Rate-equation model of light-induced heating in LiNbO_3-type crystals under high-average-power laser irradiation

Pressure waves induced in liquid under high laser irradiation

Investigation of absorption pump light distribution in edged-pumped high power Yb:YAGYAG disk laser

In this article, we present a specific shape of disk laser which is side-pumped by four non-symmetric hollow- ducts. The use of non-symmetric hollow duct based on two goals of the uniformity of the pump light distribution profile and the homogeneity of pump light profile through the disk. First of all we simulated the pump light distribution in the disk by using Monte-Carlo ray tracing method. ...

emittance control in high power linacs

چکیده این پایان نامه به بررسی اثر سیم پیچ مغناطیسی و کاوه یِ خوشه گر با بسامد رادیویی بر هاله و بیرونگراییِ باریکه هایِ پیوسته و خوشه ایِ ذرات باردار در شتابدهنده های خطیِ یونی، پروتونی با جریان بالا می پردازد و راه حل هایی برای بهینه نگهداشتن این کمیتها ارایه می دهد. بیرونگرایی یکی از کمیتهای اساسی باریکه هایِ ذرات باردار در شتابدهنده ها است که تاثیر قابل توجهی بر قیمت، هزینه و کاراییِ هر شتابدهند...

On the white light luminescence induced by irradiation of sodium nitrate single crystals by 1064 nm laser light

A number of wide bandgap inorganic materials can be prepared so that stimulation with nanosecond pulses of near infra-red (1064 nm—Nd:YAG fundamental) generates intense, transient white light. This light can span from 300 to 900 nm. Here, we characterize this emission from single crystal NaNO3 and show that it is due to optical breakdown in the bulk. We contrast the behavior and character of ti...

The Effect of Four Weeks Low-Power Laser Irradiation(660 nm) on Thermal Hyperalgesia in the Model of Spinal Cord Injury Induced in Adult Male Rats

‌Introduction: Spinal cord injury is one of the important unresolved problems in the medical society leading to adverse consequences, such as motionlessness and neuropathic pain. Neuropathic pain is seen in both forms of hyperalgesia and allodynia. In this study, the effects of low-level laser radiation on hyperalgesia pain have been investigated.   Material & Methods: In this experimental stu...