La description

Products description and characteristics of: Using laser as the light source, can be controlled laser longitudinal touch state; Helium neon laser frequency stability by using hard sealing the cavity laser with special quality, long storage life and more than ****0 hours of service Product parameter: Optical experiment guide: length **0mm; One dimensional adjustable slider rails: the horizontal moving range≥ *0mm; Helium neon laser frequency stability: output power≥ 0.8mW, power stability is better than 1%, frequency stability of better than 1× ***7, the divergence angle of the beam waist diameter of 1.7mrad, 0.*8mm, laser head sizeφ *2 × **0mm3≥ ****0h, service life; F-P scanning interferometer parameters: free spectral range 4G, fine constant greater than **0.