GOST R ISO/TP 11146-3-2008 Lasers and laser-related equipment. Test methods for laser beam widths, divergence angles and beam propagation ratios. Part 3. Intrinsic and geometrical laser beam classification, propagation and details of test methods
2008GOST R ISO/TP 11146-3-2008 Lasers and laser-related equipment. Test methods for laser beam widths, divergence angles and beam propagation ratios. Part 3. Intrinsic and geometrical laser beam classification, propagation and details of test methods