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A WDM-PON with an 80 Gb/s capacity based on wavelength-locked Fabry-Perot laser diode
Mon, 2010-08-16 02:00 — GuestHoon-Keun Lee, Ho-Sung Cho, Joon-Young Kim, Chang-Hee Lee
We investigate a high capacity WDM-PON based on wavelength-locked Fabry-Perot laser diodes. A color-free transmission of 2.5 Gb/s per channel is achieved with a polarization independent F-P LD and a decision threshold control circuit at the receiver. Then, we demonstrate an 80 Gb/s capacity (2.5 ... [Opt. Express 18, 18077-18085 (2010)]
Temporally focused femtosecond laser pulses for low numerical aperture micromachining through optically transparent materials
Mon, 2010-08-16 02:00 — GuestDawn N. Vitek, Daniel E. Adams, Adrea Johnson, Philbert S. Tsai, Sterling Backus, Charles G. Durfee, David Kleinfeld, Jeffrey A. Squier
Temporal focusing of spatially chirped femtosecond laser pulses overcomes previous limitations for ablating high aspect ratio features with low numerical aperture (NA) beams. Simultaneous spatial and temporal focusing reduces nonlinear interactions, such as self-focusing, prior to the focal plane ... [Opt. Express 18, 18086-18094 (2010)]
Femtosecond laser-assisted selective infiltration of microstructured optical fibers
Mon, 2010-08-16 02:00 — GuestYing Wang, C. R. Liao, D. N. Wang
A new method of selectively infiltrating microstructured optical fibers with the assistance of femtosecond laser micromachining is presented. With this technique, any type of air-holes in the cross-section of the microstructured optical fibers can be selectively infiltrated with liquids, which ... [Opt. Express 18, 18056-18060 (2010)]
40-80-160 GHz tunable mode-locked semiconductor fiber laser incorporating a nonlinear optical loop mirror
Mon, 2010-08-16 02:00 — GuestTommy Cai, Lawrence R. Chen
We demonstrate a tunable mode-locked semiconductor fiber laser incorporating a nonlinear optical loop mirror and synchronized to an external optical signal at 40 GHz, 80 GHz, and 160 GHz. The laser generates sech^2 pulses as short as 2.0 ps, 1.7 ps, and 1.3 ps at 40 GHz, 80 GHz, and 160 GHz, ... [Opt. Express 18, 18113-18118 (2010)]
Diode pumped passively mode-locked Yb:SSO laser with 2. 3ps duration
Mon, 2010-08-16 02:00 — GuestJinfeng Li, Xiaoyan Liang, Jinping He, Lihe Zheng, Zhiwei Zhao, Jun Xu
This paper reports on a diode-pumped picosecond passively mode-locked Yb:SSO laser. Pulses as short as 2.3 ps with a repetition rate of 53 MHz were generated, without extra negative dispersion elements. The output power achieved 1.87 W at a pump power of 11.5 W. Continuous-wave operation and ... [Opt. Express 18, 18354-18359 (2010)]
Pulse width tunable passively mode-locked Nd:YVO_4 laser based on hybrid laser gain medium locations
Mon, 2010-08-16 02:00 — GuestHua Lin, Yen-Yin Lin, Yuan-Yao Lin, Jinping He, Jinfeng Li, Xiaoyan Liang
A pulse width tunable passively mode-locked laser with a wavelength of 1,064 nm and two Nd:YVO_4 crystals located in asymmetric positions is demonstrated. By adjusting the pump power of the crystals, the pulse width can be continuously tuned from 8.8 to 20.3 ps at a stable mode-locked repetition ... [Opt. Express 18, 17584-17590 (2010)]
Laser-induced phase transitions of Ge_2Sb_2Te_5 thin films used in optical and electronic data storage and in thermal lithography
Mon, 2010-08-16 02:00 — GuestCheng Hung Chu, Chiun Da Shiue, Hsuen Wei Cheng, Ming Lun Tseng, Hai-Pang Chiang, Masud Mansuripur, Din Ping Tsai
Amorphous thin films of Ge_2Sb_2Te_5, sputter-deposited on a ZnS-SiO_2 dielectric layer, are investigated for the purpose of understanding the structural phase-transitions that occur under the influence of tightly-focused laser beams. Selective chemical etching of recorded marks in conjunction with ... [Opt. Express 18, 18383-18393 (2010)]
Tunable directly modulated fiber ring laser using a reflective semiconductor optical amplifier for WDM access networks
Mon, 2010-08-16 02:00 — GuestZih-Rong Lin, Cheng-Kuang Liu, Yu-Jhu Jhang, Gerd Keiser
We have proposed a stable, wideband, and tunable directly modulated fiber ring laser (TDMFRL) by using a reflective semiconductor optical amplifier (RSOA) and an optical tunable filter (OTF). For use in a bidirectional access network, the TDMFRL not only generates downstream data traffic but also ... [Opt. Express 18, 17610-17619 (2010)]
Synthesis of ZnO nanoflowers and their wettabilities and photocatalytic properties
Mon, 2010-08-16 02:00 — GuestXiaodong Guo, Quanzhong Zhao, Ruxin Li, Huaihai Pan, Xiaoyang Guo, Anyuan Yin, Weilin Dai
By combing laser direct writing and hydrothermal growth, we demonstrate the growth of three-dimensional flowerlike ZnO nanostructures from aqueous solution. Our approach offers synthetic flexibility in controlling film architecture, coating texture and crystallite size. The wettability is studied ... [Opt. Express 18, 18401-18406 (2010)]
Time-resolved pump-probe experiments at the LCLS
Mon, 2010-08-16 02:00 — GuestJames M. Glownia, J. Cryan, J. Andreasson, A. Belkacem, N. Berrah, C. I. Blaga, C. Bostedt, J. Bozek, L. F. DiMauro, L. Fang, J. Frisch, O. Gessner, M. Gühr, J. Hajdu, M. P. Hertlein, M. Hoener, G. Huang, O. Kornilov, J. P. Marangos, A. M. March, B. K. McFarland, H. Merdji, V. S. Petrovic, C. Raman, D. Ray, D. A. Reis, M. Trigo, J. L. White, W. White, R. Wilcox, L. Young, R. N. Coffee, P. H. Bucksbaum
The first time-resolved x-ray/optical pump-probe experiments at the SLAC Linac Coherent Light Source (LCLS) used a combination of feedback methods and post-analysis binning techniques to synchronize an ultrafast optical laser to the linac-based x-ray laser. Transient molecular nitrogen alignment ... [Opt. Express 18, 17620-17630 (2010)]
