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    • 3. 发明专利
    • Controller for laser diode beam
    • 用于激光二极管的控制器
    • JPS58202581A
    • 1983-11-25
    • JP2087482
    • 1982-02-12
    • Nippon Telegr & Teleph Corp
    • KAWAGUCHI HITOSHI
    • G02B6/122G02F1/35H01S3/106H01S5/00H01S5/026H01S5/042H01S5/06H01S5/062
    • H01S3/1061H01S5/0601H01S5/06216
    • PURPOSE:To widen a wavelength range and a repetitive range of a short pulse row by optically connecting an amplification region, a light absorption region and an optical guide in series in the resonator direction and making the lifetime of a small number of carriers in the light absorption region smaller than the turnaround time of beams. CONSTITUTION:A laser is constituted in such a manner that ohmic-contact electrodes 25, 26 are attached to a four-layer double hetero-structure wafer in which n type InP 21, an InGaAsP active layer 22, p type InP 23 and p type InGaAsP 24 are grown onto an n type InP substrate 20 in succession. The InGaAsP optical guide 27, absorption thereof to laser beams is small, is attached to the absorption region B. An optical resonator 28 is formed by the amplification region A and an optical guide region C. Forward DC currents are injected until laser oscillation is obtained as currents injected to the amplification region A, and forward currents of low density are injected or inverse voltage is applied to the light absorption region B and the lifetime of a small number of carriers in the light absorption region B is made smaller than time required for one reciprocation in the resonator 28 of beams.
    • 目的:通过在谐振器方向上将放大区域,光吸收区域和光导体串联光学连接来扩大短脉冲行的波长范围和重复范围,并使光的少数载流子的寿命 吸收区域小于梁的周转时间。 构成:以欧姆接触电极25,26连接到四层双异质结构晶片的方式构成激光器,其中n型InP 21,InGaAsP活性层22,p型InP 23和p型 +>型InGaAsP 24依次生长到n型InP衬底20上。 InGaAsP光导27,其对激光束的吸收较小,附着在吸收区域B.光学谐振器28由放大区域A和光导区域C形成。将直流电流注入直到获得激光振荡 因为注入到放大区域A的电流和低密度的正向电流被注入,或者反射电压被施加到光吸收区域B,并且使光吸收区域B中少量载流子的寿命小于 在波束的谐振器28中的一个往复运动。
    • 4. 发明专利
    • Figure eight fiber laser for ultrashort pulse generation
    • 用于超声波脉冲发生的图型光纤激光器
    • JP2010062568A
    • 2010-03-18
    • JP2009204203
    • 2009-09-04
    • Ofs Fitel Llcオーエフエス ファイテル,エルエルシー
    • NICHOLSON JEFFREY W
    • H01S3/06H01S3/083H01S3/098
    • H01S3/06791H01S3/06712H01S3/07H01S3/106H01S3/1061H01S3/1112H01S3/1608
    • PROBLEM TO BE SOLVED: To provide a method for constructing a figure eight PMFE fiber laser capable of generating ultrashort output pulses required for many uses while maintaining the advantage of a polarization maintaining configuration. SOLUTION: The polarization-maintaining figure eight (PMFE) fiber laser is configured to generate ultrashort (femtosecond) output pulses by intentionally inserting asymmetry (in the form of a phase bias) into the bi-directional loop of the fiber laser. The introduction of asymmetry (via an asymmetric coupler, splice, attenuator, fiber bend, multiple amplifying sections, or the like) allows for an accumulation of a phase difference within the bi-directional loop sufficient to create modelocking and generate the ultrashort output pulses. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种构建能够在保持偏振维持配置的优点的同时产生许多用途所需的超短输出脉冲的图8的PMFE光纤激光器的方法。 解决方案:偏振保持图8(PMFE)光纤激光器被配置为通过有意将非对称性(以相位偏置的形式)插入到光纤激光器的双向环路中来产生超短(飞秒)输出脉冲。 引入不对称性(通过非对称耦合器,接合,衰减器,光纤弯曲,多个放大部分等)允许双向环路内的相位差积累足以产生锁模并产生超短输出脉冲。 版权所有(C)2010,JPO&INPIT