公开(公告)号：US20230271273A1

公开(公告)日：2023-08-31

申请号：US18027632

申请日：2021-06-30

申请人： Mitsubishi Electric Corporation

发明人： Koji FUNAOKA ,  Tatsuya YAMAMOTO ,  Yuzuru TADOKORO ,  Masayuki SAIKI ,  Hiromasa MIHARA ,  Yoshiharu KUROSAKI

IPC分类号： B23K26/0622 ,  B23K26/064

CPC分类号： B23K26/0622 ,  B23K26/064

摘要： A laser apparatus includes a laser oscillator; an acousto-optic modulation unit including a first acousto-optic modulator that diffracts a laser beam from the laser oscillator when a first ultrasonic wave is applied and a second acousto-optic modulator that diffracts a higher order beam output from the first acousto-optic modulator when a second ultrasonic wave is applied; and an amplifier that amplifies the laser beam from the acousto-optic modulation unit, a propagation direction of the first ultrasonic wave relative to a diffracted direction of the higher order beam emitted from the first acousto-optic modulator and a propagation direction of the second ultrasonic wave relative to a diffracted direction of a higher order beam emitted from the second acousto-optic modulator being different.

公开(公告)号：US20230196538A1

公开(公告)日：2023-06-22

申请号：US18008740

申请日：2020-07-15

申请人： Mitsubishi Electric Corporation

发明人： Takuya KAWASHIMA ,  Sei EBIHARA ,  Tatsuya YAMAMOTO ,  Masashi NARUSE ,  Ken HAMACHIYO

IPC分类号： G06T7/00 ,  G06T7/70 ,  G06T7/62 ,  G01N21/958 ,  G01N21/88 ,  H01S3/097

CPC分类号： G06T7/0002 ,  G06T7/70 ,  G06T7/62 ,  G01N21/958 ,  G01N21/8851 ,  H01S3/097 ,  G06T2207/20081 ,  G06T2207/20084 ,  H01S3/036

摘要： A laser system for amplifying laser light generated from a laser light source and emitting the laser light includes an optical element in an optical path of the laser light and transmits the laser light, a control device to control power to be supplied to the laser system, an imager to capture an image of the optical element, and an image processing circuitry to process the image of the optical element captured by the imager. The image processing circuitry in which reference images of the optical element corresponding to power information relating to the power are prepared in advance includes a comparison unit to compare a captured image of the optical element captured by the imager with a reference image selected by a reference image selection unit, the reference image corresponding to the power information at a time of image capturing by the imager.

公开(公告)号：US20160134075A1

公开(公告)日：2016-05-12

申请号：US14898341

申请日：2013-12-27

申请人： MITSUBISHI ELECTRIC CORPORATION

发明人： Yoichi TANINO ,  Junichi NISHIMAE ,  Tatsuya YAMAMOTO

IPC分类号： H01S3/038 ,  H01S3/10 ,  H01S3/034

CPC分类号： H01S3/038 ,  H01S3/034 ,  H01S3/076 ,  H01S3/0805 ,  H01S3/0971 ,  H01S3/10007 ,  H01S3/2232 ,  H01S3/2325 ,  H01S3/2366 ,  H01S2301/02

摘要： A gas laser device which can perform optical amplification, laser light passing through a laser gas excited by electrical discharge, including: a first and second pair of discharge electrodes arranged longitudinally along an optical axis of the laser light; at least two mirrors reflecting the laser light amplified by the gas laser, the mirrors arranged opposite to each other to interpose a first discharge region defined by the first pair of discharge electrodes and a second discharge region defined by the second pair of discharge electrodes therebetween; and a shielding member located between the first pair of discharge electrodes and the second pair of discharge electrodes, the shielding member protruding from electrode surfaces of the discharge electrodes toward the optical axis of the laser light. The configuration can efficiently suppress parasitic oscillation with a simple structure.

摘要翻译： 一种能够执行光放大的激光装置，通过通过放电激发的激光气体的激光，包括：沿着激光的光轴纵向排列的第一和第二对放电电极; 反射由气体激光器放大的激光的至少两个反射镜，彼此相对布置的反射镜，以插入由第一对放电电极限定的第一放电区域和由第二对放电电极限定的第二放电区域; 以及位于所述第一对放电电极和所述第二对放电电极之间的屏蔽部件，所述屏蔽部件从所述放电电极的电极表面朝向所述激光的光轴突出。 该结构能够以简单的结构有效地抑制寄生振荡。