Gain without inversion in a V-type system with low coherence decay rate for the upper levels
Dipankar Bhattacharyya, Biswajit Ray, Pradip N. Ghosh
Abstract
Inversionless gain is observed in a V-type inhomogeneously broadened system without introducing any incoherent pumping and only by changing the collisional dephasing decay rate. In this system sub-Doppler linewidth is achieved with off-resonance pump detuning.
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