Fabrication of Self Q-Switehed, Co-Doped Waveguide Laser by Use of PLD

利用 PLD 制造自调Q、共掺杂波导激光器

• 批准号: 12450035
• 负责人: OBARA Minoru
• 金额: $ 1.79万
• 依托单位: KEIO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12450035/
• 关键词: Waveguide Laser; Laser Ablation; Nd:GGG; Nd.Cr.YAG.; Thin Film Laser; Thin Film Growth; Nd:KGW; PLD; Nd: GGG; Nd : KGW; Nd : GGG; Nd:GGG; Nd,Cr:YAG

1. Waveguide laser thin films have been improved.2. Optimum Nd and Cr ion density, crystal length, output coupler have theoretically been determined with computer simulation of Cr, Nd co-doped GGG waveguide lasers.3. With ceramic targets, high quality (110) oriented Nd:KGW thin films were fabricated. The substrate of(1102) sapphire is found to be better than (100) YAG substrate on which the high quality Nd:KGW thin films are grown. The K-enriched target and growth temperature of 700 ℃ were found optimum for the best growth conditions. In addition post-annealing improved the crystal quality of the fabricated films.4. Grating formation on the Nd:GGG thin film for pumping are successfully demonstrated with interferometric femtosecond laser processing.5. The report of this project has been drawn up.

1.对波导激光薄膜进行了改进。通过计算机模拟，从理论上确定了掺铬、钕共掺GGG波导激光器的最佳离子密度、晶体长度、输出耦合器。采用陶瓷靶材，制备了高质量的(110)取向的NdKGW薄膜。在(1102)蓝宝石衬底上生长高质量的NdKGW薄膜时，(1102)蓝宝石衬底优于(100)YAG衬底。确定了最佳生长条件为富K目标和生长温度为70 0℃。另外，后退火热处理提高了薄膜的结晶质量。利用干涉飞秒激光加工技术，成功地在用于泵浦的Nd：GGG薄膜上实现了光栅的形成。这个项目的报告已经起草好了。

项目成果

T.Okato, P.A.Atanasov, M.Obara: "Pulsed laser deposition of Nd : KGd(WO_4)_2 waveguide in Ar and O_2 environment"Applied Physics A. (in print). (2003)

T.Okato、P.A.Atanasov、M.Obara：“Ar 和 O_2 环境中 Nd 的脉冲激光沉积：KGd(WO_4)_2 波导”应用物理 A.（印刷中）。

K.Oi: "Femtosecond laser interferometric processing of Nd:GGG planar optical waveguide"Proc. of SPIE Laser Applications in Microelectronics and Optoelectronics Manufacturing VIII. 4977-56 (in print). (2003)

K.Oi：“Nd:GGG 平面光波导的飞秒激光干涉加工”Proc.

S.Fukaya, et al.: "Fabrication of Nd^<3+>, Cr^<4+> co-doped Gd_3 Ga_5 O_<12> thin film waveguide by two-target pulsed laser deposition"Applied Surface Science. 177. 147-151 (2001)

S.Fukaya等人：“通过双靶脉冲激光沉积法制备Nd^<3>、Cr^<4>共掺杂Gd_3Ga_5O_<12>薄膜波导”应用表面科学。

T.Okato: "Fabrication of Nd : KGW film on a Si---"Appl. Phys. A. (in print). (2003)

T.Okato：“Nd 的制造：Si 上的 KGW 薄膜——”Appl。

T.Okato: "Pulsed laser deposition of Nd:KGd(WO4)2 waveguide in Ar and O_2 Environment"Applied PhysicsA. in print. (2003)

T.Okato：“Ar和O_2环境中Nd:KGd(WO4)2波导的脉冲激光沉积”应用物理学A。