Chinese Journal of Lasers循环跃迁四能级系统中的无反转增益董雅宾 Dong Yabin, 王雪仪 Wang Xueyi, 刘文辉 Liu Wenhui, 王彦华 Wang YanhuaPublished Jan 1, 2026• 0 citationsPublisherDOI10.3788/cjl251450