公开(公告)号：US20170063019A1

公开(公告)日：2017-03-02

申请号：US15307896

申请日：2015-02-09

Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Bong Ahn YU ,  Young Chul NOH ,  Woo Jin SHIN ,  Chang soo JUNG ,  Yeung Lak LEE

IPC: H01S3/067 ,  H01S3/16 ,  H01S3/094

CPC classification number: H01S3/06754 ,  H01S3/06758 ,  H01S3/06762 ,  H01S3/094003 ,  H01S3/094053 ,  H01S3/094096 ,  H01S3/1618 ,  H01S3/2391

Abstract: Disclosed herein is an optical fiber laser device including a seed unit for providing at least two seed lights having different wavelengths; and an amplifying unit for amplifying the at least two seed lights. The amplifying unit includes: a preamplifying unit for amplifying the at least two seed lights by using excitation light of which the wavelength is shorter than the wavelengths of the seed lights; and a final amplifying unit to which no separate excitation light source is provided. The final amplifying unit amplifies the seed light having the longest wavelength by using the other seed light as excitation light with respect to the seed light having the longest wavelength among the at least two seed light.

Abstract translation: 本发明公开了一种光纤激光装置，包括用于提供具有不同波长的至少两个种子光的种子单元; 以及用于放大所述至少两个种子光的放大单元。 放大单元包括：前置放大单元，用于通过使用波长短于种子光的波长的激发光来放大所述至少两个种子光; 以及没有设置单独的激发光源的最终放大单元。 最终的放大单元通过使用其他种子光作为相对于至少两个种子光中具有最长波长的种子光的激发光来放大具有最长波长的种子光。

公开(公告)号：US20160111849A1

公开(公告)日：2016-04-21

申请号：US14894986

申请日：2013-12-27

Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Woo Jin SHIN

IPC: H01S3/13 ,  H01S3/067

CPC classification number: H01S3/1302 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/0092 ,  H01S3/06754 ,  H01S3/10 ,  H01S3/10015 ,  H01S3/2375 ,  H01S5/0608 ,  H01S5/0609 ,  H01S5/40 ,  H01S5/4012

Abstract: An apparatus for generating burst-mode laser includes: a trigger signal generator for generating a burst trigger signal; a first light source for generating a first optical signal in a form of pulse; a second light source for generating a second optical signal in the form of pulse; an optical switch for selecting between the first optical signal and the second optical signal according to the burst trigger signal to output the selected one; an optical amplifier for amplifying the optical signal output from the optical switch; and a wavelength tuner for tuning a wavelength of the optical signal amplified by the optical amplifier. An oscillation line-width and/or a polarization state of the first optical signal are different from an oscillation line-width and/or a polarization state of the second optical signal.

Abstract translation: 用于产生突发模式激光器的装置包括：用于产生脉冲串触发信号的触发信号发生器; 用于产生脉冲形式的第一光信号的第一光源; 用于产生脉冲形式的第二光信号的第二光源; 光开关，用于根据突发触发信号在第一光信号和第二光信号之间进行选择，以输出所选择的信号; 光放大器，用于放大从光开关输出的光信号; 以及用于调谐由光放大器放大的光信号的波长的波长调谐器。 第一光信号的振荡线宽度和/或偏振状态与第二光信号的振荡线宽度和/或偏振状态不同。

公开(公告)号：US20160099542A1

公开(公告)日：2016-04-07

申请号：US14892573

申请日：2014-05-30

Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Woo Jin SHIN

IPC: H01S3/16 ,  H01S3/094 ,  H01S3/067

CPC classification number: H01S3/1616 ,  H01S3/0064 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/06762 ,  H01S3/06783 ,  H01S3/07 ,  H01S3/094003 ,  H01S3/094015 ,  H01S3/094053 ,  H01S3/094084 ,  H01S3/1608

Abstract: The present disclosure provides an optical amplifier using an optical fiber. The optical fiber includes a single-mode optical fiber in which a plurality of rare earth elements is doped simultaneously; first and second optical fiber gratings disposed at opposite sides of the optical fiber, respectively, and totally reflecting light having a wavelength in a specific range; a pumping light source configured to generate a pumping light to excite rare earth ions in the optical fiber; and an optical coupler connected to the optical fiber and configured to transmit a light signal generated from a light source and the pumping light generated from the pumping light source to the optical fiber. Therefore, it is possible to obtain efficient amplification of a light signal through a simple configuration using the rare earth elements-doped optical fiber.

Abstract translation: 本公开提供了一种使用光纤的光放大器。 光纤包括同时掺杂多个稀土元素的单模光纤; 第一和第二光纤光栅分别设置在光纤的相对侧，并且全反射具有特定范围波长的光; 泵浦光源，被配置为产生泵浦光以激发光纤中的稀土离子; 以及光耦合器，其连接到所述光纤并且被配置为将从光源产生的光信号和从所述泵浦光源产生的泵浦光传输到所述光纤。 因此，可以通过使用稀土元素掺杂光纤的简单配置来获得光信号的有效放大。

公开(公告)号：US20150071313A1

公开(公告)日：2015-03-12

申请号：US14480101

申请日：2014-09-08

Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Changsoo JUNG ,  Young-Chul NOH ,  Bong-Ahn YU ,  Woo Jin SHIN ,  Yeung Lak LEE

IPC: H01S3/10

CPC classification number: H01S3/0092 ,  G02B3/00 ,  G02B5/3083 ,  G02B27/0025 ,  G02B27/0062 ,  G02F1/3534 ,  H01S3/005 ,  H01S5/0092

Abstract: Disclosed is a laser wavelength conversion apparatus. The apparatus includes a focusing lens formed of birefringent material and configured to have same refractive index for an infrared laser beam and a green laser beam having different polarization direction and focus the infrared laser beam and the green laser beam without chromatic aberration, and a sum frequency generator configured to combine the infrared laser beam and the green laser beams focused by the focusing lens to generate an ultraviolet laser beam. The apparatus of the present invention can solve a problem due to chromatic aberration of the focusing lens, thereby improving wavelength conversion efficiency and beam quality.

Abstract translation: 公开了一种激光波长转换装置。 该装置包括由双折射材料形成的聚焦透镜，并且被配置为对于红外激光束具有相同的折射率和具有不同偏振方向的绿色激光束，并且聚焦红外激光束和绿色激光束而没有色差，并且和频率 发射器被配置为组合红外激光束和由聚焦透镜聚焦的绿色激光束以产生紫外激光束。 本发明的装置可以解决由于聚焦透镜的色差引起的问题，从而提高了波长转换效率和光束质量。