I.L. Fabelinskii Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation
1. Introduction 341 2. Determination of the Lifetime of Phonons Produced in Stimulated Mandel'shtam-Brillouin Scattering 342 3. Methods of Direct Determination of the Time of Recovery of Absorption of Certain Dye Solutions Bleached by Intense Light 342 4. Ultrafast Optical Shutter and Some of Its Applications 345 5. Use of Pulsed Light Sources in the Shadow Method (Toepler Method) 348