CAJ | 학술논문

概述了Er∶YAG晶体的光谱特性，在此基础上设计研制了2套激光装置，单灯单椭圆和双灯双椭圆聚光腔及电源，比较了两者的优缺点。针对2.94 μm铒离子激光上能级粒子寿命短、下能级粒子寿命长的特点，设计改进了激光电源；一般固体激光电源放电脉宽较宽，泵浦Er∶YAG效率不高，改进后的电源较大地压缩了氙灯放电脉冲宽度，提高了激光输出效率。在单灯单椭圆装置中，在电压1.7 kV时，获得激光输出1.08 J，斜率效率7.27‰。还阐述了2.94 μm激光与生物组织作用特点，如吸收率高、作用浅，不产生血凝等，开展了激光验血采样应用研究，取得良好效果。
개술료Er∶YAG정체적광보특성，재차기출상설 계연제료2투격광장치，단등단타원화쌍등쌍타원취광강급전원，비교료량자적우결점。침 대2.94 μm이리자격광상능급입자수명단、하능급입자수명장적특점，설계개진료격광전 원；일반고체격광전원방전맥관교관，빙포Er∶YAG효솔불고，개진후적전원교대지압축료 선등방전맥충관도，제고료격광수출효솔。재단등단타원장치중，재전압1.7 kV시，획득 격광수출1.08 J，사솔효솔7.27‰。환천술료2.94 μm격광여생물조직작용특점，여흡 수솔고、작용천，불산생혈응등，개전료격광험혈채양응용연구，취득량호효과。
This paper describes the emission spectru m characters of Er∶YAG crystal. Two sets of laser devices are designed—one is single flash tube with single ellipsoidal condenser cavity, the other is double flash tube with double ellipsoidal condenser cavity and its power supply. The level character of Er+3 ions in the crystal is that the population lif e on the up level is shorter than that on the down level,and because the ordina ry power supply has large discharging pulse width, the laser output efficiency i s low. By the method of compressing electric pulse width of discharge, the laser output efficiency is raised. At 1.7 kV, the laser output is 1.08 J, decline e fficiency is 7.27‰ in single flash tube with single ellipsoidal condenser cavi ty.This paper also describes the mutual action characters of the laser with 2.9 4 μm wave length on biological tissues, such as high absorption, acting on surf ace. The Er∶YAG laser with wavelength 2.94 μm is applied to drawing blood fr om finger,and satisfactory results are obtained.