公开(公告)号：JPH01121827A

公开(公告)日：1989-05-15

申请号：JP28016487

申请日：1987-11-05

Applicant: HAMAMATSU PHOTONICS KK

Inventor： MATSUMOTO OSAMU ,  KOBAYASHI YUJI ,  OBAYASHI YASUSHI ,  SUZUKI HIDEO ,  SUZUKI TAKASHI ,  OSUMI YASUTSUGU

IPC: G02F1/37 ,  H01S5/00

Abstract: PURPOSE:To miniaturize the title element with a simple structure by using a combination of a Fresnel lens and optical material to collimate the laser light from a semiconductor laser and to increase the power density thereof. CONSTITUTION:This element has the semiconductor laser 1, the Fresnel lens 2 which the laser from the semiconductor laser 1 enters, and the optical material 3 which the laser light from the Fresnel lens 2 enters. The optical material, i.e., a nonlinear optical crystal 3 is positioned by the prescribed disposition to take the prescribed plane of polarization of the laser light into consideration and the incident face 6 thereof is so cut out as to maximize the nonlinear effect. Grating patterns 8 are inscribed on the surface 7 of the Fresnel lens 2. The function equal to the function in the case of providing a collimating lens and condenser lens system is thereby obtd. and the optical element is made simple in the structure and small in the size.

公开(公告)号：JPH01121825A

公开(公告)日：1989-05-15

申请号：JP28016387

申请日：1987-11-05

Applicant: HAMAMATSU PHOTONICS KK

Inventor： MATSUMOTO OSAMU ,  KOBAYASHI YUJI ,  OBAYASHI YASUSHI ,  SUZUKI HIDEO ,  SUZUKI TAKASHI ,  OSUMI YASUTSUGU

IPC: G02F1/35 ,  G02F1/355 ,  G02F1/361

Abstract: PURPOSE:To provide the title element having a simple structure and small size by providing the function to collimate the laser light from a semiconductor laser to collimated beams of light and to increase the power density thereof to the optical material itself. CONSTITUTION:This optical element has the semiconductor laser 1 and the optical material 2 which the laser light from the semiconductor laser 1 enters. The function to collimate the laser light to the collimated beams of light and to increase the power density is provided to the optical material 2 itself. The optical material, i.e., a nonlinear optical crystal 2 is positioned by the prescribed disposition to take the prescribed plane of polarization of the laser light into consideration. The incident face 3 thereof is so cut out as to maximize the nonlinear effect. In addition, grating patterns 4 are inscribed on the incident face 3 of the nonlinear optical crystal 2. The function similar to the function in the case of providing a collimating lens or condenser lens system to the element is thereby obtd. and the optical element is made simpler in the structure and smaller in the size.

公开(公告)号：JPS63184383A

公开(公告)日：1988-07-29

申请号：JP1580587

申请日：1987-01-26

Applicant: HAMAMATSU PHOTONICS KK

Inventor： OSUMI YASUTSUGU ,  MORITA NOBUHIRO ,  SUZUKI HIDEO ,  KOBAYASHI YUJI ,  OBAYASHI YASUSHI ,  MATSUMOTO OSAMU

IPC: H01S3/10 ,  H01S3/108

Abstract: PURPOSE:To facilitate calibrating the wavelength scale of a wavelength reader for an output light and adjusting a light axis by a light axis regulator simultaneously by introducing a calibration light to the position of the light axis regulator in the latter stage of an optical parametric oscillator through a half mirror. CONSTITUTION:A continuous laser beam with a known wavelength, for instance the 2nd harmonic of an Nd-YAG laser device which is a laser beam with a wavelength of 530 nm, is generated and reflected and refracted by a half mirror 10 and transmitted through a light axis regulator 11 to a spectroscope 7. In the spectroscope 7, if there is a difference between a read sc ale value and the real wavelength of an inputted calibration light, the difference is calibrated. After the calibration in the spectroscope 7, a control signal is outputted and the crystal 5 of an optical parametric oscillator 6 is turned to vary the wavelength of the output light of the oscillator 6 so as to make the wavelength 530 nm which is equal to the wavelength of the calibration light in the spectroscope 7. As a discrepancy (d) of the light axis 8 of the output light is produced by the turn of the crystal 5, the calibration light is inputted so as to coincide with the cross point of the light from a wavelength calibration light source generator 18 axis 8 which is moved by the discrepancy (d) and the half mirror 10. Then a control signal is outputted from a light axis adjustment driving circuit 24 and the dielectric 17 of the light axis regulator 11 to adjust the light axis.

