Relaxation behavior of nonlinear optical response in borate glasses containing gold nanoparticles

The relaxation time of nonlinear optical response has been obtained by femtosecond pump–probe measurements for borate glasses containing gold nanoparticles prepared by conventional melt-quenching and heat treatment techniques. Size effects of gold nanoparticles on the relaxation process were investigated. The relaxation time of a fast relaxation component increases with a decrease of the particle radius. The tail of the decay curve due to a slow relaxation component increases with an increase of the particle size. These results indicate that the particle size is an important factor for relaxation processes. In addition, the tail component is very small and is not affected by the pump intensity. This shows that the borate glass matrix has superior properties in the slow relaxation process.

[1]  Jeffrey Bokor,et al.  Direct measurement of nonequilibrium electron-energy distributions in subpicosecond laser-heated gold films , 1992 .

[2]  A. Ikushima,et al.  Optical nonlinearities of a high concentration of small metal particles dispersed in glass: copper and silver particles , 1994 .

[3]  Kohei Kadono,et al.  GOLD NANOPARTICLES ION IMPLANTED IN GLASS WITH ENHANCED NONLINEAR OPTICAL PROPERTIES , 1994 .

[4]  Suárez,et al.  Dynamics and transport of electronic carriers in thin gold films. , 1995, Physical review letters.

[5]  Francesco Gonella,et al.  Detection and size determination of Ag nanoclusters in ion‐exchanged soda‐lime glasses by waveguided Raman spectroscopy , 1996 .

[6]  François Hache,et al.  The optical kerr effect in small metal particles and metal colloids: The case of gold , 1988 .

[7]  A. Berger,et al.  Formation and optical properties of prolate silver particles in glasses , 1993 .

[8]  S. Thiel,et al.  Synthesis of nanosized silver particles in ion-exchanged glass by electron beam irradiation , 1997 .

[9]  R. Ruppin.  Optical absorption of copper colloids in photochromic glasses , 1986 .

[10]  H. Schmidt,et al.  Optically Induced Damping Of The Surface Plasmon Resonance In Gold Colloids , 1997, Quantum Electronics and Laser Science Conference.

[11]  Kazuyuki Hirao,et al.  Ultrafast dynamics of nonequilibrium electrons in a gold nanoparticle system , 1998 .

[12]  W. Halperin,et al.  Quantum size effects in metal particles , 1986 .

[13]  H. V. Hulst.  Light Scattering by Small Particles , 1957 .

[14]  Paul R. Ashley,et al.  Degenerate four-wave mixing in colloidal gold as a function of particle size , 1990 .

[15]  I. Tanahashi,et al.  Effects of heat treatment on Ag particle growth and optical properties in Ag/SiO_2 glass composite thin films , 1995 .

[16]  Masaru Yoshida,et al.  Preparation and Nonlinear Optical Properties of Ag/SiO2 Glass Composite Thin Films , 1994 .

[17]  N. Kitazawa,et al.  Effect of Na2O Addition to Ag2O-Doped Phosphate Glasses on Enhancement of Silver Particle Precipitation by Low-Energy Ion Irradiation , 1996 .

[18]  Arao Nakamura,et al.  Subpicosecond time response of third‐order optical nonlinearity of small copper particles in glass , 1994 .

[19]  Merle,et al.  Electron dynamics in copper metallic nanoparticles probed with femtosecond optical pulses. , 1995, Physical review letters.

[20]  Satoshi Sasaki,et al.  Optical nonlinearities of Au/SiO2 composite thin films prepared by a sputtering method , 1996 .

[21]  P. Buffat,et al.  Size effect on the melting temperature of gold particles , 1976 .

[22]  C. L. Tien,et al.  Size Effects on Nonequilibrium Laser Heating of Metal Films , 1993 .