CAJ | 학술논문

为了研究预准直后铬原子束1维多普勒激光准直效果随着激光功率、激光失谐量和作用区域等各种参量变化的情况,采用适当步长的4阶Runge-Kutta算法进行了理论分析,得到了铬原子束1维多普勒激光准直效果与各种激光参量之间的变化关系.结果表明,铬原子束经过离坩埚口600mm、横向尺寸为5mm狭缝预准直后,在激光功率为20mW、激光失谐量为-0.5?梦踉拥淖匀幌呖?、作用区域为2倍最小作用区域的情况下,可以获得最好的激光准直效果.
위료연구예준직후락원자속1유다보륵격광준직효과수착격광공솔、격광실해량화작용구역등각충삼량변화적정황,채용괄당보장적4계Runge-Kutta산법진행료이론분석,득도료락원자속1유다보륵격광준직효과여각충격광삼량지간적변화관계.결과표명,락원자속경과리감과구600mm、횡향척촌위5mm협봉예준직후,재격광공솔위20mW、격광실해량위-0.5?몽량옹뇨균황력?、작용구역위2배최소작용구역적정황하,가이획득최호적격광준직효과.
In order to study how the collimation of chromium (Cr) atomic by means of 1-D Doppler laser varying with laser power,laser detuning and interaction length after pre-collimation,the correlation between the collimation and laser parameters was obtained after simulation with the fourth-order Runge-Kutta type algorithm at an adaptive step size.The results show that after pre-collimated by a slit in 5mm long,600mm far away from the downstream,the best collimation results can be obtained at laser power of 20mW,laser detuning of -0.5┌(┌is the natural line-width of Cr),and twice of the minimum interaction zone.