# HW3+Sol - Homework 3 with Solutions 1 An Ar laser emits 1...

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Homework 3 with Solutions 1. An Ar laser emits 1 watts of continuous light (wavelength λ = 5.145 × 10 -7 m) in a parallel beam of 2 mm diameter in vacuum. (Use tables in next pages, and write all units properly.) (A) What is the wavelength (in Å, nm, μ m, and mm), frequency , period , wavenumber , velocity , intensity , and amplitude of the electric field of the laser light? (B) What is the energy , the linear and angular momenta carried by each photon? What is the photon flux (the number of photons per time) of the laser light? (D) The laser beam is incident normally ( θ i = 0°) on the flat surface of a transparent glass block of refractive index n = 1.5, and only the 96% of the incident power enters into the block. Which of the above quantities in (A) and (B) change for the transmitted light inside the glass block and what are the new values for the changed quantities?

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Table. 1 Problem 1 (a and b) of Homework IV Physical Quantity Answer (Give the related equations and the values. ) Wavelength (Å, nm, μ m, mm) λ = 5.145 × 10 -7 m = 5145 Å = 514.5 nm = 0.5145 μ m = 0.0005145 mm Frequency ν = c λ = 3 10 8 m/s 5.145 10 -7 m = 5.831 × 10 14 Hz Period T = 1 ν = 1.715 × 10 -15 sec = 1.72 fsec Wavenumber
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HW3+Sol - Homework 3 with Solutions 1 An Ar laser emits 1...

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