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    • 32. 发明申请
    • Optical wavelength converter and image forming apparatus using the same
    • 光波长转换器及使用其的成像装置
    • US20070002909A1
    • 2007-01-04
    • US11474998
    • 2006-06-27
    • Yukio FurukawaTakashi Yuasa
    • Yukio FurukawaTakashi Yuasa
    • H01S3/10
    • H01S5/06256G02F1/3532G02F1/3775G02F2202/20H01S5/005H01S5/0092H01S5/06253H01S5/0683H04N9/3129
    • An optical wavelength converter includes a distributed Bragg reflector laser having an active area, a phase area, and a distributed Bragg reflector area in which a distributed Bragg reflector is formed; an optical wavelength conversion device for receiving fundamental wave light emitted from said distributed Bragg reflector laser and outputting second harmonic wave light of the fundamental wave light; and a control circuit for controlling an emission wavelength and a light output by controlling an injection current to be injected into the distributed Bragg reflector laser for each period. The control circuit controls the injection current to be injected into the distributed Bragg reflector laser while satisfying a condition for controlling a light output mode of the distributed Bragg reflector laser so that light energy to be inputted into the optical wavelength conversion device in each period is constant and satisfying a condition for injecting a current into each of an active area, a phase area, and a distributed Bragg reflector area in each of periods in a mode of constant amount of generated heat so that an injection current-emission wavelength characteristic in the distributed Bragg reflector area is constant.
    • 光波长转换器包括分布布拉格反射激光器,其具有有源区域,相位区域和分布式布拉格反射器区域,其中形成分布式布拉格反射器; 光波长转换装置,用于接收从所述分布布拉格反射激光器发出的基波光并输出基波光的二次谐波; 以及控制电路,用于通过控制每个时间段内要喷射到分布式布拉格反射器激光器中的喷射电流来控制发射波长和光输出。 控制电路控制喷射到分布式布拉格反射体激光器中的注入电流,同时满足用于控制分布布拉格反射器激光器的光输出模式的条件,使得在每个周期中输入到光波长转换装置的光能是恒定的 并且满足用于以恒定量的发生热量的模式在每个周期中的有源区域,相位区域和分布式布拉格反射器区域中的每一个中注入电流的条件,使得分布式发射器件中的注入电流 - 发射波长特性 布拉格反射器面积是恒定的。
    • 34. 发明申请
    • Generation of optical pulse train having high repetition rate using mode-locked laser
    • 使用锁模激光器生成具有高重复率的光脉冲串
    • US20030012235A1
    • 2003-01-16
    • US10191497
    • 2002-07-10
    • NEC CORPORATION
    • Hiroyuki Yokoyama
    • H01S003/10
    • H01S5/10H01S3/06791H01S5/026H01S5/06253H01S5/0657H01S5/1071
    • An optical pulse train generator is composed of first and second optical resonators and an optical pulse generator. The first optical resonator has therein a first optical path of a first optical path length. The second optical resonator is inserted into the first optical path. The second optical resonator has therein a second optical path of a second optical path length substantially equal to 1/m of the second optical path length, m being a natural number. The optical pulse generator provides the first optical resonator with a first optical pulse train including a component of a first repetition rate tuned corresponding to the first optical path length. The provision of the first optical pulses allows a second optical pulse isolator to be generated in the first optical resonator. The first optical resonator extracts a portion of the second optical pulse train to output an output optical pulse train.
    • 光脉冲发生器由第一和第二光谐振器和光脉冲发生器组成。 第一光谐振器具有第一光路长度的第一光路。 第二光学谐振器被插入到第一光路中。 第二光学谐振器具有基本上等于第二光程长度的1 / m的第二光程长度的第二光路,m是自然数。 光脉冲发生器为第一光学谐振器提供第一光脉冲串,其包括对应于第一光路长度调谐的第一重复频率的分量。 提供第一光脉冲允许在第一光谐振器中产生第二光脉冲隔离器。 第一光谐振器提取第二光脉冲串的一部分以输出输出光脉冲串。
    • 37. 发明公开
    • Laser diode device
    • Laserdiodenvorrichtung
    • EP2463972A2
    • 2012-06-13
    • EP11008998.4
    • 2011-11-11
    • Sony CorporationTohoku University
    • Oki, TomoyukiWatanabe, HidekiKoda, RintaroKuramoto, MasaruYokoyama, Hiroyuki
    • H01S5/10H01S5/065H01S5/0625H01S5/343H01S5/022
    • H01S5/34333B82Y20/00H01S5/06253H01S5/0658H01S5/1014H01S5/1064H01S5/141H01S5/22
    • A laser diode device includes a laminated structure in which a first compound semiconductor layer (30), a third compound semiconductor layer (40) that has a light emitting region (41) and a saturable absorption region (42), and a second compound semiconductor layer (50) are sequentially layered, a second electrode (62), and a first electrode (61). The laminated structure has ridge stripe structure (56). The second electrode is separated into a first section (62A) to obtain forward bias state by applying a direct current to the first electrode through the light emitting region and a second section (62B) to add electric field to the saturable absorption region by an isolation trench (62C). When minimum width of the ridge stripe structure is W MIN , and width of the ridge stripe structure of the second section of the second electrode in an interface between the second section of the second electrode and the isolation trench is W 2 , 1 2 /W MIN is satisfied.
    • 激光二极管装置包括层叠结构,其中具有发光区域(41)和可饱和吸收区域(42)的第一化合物半导体层(30),第三化合物半导体层(40)和第二化合物半导体 层(50)顺序层叠,第二电极(62)和第一电极(61)。 层叠结构具有脊状结构(56)。 第二电极被分成第一部分(62A),以通过通过发光区域向第一电极施加直流电流以及第二部分(62B)来获得正向偏置状态,以通过隔离将电场加到可饱和吸收区域 沟槽(62C)。 当脊条纹结构的最小宽度为W MIN时,第二电极的第二部分与隔离沟槽之间的界面中的第二电极的第二部分的脊状条纹结构的宽度为W 2,1