Ql- A Nd:YAG rod, 6 mm in diameter, 7.5 cm long, with 1 atom.% Nd, is cw pumped by a high pressure Kr lamp in a close coupled diffusively reflecting pumping chamber. The energy separation between the upper laser level and the ground level corresponds to a wavelength of 940 nm. The measured threshold pump power when the rod is inserted in some given laser cavity is P = 2 kW. Assuming, for this pump configuration, that the rod is uniformly pumped with an overall pump efficiency of n, = 4.5%, calculate the corresponding critical pump rate.

Ql- A Nd:YAG rod, 6 mm in diameter, 7.5 cm long, with 1 atom.% Nd, is cw pumped by a high pressure Kr lamp in a close coupled diffusively reflecting pumping chamber. The energy separation between the upper laser level and the ground level corresponds to a wavelength of 940 nm. The measured threshold pump power when the rod is inserted in some given laser cavity is P = 2 kW. Assuming, for this pump configuration, that the rod is uniformly pumped with an overall pump efficiency of n, = 4.5%, calculate the corresponding critical pump rate.

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

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Ql- A Nd:YAG rod, 6 mm in diameter, 7.5 cm long, with 1 atom.% Nd, is cw pumped by
a high pressure Kr lamp in a close coupled diffusively reflecting pumping chamber. The
energy separation between the upper laser level and the ground level corresponds to a
wavelength of 940 nm. The measured threshold pump power when the rod is inserted in
some given laser cavity is P = 2 kW. Assuming, for this pump configuration, that the rod
is uniformly pumped with an overall pump efficiency of n, = 4.5%, calculate the
corresponding critical pump rate.

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