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Lasers without inversion: Interference of lifetime-broadened resonances

Technical Report ·
OSTI ID:5486400
If two upper levels of a four-level laser system are purely lifetime broadened, and decay to an identical continuum, there will be an interference in the absorption profile of lower-level atoms; this interference is absent from the stimulated-emission profile of the upper-level atoms. Laser amplification may then be obtained without inversion. Examples include interfering autoionizing levels, and tunneling systems.
Research Organization:
Stanford Univ., CA (USA). Edward L. Ginzton Lab.
OSTI ID:
5486400
Report Number(s):
AD-A-210947/8/XAB
Country of Publication:
United States
Language:
English

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