Femtosecond pulse evolution in GaAs crystal

2000 ◽  
Vol 87 (3) ◽  
pp. 1049-1053 ◽  
Author(s):  
J. Kumar ◽  
Pratima Sen
Keyword(s):  
Femtosecond Pulse ◽  
Gaas Crystal

Study of dislocation loops in Arsenic-Rich as-grown GaAs

1987 ◽  
Vol 45 ◽  
pp. 350-351
Author(s):  
Byung-Teak Lee
Keyword(s):  
Point Defects ◽  
Electronic Devices ◽  
Arsenic Concentration ◽  
Stoichiometric Compound ◽  
Dislocation Loops ◽  
Gaas Crystal ◽  
Ion Milling ◽  
Transmission Electron ◽  
Arsenic Source ◽  
High Arsenic

Grown-in dislocations in GaAs have been a major obstacle in utilizing this material for the potential electronic devices. Although it has been proposed in many reports that supersaturation of point defects can generate dislocation loops in growing crystals and can be a main formation mechanism of grown-in dislocations, there are very few reports on either the observation or the structural analysis of the stoichiometry-generated loops. In this work, dislocation loops in an arsenic-rich GaAs crystal have been studied by transmission electron microscopy.The single crystal with high arsenic concentration was grown using the Horizontal Bridgman method. The arsenic source temperature during the crystal growth was about 630°C whereas 617±1°C is normally believed to be optimum one to grow a stoichiometric compound. Samples with various orientations were prepared either by chemical thinning or ion milling and examined in both a JEOL JEM 200CX and a Siemens Elmiskop 102.

scholarly journals Femtosecond Pulse Temporal Overlap Estimation and Adjustment in SSFS-Based CARS System

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 131317-131325 ◽  
Author(s):  
Yongning Zhang ◽  
Junfeng Jiang ◽  
Shuang Wang ◽  
Kun Liu ◽  
Zhe Ma ◽  
...  
Keyword(s):  
Femtosecond Pulse ◽  
Temporal Overlap

scholarly journals Broadband and Tunable 920-nm Femtosecond Pulse Generated by an All-Fiber Er:Fiber Laser System

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 29660-29664
Author(s):  
Kai Qian ◽  
Hao Luo ◽  
Da Qiu ◽  
Shengli Pu ◽  
Wencai Yao
Keyword(s):  
Femtosecond Pulse ◽  
Laser System

Femtosecond pulse duration as a tool for controlling high fluence of laser filament in air

2009 ◽  
Author(s):  
Elena P. Silaeva ◽  
Oleg V. Tverskoy ◽  
Valerii P. Kandidov
Keyword(s):  
Pulse Duration ◽  
Femtosecond Pulse ◽  
High Fluence

High average power coherent femtosecond pulse combining system based on an all fiber active control method

2018 ◽  
Vol 15 (7) ◽  
pp. 075101 ◽  
Author(s):  
H L Yu ◽  
Z X Zhang ◽  
X L Wang ◽  
R T Su ◽  
H W Zhang ◽  
...  
Keyword(s):  
Active Control ◽  
Femtosecond Pulse ◽  
Control Method ◽  
Average Power ◽  
High Average Power ◽  
Active Control Method

65-femtosecond pulse generation from a synchronously pumped dye laser without a colliding-pulse mode-locking technique

1987 ◽  
Vol 12 (9) ◽  
pp. 681 ◽  
Author(s):  
Masataka Nakazawa ◽  
Takashi Nakashima ◽  
Hirokazu Kubota ◽  
Shigeyuki Seikai
Keyword(s):  
Femtosecond Pulse ◽  
Mode Locking ◽  
Pulse Mode ◽  
Pulse Generation ◽  
Dye Laser ◽  
Synchronously Pumped

Femtosecond pulse-shaping scheme for cross-phase modulation in single-mode optical fibers

1994 ◽  
Vol 11 (8) ◽  
pp. 1451 ◽  
Author(s):  
G. R. Boyer ◽  
M. A. Franco ◽  
M. Lachgar ◽  
B. Grèzes-Besset ◽  
A. Alexandrou
Keyword(s):  
Optical Fibers ◽  
Phase Modulation ◽  
Pulse Shaping ◽  
Femtosecond Pulse ◽  
Single Mode ◽  
Cross Phase Modulation
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