Double-resonance stimulated Raman scattering in micrometer-sized droplets
Double-resonance stimulated Raman scattering in micrometer-sized droplets
复制标题
微米级液滴中的双共振受激拉曼散射
DOI：
10.1364/josab.7.002079
复制
发表时间：
1990
影响因子：
1.9
通讯作者：
A. Campillo
中科院分区：
文献类型：
--
作者：
H. Lin;A. Huston;J. Eversole;A. Campillo
气溶胶流的编程大小斜坡允许Q开关锁模532 nm激光器周期性地满足各种低阶（l = 2至l = 4）TE和TM形态依赖的共振输入条件在23.0-23.7 μ m直径的乙醇液滴。由此产生的大小与幅度谱的受激拉曼散射光揭示了高Q模式，通常不会观察到的弹性散射。同时弹性散射测量允许明确识别这些输入共振。受激拉曼散射和时间历程的相对输出强度意味着，由液滴从理想均匀球体的离开，l = 2模式的Q退化到107的值。
Programmed size ramping of an aerosol stream permits a Q-switched mode-locked 532-nm laser to satisfy periodically the input resonance condition of various low-order (l = 2 to l = 4) TE and TM morphology-dependent resonances in 23.0–23.7-μm-diameter ethanol droplets. The resulting size-versus-amplitude spectra of stimulated Raman scattered light revealed high-Q modes that are not normally observed in elastic scattering. Simultaneous elastic scattering measurements permit unambiguous identification of these input resonances. The relative output intensities of stimulated Raman scattering and time histories imply that the Q of the l = 2 modes is degraded to a value of 107 by the departure of the droplet from an ideal homogeneous sphere.