公开(公告)号：JPS63184382A

公开(公告)日：1988-07-29

申请号：JP1580387

申请日：1987-01-26

Applicant: HAMAMATSU PHOTONICS KK

Inventor： KOBAYASHI YUJI ,  OSUMI YASUTSUGU ,  SUZUKI HIDEO ,  MORITA NOBUHIRO ,  MATSUMOTO OSAMU ,  OBAYASHI YASUSHI

IPC: H01S3/10 ,  G02F1/39 ,  H01S3/108

Abstract: PURPOSE:To obtain a stable output light without loss of a power density by a method wherein, even if an incident light misses the incident plane of a crystal, the crystal is moved by a transfer mechanism to correct the discrepancy and the matching conditions of the incident light are satisfied. CONSTITUTION:A part of the output of an optical parametric oscillator 6 is transmitted to a photosensor 22 and the position of a light axis is detected and the detected value is transmitted to a comparator 24. A datum obtained when there is no discrepancy of the light axis is supplied to the comparator 24 from a memory 23 and compared with the output of the light axis discrepancy caused by the rotation of a crystal 5 to output a signal corresponding to the discrepancy (h). If the discrepancy (h) becomes large to the extent that an incident light misses the incident plane of the crystal 5, a corresponding number of pulses are outputted from a calculator 25 and further transmitted to the linear pulse motor 18 of a transfer mechanism 16 through a pulse generator 20. Then a linearly-driven table is moved on linear guides 19 and 19 by the linear pulse motor 18 to correct the discrepancy of the incident light.

公开(公告)号：JPS63165806A

公开(公告)日：1988-07-09

申请号：JP31090886

申请日：1986-12-27

Applicant: HAMAMATSU PHOTONICS KK

Inventor： OBAYASHI YASUSHI ,  SUZUKI HIDEO ,  MATSUMOTO OSAMU ,  KOBAYASHI YUJI ,  MORITA NOBUHIRO ,  OSUMI YASUTSUGU

IPC: H01S3/10 ,  G02B5/28 ,  H01S3/08

Abstract: PURPOSE:To obtain required reflection band width by setting up the reflection factor of a multilayer film as a multivariable function expressed by the film thickness values of respective dielectric layers and determining the film thickness values of respective dielectric layers so that the difference between the function and the reflection factor of an objective wavelength is minimized. CONSTITUTION:A multilayer film mirror 5 is formed by alternately superposing dielectric films 61, 63... with a high refractive index nH and dielectric films 62, 64... with a low refractive index nL. The film thickness 61, 62... are respectively different and is not fixed. When the reflection factor Rlambda of the mirror 5 is defined as the multivariable function of the film thickness x1-xn of the films 61-6n, an equation I can be obtained. An equation II is obtained by specifying a reflection factor rlambda in each wavelength as objective spectral characteristics. In the equation II, a minimum value is substituted for the function F so that the difference between the multivariable function and the reflection factor of the objective wavelength is minimized to calculate the film thickness values x1-xn. Consequently, film constitution having the objective reflection factor characteristics can be obtained.

