Concept

Einstein coefficients

Related publications (42)

Effective-State Approach to 2nd-Order Perturbation-Theory

We show that the complete set of intermediate states in second-order perturbation expressions can be replaced by a finite number of states, provided the subspace they span contains one effective state, solution of an inhomogeneous equation. It is therefore ...

1992

A solid state laser at 4.96 mm: carbon monoxide in crystalline nitrogen

Majed Chergui

Laser generation at 4.96 mm was achieved on the v = 2 -> v = 1 transition of 13C18O dild. in N2 crystals. Conversion efficiencies of 10-20% and stimulated emission cross-sections of ~10-15-10-13 cm2 are reported. [on SciFinder (R)] ...

1991

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