1. F-JGSB1150 2.Laser speckle measurement 3,using semiconductor laser 4.optical experiment guide 5.laser power indicatior F-JGSB1150 Laser Speckle Measurement of Transverse Minor ... equipment: Optical experiment guide, semiconductor laser, beam expander lens, collimating lens, dry plate rack, rack one-dimensional displacement, laser power indicator, frosted glass and ...