scholarly journals Femtosecond laser-induced crystallization of amorphous Ga-Sb-Se films and coherent phonon dynamics

2012 ◽  
Vol 20 (17) ◽  
pp. 18585 ◽  
Author(s):  
Weiling Zhu ◽  
Yegang Lu ◽  
Simian Li ◽  
Zhitang Song ◽  
Tianshu Lai
Keyword(s):  
Femtosecond Laser ◽  
Coherent Phonon ◽  
Phonon Dynamics ◽  
Induced Crystallization

scholarly journals Coherent phonon dynamics in a c-plane sapphire crystal before and after intense femtosecond laser irradiation

2020 ◽  
Vol 28 (11) ◽  
pp. 16003
Author(s):  
Xin Zhao ◽  
Zhaogang Nie ◽  
Lin Ma ◽  
Fangteng Zhang ◽  
Mingming Hao ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Femtosecond Laser Irradiation ◽  
Sapphire Crystal ◽  
Coherent Phonon ◽  
Phonon Dynamics ◽  
Before And After

Near-infrared femtosecond laser-induced crystallization of amorphous silicon

2004 ◽  
Vol 85 (7) ◽  
pp. 1232-1234 ◽  
Author(s):  
Jia-Min Shieh ◽  
Zun-Hao Chen ◽  
Bau-Tong Dai ◽  
Yi-Chao Wang ◽  
Alexei Zaitsev ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Amorphous Silicon ◽  
Near Infrared ◽  
Induced Crystallization

Layer-Dependent Ultrafast Carrier and Coherent Phonon Dynamics in Black Phosphorus

Nano Letters ◽  
2018 ◽  
Vol 18 (5) ◽  
pp. 3053-3059 ◽  
Author(s):  
Xianchong Miao ◽  
Guowei Zhang ◽  
Fanjie Wang ◽  
Hugen Yan ◽  
Minbiao Ji
Keyword(s):  
Black Phosphorus ◽  
Coherent Phonon ◽  
Ultrafast Carrier ◽  
Phonon Dynamics

scholarly journals Space-Selective Control of Functional Crystals by Femtosecond Laser: A Comparison between SrO-TiO2-SiO2 and Li2O-Nb2O5-SiO2 Glasses

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 979
Author(s):  
Xuan He ◽  
Qiming Liu ◽  
Matthieu Lancry ◽  
François Brisset ◽  
Bertrand Poumellec
Keyword(s):  
Femtosecond Laser ◽  
Second Harmonic ◽  
Scanning Speed ◽  
High Energy ◽  
Femtosecond Laser Irradiation ◽  
Laser Polarization ◽  
Electron Backscattered Diffraction ◽  
Sio2 Glass ◽  
Significant Difference ◽  
Induced Crystallization

We report on space-selective crystallization of congruent and polar Sr2TiSi2O8 crystals in a stoichiometric SrO-TiO2-SiO2 glass induced by (1030 nm, 300 fs) femtosecond laser irradiation. This allows us to compare with non-congruent laser-induced crystallization of polar LiNbO3 in non-stoichiometric Li2O-Nb2O5-SiO2 glass and gain information on the mechanism of nanocrystals orientation with the laser polarization that we pointed out previously. Using scanning electron microscopy (SEM), second harmonic generation (SHG), and electron backscattered diffraction (EBSD), we studied the laser-induced crystallization according to the laser processing parameters (pulse energy, pulse repetition rate, scanning speed). We found (1) a domain where the laser track is filled with crystals not perfectly textured (low energy), (2) a domain where an amorphous volume remains surrounded by a crystallized shell (high energy). This arises from Sr out-diffusion and may give rise to the crystallization of both SrTiO3 and Sr2TiSi2O8 phases at low speed. In the one-phase domain (at higher speed), the possibility to elaborate a tube with a perfect Fresnoite texture is found. A significant difference in size and morphology whereas the crystallization threshold remains similar is discussed based on glass thermal properties. Contrarily to Li2O-Nb2O5-SiO2 (LNS) glass, no domain of oriented nanocrystallization controlled by the laser polarization has been found in SrO-TiO2-SiO2 (STS) glass, which is attributed to the larger crystallization speed in STS glass. No nanogratings have also been found that is likely due to the congruency of the glass.

scholarly journals Direct measurement of coherent phonon dynamics in solution-processed stibnite thin films

2014 ◽  
Vol 90 (3) ◽  
Author(s):  
Wee Kiang Chong ◽  
Guichuan Xing ◽  
Yun Liu ◽  
Ee Ling Gui ◽  
Qing Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Direct Measurement ◽  
Coherent Phonon ◽  
Solution Processed ◽  
Phonon Dynamics

Chirality Dependent Coherent Phonon Dynamics in Carbon Nanotube Solutions

2017 ◽  
Author(s):  
Ikufumi Katayama ◽  
Renjie Xu ◽  
Yasuo Minami ◽  
Kazuhiro Yanagi ◽  
Masahiro Kitajima ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Coherent Phonon ◽  
Phonon Dynamics
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