scholarly journals Nonlinear Absorptions of CdSeTe Quantum Dots under Ultrafast Laser Radiation

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Zhijun Chai ◽  
Yachen Gao ◽  
Degui Kong ◽  
Wenzhi Wu
Keyword(s):  
Quantum Dots ◽  
Repetition Rate ◽  
Inductively Coupled Plasma ◽  
High Repetition Rate ◽  
Photon Absorption ◽  
Heat Accumulation ◽  
Inductively Coupled ◽  
High Repetition ◽  
Plasma Mass Spectrometry ◽  
Nonlinear Absorptions

The oil-soluble alloyed CdSeTe quantum dots (QDs) are prepared by the electrostatic method. The basic properties of synthesized CdSeTe QDs are characterized by UV-Vis absorption spectroscopy, photoluminescence spectroscopy, inductively coupled plasma mass spectrometry, and transmission electron microscope. The off-resonant nonlinear optical properties of CdSeTe QDs are studied by femtosecondZ-scan at 1 kHz (low-repetition rate) and 84 MHz (high-repetition rate). Nonlinear absorption coefficients are calculated under different femtosecond laser excitations. Due to the long luminescent lifetime of CdSeTe QDs, under the conditions of high-repetition rate, for open-aperture curve, heat accumulation and bleaching of ground state are responsible for the decrease of two-photon absorption (TPA) coefficient.

scholarly journals High repetition rate femtosecond laser heat accumulation and ablation thresholds in cobalt-binder and binderless tungsten carbides

2019 ◽  
Vol 266 ◽  
pp. 388-396
Author(s):  
Kendrick Mensink ◽  
Elías H. Penilla ◽  
Pablo Martínez-Torres ◽  
Natanael Cuando-Espitia ◽  
Suveen Mathaudhu ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Repetition Rate ◽  
High Repetition Rate ◽  
Tungsten Carbides ◽  
Heat Accumulation ◽  
High Repetition ◽  
Laser Heat

scholarly journals 1.55 µm InAs/GaAs Quantum Dots and High Repetition Rate Quantum Dot SESAM Mode-locked Laser

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Z. Y. Zhang ◽  
A. E. H. Oehler ◽  
B. Resan ◽  
S. Kurmulis ◽  
K. J. Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Repetition Rate ◽  
High Repetition Rate ◽  
High Repetition ◽  
Mode Locked Laser
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