title: Wavelength dependence of two photon and free carrier absorptions in InP.
abstract: Nonlinear absorption at 1.064 and 1.535 microm wavelengths by two photon and free carrier absorption processes in undoped and Fe doped InP has been investigated. Using picosecond and nanosecond duration lasers, a self-consistent set of the two photon and free carrier absorption coefficients are experimentally obtained through nonlinear transmission measurements for the first time. Reduced carrier recombination lifetime caused a decrease in nonlinear absorption of nanosecond duration laser pulses in Fe doped samples.
authors.affiliation: Air Force Research Lab, Material and Manufacturing Directorate, Wright Paterson Air Force Base, Ohio 45433, USA. leo.gonzalez@gdit.com
authors.forename: Leonel P
authors.initials: LP
authors.lastname: Gonzalez
authors.forename: Joel M
authors.initials: JM
authors.lastname: Murray
authors.forename: Srinivasan
authors.initials: S
authors.lastname: Krishnamurthy
authors.forename: Shekhar
authors.initials: S
authors.lastname: Guha
mesh_terms: D000327:Adsorption; D007204:Indium / Q000737:chemistry*; D008027:Light; D010720:Phosphines / Q000737:chemistry*; D017785:Photons; D012542:Scattering, Radiation
chemical_list: D010720:Phosphines; D007204:Indium; C090882:indium phosphide