scholarly journals Waveguiding and nonlinear optical properties of three-dimensional waveguides in LiTaO3 written by high-repetition rate ultrafast laser

2008 ◽  
Vol 93 (11) ◽  
pp. 111106 ◽  
Author(s):  
Ben McMillen ◽  
Kevin P. Chen ◽  
Honglin An ◽  
Simon Fleming ◽  
Vincent Hartwell ◽  
...  
2013 ◽  
Vol 68 (12) ◽  
pp. 744-750 ◽  
Author(s):  
Muharrem Kirak ◽  
Sait Yilmaz

A theoretical study of the electronic properties of the ground state and excited states and the linear and the third-order nonlinear optical properties (i. e., absorption coefficients and refractive indices) in a spherical GaAs pseudodot system is reported. The variational procedure has been employed in determining sublevel energy eigenvalues and their wave functions within the effective mass approximation. Our results indicate that the chemical potential of the electron gas and the minimum value of the pseudoharmonic potential have a great influence on the electrical and optical properties of hydrogenic impurity states. Also, we have found that the magnitudes of the absorption coefficient and the refractive index change of the spherical quantum dot increase for transitions between higher levels.


2013 ◽  
Vol 114 (2) ◽  
pp. 625-629
Author(s):  
Tetsuya Shimogaki ◽  
Taihei Ofuji ◽  
Norihiro Tetsuyama ◽  
Kota Okazaki ◽  
Mitsuhiro Higashihata ◽  
...  

2008 ◽  
Vol 61 (20) ◽  
pp. 3189-3199 ◽  
Author(s):  
Zhao Rui Pan ◽  
You Cai Zhang ◽  
Ying Lin Song ◽  
Xin Zhuo ◽  
Yi Zhi Li ◽  
...  

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 583 ◽  
Author(s):  
Florin Jipa ◽  
Stefana Iosub ◽  
Bogdan Calin ◽  
Emanuel Axente ◽  
Felix Sima ◽  
...  

Glass is an alternative solution to polymer for the fabrication of three-dimensional (3D) microfluidic biochips. Femtosecond (fs) lasers are nowadays the most promising tools for transparent glass processing. Specifically, the multiphoton process induced by fs pulses enables fabrication of embedded 3D channels with high precision. The subtractive fabrication process creating 3D hollow structures in glass, known as fs laser-assisted etching (FLAE), is based on selective removal of the laser-modified regions by successive chemical etching in diluted hydrofluoric acid solutions. In this work we demonstrate the possibility to generate embedded hollow channels in photosensitive Foturan glass volume by high repetition rate picosecond (ps) laser-assisted etching (PLAE). In particular, the influence of the critical irradiation doses and etching rates are discussed in comparison of two different wavelengths of ultraviolet (355 nm) and visible (532 nm) ranges. Fast and controlled fabrication of a basic structure composed of an embedded micro-channel connected with two open reservoirs, commonly used in the biochip design, are achieved inside glass. Distinct advantages such as good aspect-ratio, reduced processing time for large areas, and lower fabrication cost are evidenced.


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