Browsing by Author "Peng, Lung-Han"

Now showing 1 - 5 of 5

Generation of multi-octave-spanning laser harmonics by cascaded quasi-phase matching in a monolithic ferroelectric crystal
(2009-11-15)
Hsu, Wei-Chun
;
Lai, Ying-Yao
;
Lai, Chien-Jen
;
Peng, Lung-Han
;
Pan, Ci-Ling
We report the generation of the second to the sixth harmonics of a fundamental frequency covering two and a half octaves in a multiply-periodically poled lithium tantalate crystal by cascaded quasi-phase-matched frequency mixing. A frequency comb that is composed of these harmonics will permit the synthesis of a train of periodic subcycle subfemtosecond pulses in a compact setting. (C) 2009 Optical Society of America
Generation of Octave-Spanning Multiple Harmonics for Ultrafast Waveform Synthesis
(2009)
Hsu, Wei-Chun
;
Hsieh, Zhi-Ming
;
Lai, Ying-Yao
;
Lai, Chien-Jen
;
Chen, Wei-Ting
Up to seven laser harmonics covering more than two octaves in frequency have been generated efficiently in a single PPLT crystal. permitting the syntehsis of 1.5 femtosecond pulses in a stable and compact setting
Optical Interference in Nonlinear Photonic Crystals
(2008)
Lai, Chien-Jen
;
Peng, Lung-Han
;
Kung, A. H.
;
光電工程學系
;
Department of Photonics
We report a generalized quantitative analysis of the origin of optical interference in two-dimensional nonlinear photonic crystals. The results are verified by a second harmonic generation experiment in a 2-D periodically-poled LiNbO3 crystal. (c) 2008 Optical Society of America
Synthesis and Measurement of Ultrafast Waveforms from Five Discrete Optical Harmonics
(2011-03-04)
Chan, Han-Sung
;
Hsieh, Zhi-Ming
;
Liang, Wei-Hong
;
Kung, A. H.
;
Lee, Chao-Kuei
Achieving the control of light fields in a manner similar in sophistication to the control of electromagnetic fields in the microwave and radiofrequency regimes has been a major challenge in optical physics research. We manipulated the phase and amplitude of five discrete harmonics spanning the blue to mid-infrared frequencies to produce instantaneous optical fields in the shape of square, sawtooth, and subcycle sine and cosine pulses at a repetition rate of 125 terahertz. Furthermore, we developed an all-optical shaper-assisted linear cross-correlation technique to retrieve these fields and thereby verified their shapes and confirmed the critical role of carrier-envelope phase in Fourier synthesis of optical waveforms.
Synthesis of Attosecond Waveforms Using Raman-generated Frequency Combs
(2010)
Chan, Han-Sung
;
Hsieh, Zhi-Ming
;
Liang, Wei-Hong
;
Kung, A. H.
;
Lee, Chao-Kuei
Attosecond optical waveforms of arbitrary shape are synthesized and verified using a Raman-generated comb of frequencies that have a controlled and stable carrier-envelope phase. (C)2010 Optical Society of America