搜索结果: 1-13 共查到“光学工程 Picosecond”相关记录13条 . 查询时间(0.065 秒)
Nonlinear Optical Studies of DNA Doped Rhodamine 6G-PVA Films Using Picosecond Pulses
DNA Thin Films Z-Scan Picosecond Two-Photon Absorption
2012/9/28
We present our results from the measurements of third-order optical nonlinearity in DNA doped Rhodamine 6G/PVA films achieved through Z-scan measurements using ~2 picosecond (ps) pulses at a wavelengt...
Intensity Dependent Nonlinear Absorption in Direct and Indirect Band Gap Crystals under Nano and Picosecond Z-Scan
Direct and Indirect Band Gap Crystals Two Photon Absorption Three Photon Absorption Saturated Absorption
2012/6/28
The nonlinear absorption properties of direct (GaN) and indirect (CdI2) band gap crystals have been studied by using an open aperture Z-scan technique under fundamental (1064 nm) and frequency doubled...
XPM-Induced Spectral Distortion in High Efficiency,Picosecond,Fiber Optical Parametric Oscillators
XPM-Induced Spectral Distortion High Efficiency Fiber Optical Parametric Oscillators
2011/5/15
We describe a 230nm tunable fiber optical parametric oscillator (FOPO) using an 8ps pump laser. The FOPO generates 2-4ps pulses with conversion efficiency as high as 20%. The output spectrum exhibits ...
Picosecond Fiber Optical Parametric Oscillator with 500 nm Tuning Range Using Dispersion-Shifted Fiber
Nonlinear Optics fibers Nonlinear optics four-wave mixing
2010/6/9
We demonstrate a picosecond fiber optical parametric oscillator with a tuning range of 500 nm pumped by a relatively low-cost intensity-modulated pump. Pulses with pulsewidth from 7 ps to 17 ps are ge...
Time lens for Sub-picosecond Optical Pulse Measurement on a Chip
Glass waveguides Nonlinear optics four-wave mixing Nonlinear optical materials Integrated optics materials
2010/6/8
We demonstrated subpicosecond temporal optical imaging based on four wave mixing temporal to frequency domain conversion in a CMOS compatible, high index glass waveguide.
Demonstration of a Photonic Integrator-Based Loadable and Erasable Optical Memory Unit with Picosecond Switching Times
Photonic Integrator-Based Optical Memory Picosecond
2009/7/16
A novel ultrahigh-speed optical memory concept is demonstrated using an FBG-based photonic integrator with ultra-large memory storage-to-switching time ratio (>300). An all-optical memory unit with un...
Picosecond and Sub-Picosecond Flat-Top Pulse Shaping Using Abrupt Taper Interferometers
Abrupt taper interferometer flat-top pulse generation pulse shaping
2009/6/24
A picosecond flat-top pulse shaper using an abrupt taper interferometer is proposed and experimentally demonstrated. A theoretical model based on coupled mode equations is also derived to simulate the...
Excitataion Energy Transfer Processes and Mechanisms in Photosynthetic Antenna System “Analyses by Femtosecond and Picosecond Time-Resolved Fluorescence Spectroscopy”
Excitation energy transfer Photosynthesis Antenna system
2009/6/9
Excitation energy transfer pathways and mechanisms in the antenna systems of oxygenic photosynthetic organisms were discussed from the viewpoint of methodology of analyses. Time-resolved fluorescence ...
17 ns Tunable Delay for Picosecond Pulses through Simultaneous and Independent Control of Delay and Dispersion Using Cascaded Parametric Processes
Picosecond Pulses Independent Control Cascaded Parametric Processes
2008/8/6
Using cascaded parametric processes, we show that delay and dispersion can be continuously tuned in a simultaneous and independent manner, while the third-order dispersion is suppressed for wideband o...
Transfer of a 1486.3 MHz frequency standard over installed fibre links for local oscillator distribution with a stability of 1 picosecond
standard over installed fibre links oscillator distribution stability
2008/8/4
Details of a local oscillator distribution system over 110 km of installed fibre with an r.m.s. stability of, 1 ps in 1 second, 2 ps in 1 minute and 4 ps in 10 minutes.
Broadband and Enhanced Picosecond Cross-phase Modulation in InGaAs /AlAsSb Quantum Well Waveguides G.W. Cong, R. Akimoto, M. Nagase, T. Mozume, T. Hasama, and H. Is
Broadband Enhanced Picosecond Cross-phase Modulation Quantum Well Waveguides
2008/8/3
Ultrafast cross-phase modulation induced by intersubband excitation was ~2-3times enhanced when tuning probe wavelength from 1640 to 1360nm, showing a ~300nm broadband. Interband dispersion model expl...
Direct amplification of picosecond pulses in erbium fibre to 127 kW peak power without pulse break-up
Direct amplification picosecond pulses erbium fibre
2008/7/30
Picosecond pulses are directly amplified in a core pumped erbium fibre with effective area 1170- μ m 2 to record diffraction limited 67- nJ pulse energy and 127- kW peak power without pulse break-up.
Recent progress in ultrashort-pulse high-power laser technology has resulted in the production of extremely high light intensities approaching 1020 W/cm2. The great non-linear forces generated by the ...