• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1993 Fiscal Year Final Research Report Summary

Study of Optical Logic Devices Using the Injected Light in a Transverse Zeeman Laser

Research Project

Project/Area Number 03650040
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 物理計測・光学
Research InstitutionDoshisha University

Principal Investigator

OHTA Tatehisa  Doshinsha University, Faculty of Engineering, Professor, 工学部, 教授 (40066246)

Project Period (FY) 1991 – 1993
KeywordsTransverse Zeeman laser / Injection locking / Optical logic device / Polarization anisotropy / Polarization switching / 633 nm HeNe laser / sigma and pi modes / Master and slave lasers
Research Abstract

In the study of optical logic devices using the polarization switching by the injected light in a transverse Zeeman laser, the following results were obtained.
(1) In a 633 nm HeNe laser with internal mirrors, adjacet longitudinal modes show orthogonal polarizations each other. A good correlation between natural axs of the polarization and loss anisotropy of cavity Q was found.
(2) In the transverse Zeeman laser, the polarization characteristics depend on cavity loss anisotropy. The polarization in the laser with a large loss anisotropy keeps the directions of the natural axs. On the other hand, the polarization in the laser with small loss anisotropy, the direction depends on applied magnetic fields strength and the angle between the laser and the magnetic field. In a magnetic field strength, a polarization rotating phenomenon from sigma and pi mode direction is observed by varing magnetic strength. This rotated polarization switches alternatively between adjacent longitudinal modes and these alternating polarizations are not perpendicular to each other.
(3) Optical polarization switching of the laser with a polarizer in external cavity depends on the quantities of feedback light and cavity anisotropy. When the feedback light is strong, the polarization switching occurs with natural axis in laser with large anisotropy. On the other hand, when the feedback light is strong and the laser has small anisotropy, polarization switching is induced with respect to the anisotropy of the external cavity. These switchings were also found in the system of a slave laser using injected ltight by a master laser. Sweeping injected laser frequency, the hysteresis phenomenon on the switching has been observed. This can utilize as an optical flip-flop.
(4) In the transverse Zeeman laser, the polarization switching condition can control by the magnetic fields strength. Then this system may expect to use as a practical logic device by small-sized and stable improvements.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 田中義人: "マイクロプロセッサ制御による内部鏡HeNeレーザの周波数安定化(II)" レーザー研究. 20. 392-398 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 安田博: "内部鏡633nmHeNe横ゼーマンレーザにおける特異な偏光状態" 電子情報通信学会技術研究報告. OQE92-14. 1-8 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鳴海建治: "外部リング共振器を用いたヨウ素分子吸収スペクトルの高感度分光" 電子情報通信学会技術研究報告. OQE92-163. 73-78 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大田建久: "2モード安定化HeNeレーザ" 光学. 22. 341-342 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鳴海建治: "内部鏡633nmHeNeレーザ共振器におけるQ値とその偏光依存性の測定" 同志社大学理工学研究報告. 34. 114-134 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masaru Mamiya: "Optical polarization flipping properties of a HeNe laser with polarizer in the external cavity" 電子情報通信学会技術研究報告. OQE93-61. 19-24 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Seitaro Tsujimoto: "Fast Frequency Control by Manipulating the Discharge Current on Polarization-Stabilized 633nm HeNe Laser" 電子情報通信学会技術研究報告. OQE93-149. 7-11 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hiroshi Yasuda: "The unique polarization caused by the frequency locking between σ and π modes in a transverse Zeeman laser" JJAP. 33pt.1. 1637-1644 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshito Tanaka: "Frequency Stabilization of an Internal-Mirror He-Ne Laser by Means of a Microprocessor Controller (II)" The Review of Laser Engineering. vol.20. 392-397 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshi Yasuda: "The unique polarization of a 633 nm He-Ne laser with internal mirrors in transverse magnetic field" Technical Report of IEICE. vol.OQE 92-14. 1-8 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kenji Narumi: "High-Sensitivity Spectroscopy of Iodine Absorption Utilizing an External Optical Ring Resonator" Technical Report of IEICE. vol.OQE 92-163. 73-78 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tatehisa Ohta: "2 Mode-Stabilized HeNe Laser" Optics. vol.22. 341-342 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kenji Narumi: "Q Value Measurements and Their Polarization Dependence of Internal-Mirror 633 nm HeNe Laser Cavities" The Science and Engineering Review of Doshisha University. vol.34. 114-134 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masaru Mamiya: "Optical polarization flipping properties of a HeNe laser with polarizer in the external cavity" Technical Report of IEICE. vol.OQE 93-61. 19-24 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Seitaro Tsujimoto: "Fast Frequency Control by Manipulating the Discharge Current in Polarization-Stabilized 633 nm HeNe Laser" Technical Report of IEICE. vol.OQE 93-149. 7-11 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshi Yasuda: "The unique polarization caused by the frequency locking between sigma and pi modes in a transverse Zeeman Laser" JJAP. vol.33, Pt.1. 1637-1644 (1994)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 1995-03-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi