请日：1985-01-14

申请人： AMERICAN TELEPHONE AND TELEGRAPH COMPANY

发明人： Alferness, Rodney Clifford ,  Korotky, Steven Kenneth ,  Eisenstein, Gadi

IPC分类号： H01S03/03 ,  H01S03/106 ,  H01S03/08

CPC分类号： H01S3/1109 ,  H01S3/083 ,  H01S3/107 ,  H01S3/1127 ,  H01S5/146

摘要： Optical functions such as Q-switching, mode locking, cavity dumping, and modulation are generated by a simple laser arrangement which includes a gain medium and an electrically controllable, optical waveguide device optically coupled to the gain medium. The gain medium and waveguide device are either interposed between two reflective surfaces or coupled by a waveguide in order to form a single composite cavity laser structure. (Fig. 1)

公开(公告)号：EP0138452A3

公开(公告)日：1987-04-29

申请号：EP84306546

申请日：1984-09-26

申请人： FUJITSU LIMITED

发明人： Shirasaki, Masataka ,  Nakajima, Hirochika ,  Furukawa, Yasuo ,  Inagaki, Takefumi

IPC分类号： H01S03/106 ,  H01S03/18 ,  G01R33/032

CPC分类号： G01R33/0322 ,  H01S3/1066 ,  H01S5/14

摘要： A laser light source device having a laser (21) and an external resonator (3,4), wherein as a base, a Faraday rotator (5) is provided at the laser side front of a reflection plane (4) of the resonator so that clockwise and counter-clockwise circular polarized light components having frequencies slightly different to each other are generated, and if a laser such as a semiconductor laser having an eigen-mode of a linear polarization is applied, elements (6, 7) which rotate a polarization state by 90 degrees by one emission-and-return through the element, for example, quarter-wave plates, are arranged. The device does not need a strong magnetic field or a strong electric field, and can easily generate light components (ω + Δω, w - Δω) of constant strength. Thus the device can be miniaturized and a high efficiency obtained.

摘要翻译： 一种具有激光器（21）和外部谐振器（3,4）的激光光源装置，其中在谐振器的反射面（4）的激光器一侧前部设置法拉第旋转器（5）作为基座， 产生具有彼此稍微不同的频率的顺时针和逆时针圆偏振光分量，并且如果应用诸如具有线性偏振的固有模式的半导体激光器的激光器，则将元件（6,7）旋转 通过该元件的一次发射和返回，例如四分之一波片，布置了90度的偏振态。 该装置不需要强磁场或强电场，并且可以容易地产生强度恒定的光分量（ω+Δω，w-Δω）。 因此可以使装置小型化并获得高效率。