公开(公告)号：JPS63161435A

公开(公告)日：1988-07-05

申请号：JP31007486

申请日：1986-12-24

Applicant: HAMAMATSU PHOTONICS KK

Inventor： KOBAYASHI YUJI ,  OSUMI YASUTSUGU ,  SUZUKI HIDEO ,  MORITA NOBUHIRO ,  MATSUMOTO OSAMU ,  OBAYASHI YASUSHI

IPC: H01S3/10 ,  G02F1/37 ,  G02F1/39 ,  H01S3/108 ,  H01S3/109

Abstract: PURPOSE:To obtain a device easy for handling and to prevent the reduction of power density as well and to obtain a stable output light by correcting the optical axis in an n-th order harmonic generating part with respect to the optical axis deviation due to the change of the angle of incidence in an optical parametric oscillating part. CONSTITUTION:An incidence angle control part 14 which controls the incident angle between a crystal in an optical parametric oscillating part 1 and an n-th order harmonic generating part 2 and a mobile device 20 for optical axis correction which moves the n-th order harmonic generating part 2 to correct the deviation of the optical axis are provided. The angle of incident of the laser beam incident on the crystal in the optical parametric oscillating part 1 is changed by the incidence angle control part to emit the laser beam within a prescribed wavelength range, and for example, the angle of incidence is normally changed within the range of + or -30 deg. in case of an urea single crystal. When the optical axis is deviated in accordance with the variation by this change of the angle of incidence, it is detected by a photosensor 22 such as a solid-state image pickup element and the detection signal is sent to the mobile device 20. Then, this signal is compared with preliminarily set data to sent a pulse corresponding to the extent of deviation of the optical axis to the mobile device 20, and a motor is driven and the n-th order harmonic generating part 2 is moved in the direction crossing the optical axis to correct the deviation of the optical axis.

公开(公告)号：JPS63159831A

公开(公告)日：1988-07-02

申请号：JP31007186

申请日：1986-12-24

Applicant: HAMAMATSU PHOTONICS KK

Inventor： OBAYASHI YASUSHI ,  SUZUKI HIDEO ,  MATSUMOTO OSAMU ,  KOBAYASHI YUJI ,  MORITA NOBUHIRO ,  OSUMI YASUTSUGU

IPC: H01S3/10 ,  G02F1/39 ,  H01S3/108

Abstract: PURPOSE:To make the wavelength variable within the whole area cover range of a visible area, and to continuously obtain a high conversion efficiency and a stable and high output, by using an incident excitation light to a non-linear optical crystal, as the light beam of wavelength within a prescribed range from an excimer laser. CONSTITUTION:The excitation light 2 of wavelength lambdap is outputted from an excimer laser 1, made incident on a non-linear optical crystal 7 through a collimator lens 4 and an incident mirror 5, an optical parametric oscillation is generated, the oscillation light beams 9 of wavelength lambdas and lambdai are emitted through a mirror 6, and by turning a turning shaft 8, the rotary angle of the crystal 7 is controlled, and when a phase matching angle is changed, the wavelength lambdas and lambdai are charged continuously within a prescribed range. In accordance with the kind of the laser beam 1, the wavelength of the excitation light 2 becomes 308nm, 249nm, and 351nm respectively.

公开(公告)号：JPS63159829A

公开(公告)日：1988-07-02

申请号：JP31007286

申请日：1986-12-24

Applicant: HAMAMATSU PHOTONICS KK

Inventor： SUZUKI HIDEO ,  OSUMI YASUTSUGU ,  MORITA NOBUHIRO ,  MATSUMOTO OSAMU ,  KOBAYASHI YUJI ,  OBAYASHI YASUSHI

IPC: H01S3/10 ,  G02F1/35 ,  H01S3/108

Abstract: PURPOSE:To obtain a laser light whose pulse width is a high level output and whose wavelength is variable, by a simple constitution, by allowing laser excitation light to be made incident on a ureas single crystal whose single crystal turning angle is controlled. CONSTITUTION:The laser excitation light 23 from a laser oscillator 21 is turned centering around a turning shaft 28 and made incident on a urea single crystal whose turning angle is controlled and whose non-linear optical constant is large, and a laser light 29 whose phase matching angle is controlled and whose wavelength is varied by following up the variation of an incident angle is emitted from a crystal 22. Since the urea single crystal whose non-linear constant is high is used by this simple constitution which requires no mirror, a large power is obtained, and when an excitation light whose pulse width is a picosecond and whose energy density is large is made incident, a laser emitted light whose pulse width is a picosecond, whose energy density is high and whose wavelength is variable can be obtained.

