Generation of sub-50 fs pulses from a high-power Yb-doped fiber amplifier

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• Optics Letters, Vol. 34 Issue 22, pp.3469-3471 (2009)
• Deng, Yujun; Chien, Ching-Yuan; Fidric, Bernard G; Kafka, James D
• We demonstrate the generation of 48 fs pulses with 18 W average power and 226 nJ of pulse energy from a Yb-doped fiber amplifier. The system uses a simple stretcher-free single-stage...

Mode-locked picosecond pulse generation from an octave-spanning supercontinuum

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• Optics Express, Vol. 17 Issue 23, pp.20833-20839 (2009)
• Kielpinski, D; Pullen, M G; Canning, J; Stevenson, M; Westbrook, P S; Feder, K S
• We generate mode-locked picosecond pulses near 1110 nm by spectrally slicing and reamplifying an octave-spanning supercontinuum source pumped at 1550 nm. The 1110 nm pulses are near...

Elongation of femtosecond filament by molecular alignment in air

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• Optics Express, Vol. 17 Issue 23, pp.21060-21065 (2009)
• Cai, Hua; Wu, Jian; Li, Hao; Bai, Xueshi; Zeng, Heping
• We study the influence of the molecular alignment on the plasma channel length of femtosecond filament at 800 nm in air. The filament length is observed to be nearly doubled when the...

Delay control in attosecond pump-probe experiments

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• Optics Express, Vol. 17 Issue 24, pp.21459-21464 (2009)
• Chini, Michael; Mashiko, Hiroki; Wang, He; Chen, Shouyuan; Yun, Chenxia; Scott, Shane; Gilbertson, Steve; Chang, Zenghu
• The time delay between the pump and probe pulses in attosecond time-resolved experiments, such as attosecond streaking, is commonly introduced by splitting and recombining the two...

Stable UV to IR supercontinuum generation in calcium fluoride with conserved circular polarization states

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• Optics Express, Vol. 17 Issue 24, pp.21488-21496 (2009)
• Johnson, Philip J M; Prokhorenko, Valentyn I; Miller, R J Dwayne
• The supercontinuum generated with a linearly polarized near-IR (775nm) pump in rotated calcium fluoride is shown to have intrinsic intensity and polarization modulations. To mask the...

Dependence of dynamic Lorentz frequency shift on carrier-envelope phase and including local field effects

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• Optics Express, Vol. 17 Issue 24, pp.21754-21761 (2009)
• Zhang, Chaojin; Yang, Weifeng; Song, Xiaohong; Xu, Zhizhan
• We investigate the local field effects in a ZnO dense medium. Our results show due to the local-field effects, the Lorentz shifts can be found in the reflected spectra driven by the...