Oh dear. Your new laser came with a partially mangled datasheet. You can see the numbers but not the units. But that's okay! You're experienced, and you know what the units must be for this typical laser that is easily visualized yet not used for burning things. Fill in the blanks with the right units. i) Wavelength: 532 ii) Output power: 25 iii) Beam diameter: 5 iv) Divergence angle: 0.14 3 ( You are told that a laser at 660 nm can tune ±5 nm. How far can its frequency tune? You want to expand a laser beam to make it 3 times as large. You will use two lenses, one of which has a 25 mm focal length. What should the other lens be? How should the two lenses be arranged (i.e. which goes first, and how far apart are they)? A traveling wave is described by ψ=7sin(3z+6t+12). Find the amplitude, frequency, direction of travel, and wave speed. (Do not assume the wave speed is that of light).