7.13. Consider the atomic system shown below being irradiated by an external wave tuned to the center of the 2 1 transition with 1 being the ground state. The wave pumps the atoms from 1 to 2 and also stimulates the atoms back to 1 from 2. In addition, the atoms in state 2 decay back to 1 by spontaneous emission and/or by other processes with a rate given by (T). The total density of atoms is [N]. Assume o 10-14 cm² (a) Formulate the rate equations for the two states in terms of the intensity of the external wave, the stimulated emission cross section, the frequency hv= E₂ E₁, T, and the degeneracies of the states (82, 81).

7.13. Consider the atomic system shown below being irradiated by an external wave tuned to the center of the 2 1 transition with 1 being the ground state. The wave pumps the atoms from 1 to 2 and also stimulates the atoms back to 1 from 2. In addition, the atoms in state 2 decay back to 1 by spontaneous emission and/or by other processes with a rate given by (T). The total density of atoms is [N]. Assume o 10-14 cm² (a) Formulate the rate equations for the two states in terms of the intensity of the external wave, the stimulated emission cross section, the frequency hv= E₂ E₁, T, and the degeneracies of the states (82, 81).

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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