Effects of excited-state absorption on two-photon absorbing materials

Journal Article · Mon Apr 10 00:00:00 EDT 2006 · Applied Optics

DOI:https://doi.org/10.1364/AO.45.0· OSTI ID:20779326

Yongwang, Gao; Potasek, Mary J

Many chromophores with a large two-photon absorptive cross section are hybrid materials where the two-photon absorption (TPA) is coupled to an excited-state absorption (ESA). We develop a numerical technique to investigate hybrid two-photon processes in nonlinear absorbers. Our numerical method compares well with published results. In addition to customary calculation of the transmission curve, we demonstrate the importance of the ESA following the TPA, which may cause significant temporal and radial distortion. We also show that improvements in the transmission can result in significant radial and temporal pulse distortion, which may actually reduce the material effect.

• OSTI ID: 20779326
• Journal Information: Applied Optics, Vol. 45, Issue 11; Other Information: DOI: 10.1364/AO.45.002521; (c) 2006 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
36 MATERIALS SCIENCE
ABSORPTION
CROSS SECTIONS
DIAGRAMS
EXCITED STATES
LASERS
LIGHT TRANSMISSION
MULTI-PHOTON PROCESSES
NONLINEAR OPTICS
PHOTONS
PHYSICAL RADIATION EFFECTS
PULSES