Research on Dynamics in Laser Complex Systems

激光复杂系统动力学研究

• 批准号: 10044175
• 负责人: OTSUKA Kenju
• 金额: $ 1.66万
• 依托单位: Tokai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10044175/
• 关键词: Microchip solid-state lasers; Nonlinear gain; Quantum interference; Stimulated Raman oscillation; Random chaotic burst; chaos synchronization; Quantum-noise-induced order; Self-mixing laser measurements; LD励起; Nd:YVO_4; LNP; 動的不安定性; カオス同期; カオ

We studied physics of laser-diode (LD)-pumped multimode microchip solid-state lasers focussing on nonlinear dynamics inherent in optical complex systems possessing large degrees of freedom. Applications of LD-pumped microchip solid-state lasers has been also demonstrated. Research achievements include :1. Realization of single-frequency operation owing to high-density pumping. Design of stable single transversemode operation resulting from thermal lens effect.2. Theoretical and experimental demonstrations of nonlinear modal interactions resulting from nonlinear gain or quantum interference inherent in microcavity lasers and resultant dynamic instabilities.3. Observation of stimulated Raman-like oscillations and 1.5μm emissions from LD-pumped Nd microchip laser due to phonons created by non-radiative transition from the absorption to the upper laser-level.4. Experimental observation and theoretical confirmation of chaos synchronization and phase squeezed state in a microchip laser array with Doppler feedback5. Observation of noise-induced random chaotic burst generations and antiphase dynamics in multi-mode microchip solid-state lasers with optical feedback and theoreical verifications. Demonstration of quantum noise-induced ordering of chaotic oscillations in lasers with frequency-shifted feedback6. Realization of multimode green lasers without green problem featuring multitransition oscillations and demon stration of applicability to terahertz coherent wave generations.7. Realizations of ultrahigh sensitivity laser Doppler velocimetry, vibrometry and imaging ultilizing self-mixing modulation effects in microchip solid-state lasers

本文研究了激光二极管泵浦多模微芯片固体激光器的物理特性，重点研究了大自由度光学复杂系统的非线性动力学特性。本文还演示了ld泵浦微芯片固态激光器的应用。研究成果包括：1.；高密度抽运实现单频运行。基于热透镜效应的单横模稳定运行设计。由微腔激光器中固有的非线性增益或量子干涉引起的非线性模态相互作用的理论和实验证明以及由此产生的动态不稳定性。3 . ld泵浦Nd微芯片激光器由吸收到上激光能级非辐射跃迁产生的声子激发的类拉曼振荡和1.5μm发射的观察。多普勒反馈微芯片激光阵列混沌同步与相位压缩态的实验观察与理论证实基于光反馈的多模微芯片固体激光器中噪声诱导随机混沌爆发的产生和反相位动力学观察及理论验证。频移反馈激光中量子噪声诱导混沌振荡排序的论证[j]。无多跃迁振荡绿色问题的多模绿色激光器的实现及其对太赫兹相干波产生的适用性论证。在微芯片固体激光器中利用自混合调制效应实现超高灵敏度激光多普勒测速、测振和成像

项目成果

K.Otsuka, R.Kawai and Y.Asakawa: "Intracavity Second-Harmonic and Sum-Frequency Generation with a Laser-Diode-Pumped Multitransition LiNdP_4O_<12> Laser"Opt. Lett.. 24, (22). 1611-1613 (1999)

K.Otsuka、R.Kawai 和 Y.Asakawa：“利用激光二极管泵浦多跃迁 LiNdP_4O_<12> 激光器产生腔内二次谐波和和频”选项。

大塚建樹: "光非線形ダイナミクスとその周辺"レーザー研究. 28・10. 663-670 (2000)

大冢健树：“光学非线性动力学及其周边”激光研究28・10（2000）。

J.-Y.Ko: "Quantum-Noise-Induced Order in Lasers Placed in Chaotic Oscillation by Frequency-Shifted Feedback"Physical Review Letters. (印刷中).

J.-Y.Ko：“频移反馈混沌振荡中的量子噪声诱导秩序”物理评论快报（正在出版）。

S.-L.Hwong, J.-L.Chem, K.Otsuka, Y.-H.Huang, R.Kawai and K.Ohki: "1.5-μm Emissions from Laser-Diode-Pumped Nd-Doped Microchip Solid-State Lasers"Opt.Lett.. 25, (9). 646-648 (2000)

S.-L.Hwong、J.-L.Chem、K.Otsuka、Y.-H.Huang、R.Kawai 和 K.Ohki：“激光二极管泵浦 Nd 掺杂微芯片固体的 1.5 μm 发射国家激光”Opt. Lett.. 25, (9). 646-648 (2000)

Kenju Otsuka: "Instrinsic Instability and Locking of Pulsation Frequencies in Free-Running Two-Mode Class-B Lasers"Physical Review A. (印刷中). (2000)

Kenju Otsuka：“自由运行的二模 B 类激光器中的固有不稳定性和脉动频率锁定”物理评论 A.（出版中）。