自起動克爾透鏡鎖模鈦藍寶石雷射之組裝和特性

Abstract

本實驗主要是架設一套利用虛光闌效應的自起動克爾透鏡鎖模雷射,以驗 證理論計算所推測鎖模操作位置是位於穩定中間的結果.並利用稜鏡移動 來調整雷射輸出波長,架設刀片達到控制頻寬和提高雷射輸出穩定度的目 的.得到之鎖模雷射自起動時間最短約0.5ms,輸出波長可從780nm變化 到810nm,穩定時間達四小時. We setup a self-starting kerr lens mode-locked Ti:sapphire laser system by using soft aperature effect. The output wavelength is adjusted by moving the position of the prism,and the tuning range of the wavelength is 780-810nm. We use blades to control the bandwidth and increase the stability of the laser system. The shortest self-starting time for our system is only 0.5ms, and the mode-locking operation reman stable for 4 hours. Our result confirms that the laser is operating around the center of stable range where the soft-aperturing effect is optimized as predicted by our theory.