CAJ | 학술논문

研究表明:当探测场和驱动场都失谐时,Doppler宽度的变化仅对无反转增益的极大值有明显的影响,而且极大值随Doppler宽度的增加而迅速减小;当探测场失谐驱动场共振且Doppler宽度取适当值时,系统可以获得增益极大值中的最大值;这个最大值随原子注入速率比的增加而增加,频率上转换的程度越高,为达到这个极大值所要求的Doppler宽度越小;在开放的梯型无反转激光(LWI)系统中Doppler展宽对增益的影响与从其他LWI系统中得到的有明显的差别.
연구표명:당탐측장화구동장도실해시,Doppler관도적변화부대무반전증익적겁대치유명현적영향,이차겁대치수Doppler관도적증가이신속감소;당탐측장실해구동장공진차Doppler관도취괄당치시,계통가이획득증익겁대치중적최대치;저개최대치수원자주입속솔비적증가이증가,빈솔상전환적정도월고,위체도저개겁대치소요구적Doppler관도월소;재개방적제형무반전격광(LWI)계통중Doppler전관대증익적영향여종기타LWI계통중득도적유명현적차별.
The study shows that:When there are detunings of the probe and driving fields,the variation of Doppler width has an obvious effect only on the maximum of the invesionless gain,which decreases rapidly with Doppler width increasing;when there is a probe-detuning and the driving field is resonant,the system can get an extreme value of maximum of the invesionless gain when Doppler width takes a suitable value;the extreme values increase with the ratio of the atomic injection rates increasing;the higher the degree of the frequency up-conversion attains the extreme value is;the effect of Doppler broadening on the gain in an open ladder-type lasing without inversion(LWI) system have some obvious differences from those obtained from other LWI systems.