公开(公告)号：JP2006023367A

公开(公告)日：2006-01-26

申请号：JP2004199291

申请日：2004-07-06

Applicant: Hamamatsu Photonics Kk ,  Meisho Kiko Kk ,  Nalux Co Ltd ,  ナルックス株式会社 ,  明昌機工株式会社 ,  浜松ホトニクス株式会社

Inventor： JITSUNO TAKAHISA ,  KANABE TADASHI ,  ADACHI SHINJI ,  YORIKANE TOSHIAKI ,  MATSUMOTO OSAMU ,  TOKUMURA KEIU

IPC: G02B26/06 ,  G02B5/10

Abstract: PROBLEM TO BE SOLVED: To provide a shape variable mirror with which damage of a mirror or driving devices can be prevented by releasing stress to be generated at the joint parts among the mirror and the driving devices.
SOLUTION: The shape variable mirror is driven so as to correct the wavefront of incident light. In the shape variable mirror, a bar-shaped member (103) is provided between a mirror part (101) and the driving device (102) of a pertinent mirror part and the mirror is equipped with a block part (107) whose length in the longitudinal direction is 0.2 to 0.6 times as long as the length of the bar-shape member and whose cross-sectional area is 9 to 64 times as large as the cross-sectional area of the member in a plane vertical to the longitudinal direction at a position including the center of the longitudinal direction of the member.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种形状可变镜，通过释放在反射镜和驱动装置之间的接合部处产生的应力，可以防止反射镜或驱动装置的损坏。

解决方案：驱动形状可变镜以校正入射光的波前。 在形状可变镜中，在相应的镜部分的镜部分（101）和驱动装置（102）之间设置条形部件（103），并且反射镜配备有块部分（107） 长度方向为棒状构件的长度的0.2〜0.6倍，其横截面积为与纵向方向垂直的平面中的构件的截面积的9〜64倍 包括构件的纵向方向的中心的位置。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005283635A

公开(公告)日：2005-10-13

申请号：JP2004093207

申请日：2004-03-26

Applicant: Hamamatsu Photonics Kk ,  Yasukazu Izawa ,  靖和 井澤 ,  浜松ホトニクス株式会社

Inventor： YASUHARA AKIRA ,  MATSUMOTO OSAMU ,  KAWASHIMA TOSHIYUKI ,  SUGA HIROBUMI ,  KANABE TADASHI ,  YAMANAKA MASANORI ,  NORIMATSU TAKAYOSHI ,  IZAWA YASUKAZU

IPC: G02B27/28 ,  G02F1/09

CPC classification number: G02F1/09

Abstract: PROBLEM TO BE SOLVED: To provide a Faraday rotator having reduced thermal effect. SOLUTION: The Faraday rotator 10 has a plurality of optical media 11 to 14 which are apart from one another and a permanent magnet 22 which applies a magnetic field to those optical media. The optical media and permanent magnet are housed in housings 20 and 24. The Faraday rotary 10 also has flow passages for index matching liquid 64. The optical media are cooled with the index matching liquid flowing in the flow passage. This Faraday rotator can obtain a rotational angle of a polarization direction with shorter optical media than a Faraday rotator using a single optical medium. Accordingly, heating value accumulated in each optical media is reduced to reduce thermal effect due to internal heat generation of the optical media. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供具有降低的热效应的法拉第旋转器。 解决方案：法拉第转子10具有彼此分开的多个光学介质11至14以及向这些光学介质施加磁场的永磁体22。 光学介质和永磁体容纳在壳体20和24中。法拉第旋转器10还具有用于折射率匹配液体64的流动通道。光学介质被冷却，其中流动通道中的折射率匹配液体。 该法拉第旋转器可以使用较短的光学介质获得偏振方向的旋转角度，而不是使用单个光学介质的法拉第旋转器。 因此，减少了在每个光学介质中累积的热值，以减少由于光学介质的内部发热引起的热效应。 版权所有（C）2006，JPO＆NCIPI