Studies on the Thermal Effect Managements in the Laser-Diode Pumped Solid-State Laser Module

激光二极管泵浦固体激光器模块的热效应管理研究

基本信息

批准号：
11680499
负责人：
YAMANAKA Masanobu
金额：
$ 2.24万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11680499/
关键词：
Laser-diode pumping Solid-state laser Thermal effect Thermal lensing Thermal birefrinegence Thermal deformation Faraday rotator Pockels cell ポッケルスセル 45度ファラデー旋光子 45度ファラデー施光子 4分の1波長板

项目摘要

1.IntroductionWhen a laser-diode-pumped high-average-power solid-state laser driver module Is deveroped for the laser-tnertial -fusion energy (IFE), thermal effect, such as thermal lerislng, thermal birefringence and thermal deformation, in the laser medium and the active optical elements should be compensated for. In this studies, a 3D thermal-effect analysis code is first developed, and by comparing with experimental results the code is improved. After then by use of the code the diode-pumped solid-state laser (DPSSL) driver module is newly designed2. Design, Development and Evaluation of a DPSSL Driver ModuleA smallestoutput energy (10J x 10 H_2) HALNA (High Average-power Laser for Nuclear-fusion Application)-10 DPSSL driver module was destgned. A jet-water cooled laser-diode (LD) array was newly developed which is also useful to pump the future HALNA DPSSL.Then an evaluation method with thermal effects was developed for high-power LD arraysA high-everage power 100-W class DPSSL als … More o developed for IFE as well as for industryOutpul cliaracterisus of constructed HALNA-10 DPSSL were measured in deail, and a good agreement with the theoretical calculation was obtained. However, in oder tu reallze the 10 Hz operation, st is turned out that the thermal lens effect should be compensated forTo tompensate for the thermal btrefringence, It was shown that a quarter wavelength plate was useful for the DPSSL of less than 10W average powerA polarimeter to measure the 2D distribution of thermal birefrigence in the laser medium and the active optical elements, was newly developed3D thermal effects slab code (THESLAC) was tmproved and this THESLAC code explained the experlmental results3. Designlog HALNA-10〜20 DPSSL (10J〜20J×10 H_2) was designed, and it was shown the 10J〜20J output energy at 10 Hz will be acheaventBy use of the THESLAC code, a HALNA-10〜20 DPSSL (10J〜20J×10 H_2) was designed, and it was shown the 10J〜20J output energy at 10 Hz will be acheavent4. Conipensatlon of Therinal Birefrigence in the Faraday Rotator and Pockels CellWheti passing the 100 W〜1 kW 1053-nm laser light through a Faraday rotator glass, a depolarization loss over 10 % was expected experimentalty. However, such depolatization loss will be compensated for by use of a 67.5-degree quartz rotator between Faraday glassesIt was shown that the thermal birefringence, generated when passing the 100W class laser light at 1064 nm, can be compensated for by use of a 90-degree quartz rotator5. ConclusionIt was shown that the thermal effects generated in ihe HALNA-10 DPSSL can be comperisalable. Then, we have a confidence that next HALNA 10 〜 20 DPSSL will be operated at 10 Hz. The THESLAC code developed will be useful when developing the high-average power DPSSLs for industry Less

1.当激光型固态激光器激光器驱动器模块用于激光 - tnertial-fusion-Fusion Energy（IFE）时，在激光效果（例如热双发性双折射和热适量）中，应在激光介质和活性元素中进行互补。在这项研究中，首先制定了3D热效应分析代码，并通过与实验结果进行比较，改进了代码。在使用代码之后，二极管泵浦固态激光器（DPSSL）驱动器模块是新设计的2。 DPSSL驱动器模块的设计，开发和评估smallestoftut Energe（10J x 10 H_2）HALNA（核融合应用的高平均功率激光器）-10 DPSSL驱动器模块被击倒。新开发的喷气 - 水冷却激光二极管（LD）阵列也可用于泵送未来的HALNA DPSSL。然后，开发了一种具有热效应的评估方法，用于高功率LD Arraysa高生命力功率100-W类DPSSL ALS…为IFE和构建的HALNA-10 DPSSL的cliaracterus开发了更多的O，并获得了与理论计算的良好一致性。 However, in oder tu realze the 10 Hz operation, st is turned out that the thermal lens effect should be compensated forTo tompensate for the thermal btrefringence, It was shown that a quarter wavelength plate was useful for the DPSSL of less than 10W average powerA polarimeter to measure the 2D distribution of thermal birefrigence in the laser medium and the active optical elements, was newly developed3D thermal effects slab code （theSlac）被TMPRAPER，该theSlac代码解释了实验结果3。设计了DesignLog HALNA-10〜20 DPSSL（10J〜20J×10 H_2），并显示10 Hz时10J-20J输出能量将用于使用theslac代码，即Halna-10-20 dpssl（halna-10-20 dpssl）（10J-20J×10 H_2）（10J-20J×10 H_2）已设计，并显示了10 j-20J的能量。 Faraday旋转器和Pockels Celltheti在Faraday Rotator玻璃中通过100 w-1 kW 1053-nm激光的固定疗法双重晶状体的结构化，预计实验性的沉积损失超过10％。但是，这种沉积损失将通过在Faraday玻璃杯之间使用67.5度石英旋转器来补偿，表明在1064 nm处通过100W类激光光时产生的热双折射，可以通过使用90度旋转式石英旋转器5来补偿。结论表明，IHE HALNA-10 DPSSL中产生的热效应可能具有竞争力。然后，我们有信心，下一个HALNA 10-20 DPSSL将以10 Hz的速度运行。在为行业开发高平均功率DPSSL时，开发的theSlac代码将很有用