Off-Axial mode selection in solid-state lasers due to nonuniformities |
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| Authors: | Varma C. |
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| Affiliation: | Bell Telephone Laboratories, Inc., Murray Hill, NJ, USA; |
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| Abstract: | It is shown that the nonuniformity of excitation produced in circular cross-section solid-state lasers due to the focusing of pump power leads to a coupling of certain modes and reduction in their threshold of oscillation. These modes correspond in plane-wave representation to simple closed paths in the cavity. The off-axial radiation observed in the form of rings by Collins and Giordmaine and others is explained on the basis of the theory. |
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