Developmental Research of a Tunable Far Infrared Laser Using Germanium

锗可调谐远红外激光器的研制

• 批准号: 61840007
• 负责人: KOMIYAMA Susumu
• 金额: $ 5.31万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61840007/
• 关键词: Germanuim; Tunable Laser; Far-Infrared Laser; Semiconduetor Laser; Hot Carriers; ホットキャリア

Berofe the project had started, the only oscillation available was od waveguide modes wher Germanium specimens by themselves sereve as the optical resonator. In this project, the developments summarized below have been achieved leading to promissing prospects for mechanical tuning of wavelength over entie range of oscillation spectrum.1) Oscillation of axial modes was achieved in semiconfocal resonators with external mirrors. The directivity of the laser beam was thereby improved significantly, making possible detailed studies of the spectrum, the polarization and he gain-coefficient of oscillations.2) Wavelenght selection was attemped by incorporation an additinal structure into the resomator to work as a Fabri-Perot interfermeter.Although the principle was confirmed to work in the experiments, the selectivity was not completely satistactory in veiw of application vecause of relatively small gain-coefficients. It thus turned out the improving the gain-coefficients is necessary for the selection and the tuninf of wavalength.3) To improve gain-coefficients, studies of oscillation under uniaxial stress has been carried out, which proved to be strikingly effective thus providing promissing prospects for the future work.

在项目开始之前，唯一可用的振荡是 od 波导模式，其中锗样本本身充当光学谐振器。在该项目中，已经取得了以下概述的进展，为整个振荡光谱范围内的波长机械调谐带来了良好的前景。1）在带有外镜的半共焦谐振器中实现了轴向模式的振荡。从而显着改善了激光束的方向性，使得对光谱、偏振和振荡增益系数的详细研究成为可能。2)通过在光场干涉仪中加入附加结构来尝试波长选择，以用作法布里-珀罗干涉仪。虽然该原理在实验中被证实有效，但从应用的角度来看，选择性并不完全令人满意。 由于增益系数相对较小。由此可见，提高增益系数对于波长的选择和调谐是必要的。3)为了提高增益系数，开展了单轴应力下的振荡研究，效果显着，为今后的工作提供了良好的前景。

项目成果

S.KOmiyama, S.Kuroda and T.Yamamoto:"Polarization of the Far-infrared Laser Oscillation in P-Gein Faraday Configuration" J.Appl.Phys.62. 3552 (1987)

S.KOmiyama、S.Kuroda 和 T.Yamamoto：“P-Gein 法拉第配置中远红外激光振荡的偏振”J.Appl.Phys.62。

S.Komiyama: (Invited paper) Proceedings of the 18th International Conference on the Physice of Semiconductors (Stockholm, 1986). 1641-1650 (1986)

S.Komiyama：（特邀论文）第 18 届国际半导体物理学会议论文集（斯德哥尔摩，1986 年）。

S. Komiyama: Journal of Applied Physics. 62. 3552-3558 (1987)

S. Komiyama：应用物理学杂志。

S.Komiyama and S.Kuroda: "Remarkable Effects of Uniaxial Stress on the Far-infrared Laser Emission in P-Ge" Phys.Rev.B.

S.Komiyama 和 S.Kuroda：“单轴应力对 P-Ge 远红外激光发射的显着影响”Phys.Rev.B。

S. Komiyama: Physical Review B. (1988)

S. Komiyama：物理评论 B. (1988)