‘Tunable’‘lasers’ having any of the following: 1. Output wavelength less than 600 nm and any of the following: a. Output energy exceeding 50 mJ per pulse and ‘peak power’ exceeding 1 W; or b. Average or CW output power exceeding 1 W; Note : Item 1. above does not apply to dye ‘lasers’ or other liquid ‘lasers’, having a multimode output and a wavelength of 150 nm or more but not exceeding 600 nm and all of the following: 1. Output energy less than 1,5 J per pulse or a ‘peak power’ less than 20 W; and 2. Average or CW output power less than 20 W. 2. Output wavelength of 600 nm or more but not exceeding 1 400 nm, and any of the following: a. Output energy exceeding 1 J per pulse and ‘peak power’ exceeding 20 W; or b. Average or CW output power exceeding 20 W; or 3. Output wavelength exceeding 1 400 nm and any of the following: a. Output energy exceeding 50 mJ per pulse and ‘peak power’ exceeding 1 W; or b. Average or CW output power exceeding 1 W;