Background: Although cryotherapy has been reported as atechnique for depigmenting residual pigmented patches inpatients with universal vitiligo, Q-switched Nd-YAG lasershave not yet been used for this purpose. The aim of this studywas to compare the efficacy of cryotherapy with that of 532nmQ-switched Nd-YAG laser therapy for depigmentation in patientswith universal vitiligo.Method: Six adult p...

Since 1980, advanced lung carcinomas were treated with palliative laser therapy for the purpose of opening the endobronchial stenosis and obstruction by either photodynamic therapy (PDT) or Nd-YAG laser treatment at Tokyo Medical University. A total of 258 lesions were treated, 81 by PDT and 177 by Nd-YAG laser treatment. PDT achieved effective results in 61 (75%) of 81 lesions. In the Nd-YAG l...

introduction: recent use of lasers for porcelain surface treatment for adhesion of brackets to restorations has not only showed some promising results, but is also accompanied with less undesirable effects among other advantages. the purpose of this study is the comparative electron microscope evaluation of feldspathic porcelain surfaces under irradiation by neodymium-doped yttrium aluminium ga...

Posterior capsular opacification Yag laser PCIOL Pupil Visual acuity Cataract is one of the most leading cause of curable blindness all over world. In the developing word most popular method of cataract operation is extra capsular cataract extraction (ECCE) with posterior chamber into ocular lens in plantation eye (PCIOL) by Various Methods. This hold true for our county and Rajasthan state too...

以Nd∶YAG、Cr∶Nd∶YAG和Ce∶Nd∶YAG三种激光材料为研究对象，采取以空间应用和地面应用为导向的两种太阳光谱模型，计算了太阳辐射光谱与材料吸收光谱之间的重叠效率。将激光材料的吸收系数引入重叠效率，分析了经吸收系数修正后，激光材料的太阳光谱匹配效率随吸收长度的变化关系。当接近光谱匹配效率极限值时，地面太阳光谱模型下Nd∶YAG、Cr∶Nd∶YAG和Ce∶Nd∶YAG所需要的吸收长度分别为6.5 cm、4.4 cm和3.7 cm，空间太阳光谱模型下所需要的吸收长度分别为7.3 cm、4.3 cm和3.8 cm，所研究的吸收长度为激光材料的长度参数设计提供了可供参考的最大值。同时Ce∶Nd∶YAG晶体计算出的长度最短，预计泵浦光在该材料中传输时引入的散射损耗将最小，因此以Ce∶Nd∶YAG晶体作为激光材料，有望进一步提高和改善太阳光泵浦激光器的输出性能。

The emission characteristics of debris from laser-produced tin plasma were investigated for an extreme ultraviolet lithography (EUV) light source. The ions and droplets emitted from tin plasma produced by a CO2 laser or an Nd: YAG laser were detected with Faraday cups and quartz crystal micro-balance (QCM) detectors, respectively. A higher ion kinetic energy and a lower droplet emission were ob...