Physical Review Letters
Infrared Transient Antihole Burning in the 1 Å 2 Vibrational Transition of C12 O17 in Solid N2 : Evidence for Energy-Dependent Spectral Transfer
M. Harig, Renée Charneau, Henri Dubost
Abstract
The population hole burned within the inhomogeneously broadened ir fundamental absorption band of $^{12}\mathrm{C}$$^{17}\mathrm{O}$ in solid ${\mathrm{N}}_{2}$ by a narrow-band pulsed laser is detected as an antihole in the transient absorption of a tunable cw probe beam whose frequency is swept through the $v=1\ensuremath{\rightarrow}v=2$ resonance. The time development of the transient profile demonstrates that spectral diffusion is governed by an energy-dependent process, contrary to what has been observed in many disordered systems.