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Received 29 October 1998; revised manuscript received 12 February 1999. We study lasing without inversion in a Doppler-broadened V-type three-level system ...
PHYSICAL REVIEW A

VOLUME 60, NUMBER 1

JULY 1999

Lasing without inversion with frequency up-conversion in a Doppler-broadened V-type three-level system V. Ahufinger, J. Mompart, and R. Corbala´n* Departament de Fı´sica, Universitat Auto`noma de Barcelona, E-08193 Bellaterra, Spain ~Received 29 October 1998; revised manuscript received 12 February 1999! We study lasing without inversion in a Doppler-broadened V-type three-level system in the frequency up-conversion regime. We show that the ratio R[ v l / v d of generated laser frequency to driving laser frequency that can be achieved using a vapor cell is modest (R

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