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91.
Myaing MT Ye JY Norris TB Thomas T Baker JR Wadsworth WJ Bouwmans G Knight JC Russell PS 《Optics letters》2003,28(14):1224-1226
A double-clad photonic crystal fiber was used to improve detection efficiency over a standard single-mode fiber in a two-photon fluorescence detection scheme in which the dye was excited and the fluorescence was detected back through the same fiber. 相似文献
92.
A grating is recorded on a photo-resist coated specimen and re-illuminated with the interference pattern used to form it. ‘Live’ fringes corresponding to displacements can then be observed as the specimen is loaded. 相似文献
93.
Holzwarth R Udem T Hansch TW Knight JC Wadsworth WJ Russell PS 《Physical review letters》2000,85(11):2264-2267
We have used the frequency comb generated by a femtosecond mode-locked laser and broadened to more than an optical octave in a photonic crystal fiber to realize a frequency chain that links a 10 MHz radio frequency reference phase-coherently in one step to the optical region. By comparison with a similar frequency chain we set an upper limit for the uncertainty of this new approach to 5. 1x10(-16). This opens the door for measurement and synthesis of virtually any optical frequency and is ready to revolutionize frequency metrology. 相似文献
94.
Brick DH Widgoff M Beilliere P Lutz P Narjoux JL Gelfand N Alyea ED Bloomer M Bober J Busza W Cole B Frank TA Fuess TA Grodzins L Hafen ES Haridas P Huang D Huang HZ Hulsizer R Kistiakowsky V Ledoux RJ Milstene C Noguchi S Oh SH Pless IA Steadman S Stoughton TB Suchorebrow V Tether S Trepagnier PC Wadsworth BF Wu Y Yamamoto RK Cohn HO Calligarich E Corti G Dolfini R Gianini G Introzzi G Ratti S Badiak M DiMarco R Jacques PF Kalelkar M Plano RJ Stamer PE Brucker EB Koller EL Alexander G 《Physical review D: Particles and fields》1992,45(3):734-742
95.
White-light supercontinuum generation with 60-ps pump pulses in a photonic crystal fiber 总被引:17,自引:0,他引:17
Coen S Chau AH Leonhardt R Harvey JD Knight JC Wadsworth WJ Russell PS 《Optics letters》2001,26(17):1356-1358
The generation of a spatially single-mode white-light supercontinuum has been observed in a photonic crystal fiber pumped with 60-ps pulses of subkilowatt peak power. The spectral broadening is identified as being due to the combined action of stimulated Raman scattering and parametric four-wave-mixing generation, with a negligible contribution from the self-phase modulation of the pump pulses. The experimental results are in good agreement with detailed numerical simulations. These findings demonstrate that ultrafast femtosecond pulses are not needed for efficient supercontinuum generation in photonic crystal fibers. 相似文献
96.
Adrian R. Wadsworth 《代数通讯》2013,41(8):863-872
97.
98.
Extremes - Classical models for multivariate or spatial extremes are mainly based upon the asymptotically justified max-stable or generalized Pareto processes. These models are suitable when... 相似文献
99.
Ding W Staines OK Hobbs GD Gorbach AV de Nobriga C Wadsworth WJ Knight JC Skryabin DV Strain MJ Sorel M De La Rue RM 《Optics letters》2012,37(4):668-670
We report frequency conversion experiments in silicon-on-insulator (SOI) directional couplers. We demonstrate that the evanescent coupling between two subwavelength SOI waveguides is strongly dispersive and significantly modifies modulational instability (MI) spectra through the coupling induced group velocity dispersion (GVD). As the separation between two 380-nm-wide silicon photonic wires decreases, the increasing dispersion of the coupling makes the GVD in the symmetric supermode more normal and suppresses the bandwidth of the MI gain observed for larger separations. 相似文献
100.