Anti-Stokes fluorescence of oxazine 1 in solution with continuous wave laser excitation at 785 nm

Microscopic spectral properties of a laser dye oxazine 1 in ethanol were characterized in an effort to understand anti-Stokes fluorescence upon one-photon absorption of near infrared continuous wave laser. Comparison between three excitation modes, 808 nm subpicosecond pulsed laser, 785 nm continuous wave laser, and 488 nm continuous wave laser enabled us to estimate absolute one-photon absorption-based excitation probability of singlet excited state of oxazine 1 in ethanol at 785 and 808 nm. (C) 2013 Elsevier B.V. All rights reserved.