Problem 63. 64 Martian CO, laser. Where sunlight shines on the atmosphere E = 0.289 eV of Mars, carbon dioxide mole- cules at an altitude of about 75 km undergo natural laser action. The energy levels involved in the action are shown in Fig. 40-26; population inversion occurs be- tween energy levels E, and E. (a) What wavelength of sunlight E = 0.165 ev E =0 excites the molecules in the las- Figure 40-26 Problem 64. ing action? (b) At what wave- length does lasing occur? (c) In what region of the electromag- netic spectrum do the excitation and lasing wavelengths lie?

Problem 63. 64 Martian CO, laser. Where sunlight shines on the atmosphere E = 0.289 eV of Mars, carbon dioxide mole- cules at an altitude of about 75 km undergo natural laser action. The energy levels involved in the action are shown in Fig. 40-26; population inversion occurs be- tween energy levels E, and E. (a) What wavelength of sunlight E = 0.165 ev E =0 excites the molecules in the las- Figure 40-26 Problem 64. ing action? (b) At what wave- length does lasing occur? (c) In what region of the electromag- netic spectrum do the excitation and lasing wavelengths lie?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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