P225.2 99042422一种新型的激光测距仪理想光源=A new kind ofpreferable light source for laser range finder[刊,中]/柳强,王月珠,姚宝权,王骐(哈尔滨工业大学光电子技术研究所.黑龙江,哈尔滨(150001))//激光技术.—1998,22(5).—298...P225.2 99042422一种新型的激光测距仪理想光源=A new kind ofpreferable light source for laser range finder[刊,中]/柳强,王月珠,姚宝权,王骐(哈尔滨工业大学光电子技术研究所.黑龙江,哈尔滨(150001))//激光技术.—1998,22(5).—298-300报道了用光学参量振荡的方法(OPO),在Nd:YAG激光器上,用受激布里渊散射(SBS)后向放大输出作泵浦源,获得激光测距仪的理想光源(1.57 μm),最大输出能量为21.6 mJ,相应的转换效率为32%。实验结果与理论分析符合得较好。图3参6(赵桂云)P225.2 99042423二极管泵浦的Q开关Nd:YAG激光器及测距样机=Q—switched Nd:YAG laser by diode pumpingand prototype of laser rangefinders[刊。展开更多
A photoacoustic piezoelectric method based on a simplified thermoelastic theory is employed to determine thermal diffusivities of biological tissues. The thermal diffu-sivities of porcine tissues with different prepar...A photoacoustic piezoelectric method based on a simplified thermoelastic theory is employed to determine thermal diffusivities of biological tissues. The thermal diffu-sivities of porcine tissues with different preparation condi-tions, including fresh, dry and specially prepared conditions, are characterized. Comparing the experimental evaluated diffusivities of the tissues in three conditions with each other, it can be seen that the diffusivities of the fresh tissues are the biggest and the diffusivities of the specially prepared tissues are bigger than that of the dry ones generally. The results show that the piezoelectric photoacoustic method is espe-cially effective for determining macro-effective (average) thermal diffusivities of biological materials with micro- inhomogeneity and easy to be performed, which can provide useful information for researching thermal characters of biological tissues.展开更多
文摘P225.2 99042422一种新型的激光测距仪理想光源=A new kind ofpreferable light source for laser range finder[刊,中]/柳强,王月珠,姚宝权,王骐(哈尔滨工业大学光电子技术研究所.黑龙江,哈尔滨(150001))//激光技术.—1998,22(5).—298-300报道了用光学参量振荡的方法(OPO),在Nd:YAG激光器上,用受激布里渊散射(SBS)后向放大输出作泵浦源,获得激光测距仪的理想光源(1.57 μm),最大输出能量为21.6 mJ,相应的转换效率为32%。实验结果与理论分析符合得较好。图3参6(赵桂云)P225.2 99042423二极管泵浦的Q开关Nd:YAG激光器及测距样机=Q—switched Nd:YAG laser by diode pumpingand prototype of laser rangefinders[刊。
文摘A photoacoustic piezoelectric method based on a simplified thermoelastic theory is employed to determine thermal diffusivities of biological tissues. The thermal diffu-sivities of porcine tissues with different preparation condi-tions, including fresh, dry and specially prepared conditions, are characterized. Comparing the experimental evaluated diffusivities of the tissues in three conditions with each other, it can be seen that the diffusivities of the fresh tissues are the biggest and the diffusivities of the specially prepared tissues are bigger than that of the dry ones generally. The results show that the piezoelectric photoacoustic method is espe-cially effective for determining macro-effective (average) thermal diffusivities of biological materials with micro- inhomogeneity and easy to be performed, which can provide useful information for researching thermal characters of biological tissues.
