Propagation of ultrashort pulses through transparent dielectrics in nonlinear regime

2003 ◽  
Author(s):  
Czeslaw Radzewicz ◽  
W. Wasilewski ◽  
P. Wasylczyk ◽  
Marek Trippenbach ◽  
Jerzy S. Krasinski
Keyword(s):  
Ultrashort Pulses ◽  
Nonlinear Regime ◽  
Transparent Dielectrics

Ultrafast reflection and secondary ablation in laser processing of transparent dielectrics with ultrashort pulses

2014 ◽  
Vol 53 (5) ◽  
pp. 051512 ◽  
Author(s):  
Mingying Sun ◽  
Urs Eppelt ◽  
Wolfgang Schulz ◽  
Jianqiang Zhu
Keyword(s):  
Laser Processing ◽  
Ultrashort Pulses ◽  
Transparent Dielectrics

scholarly journals 3D Manufacturing of Glass Microstructures Using Femtosecond Laser

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 499
Author(s):  
Agnė Butkutė ◽  
Linas Jonušauskas
Keyword(s):  
Ultrashort Pulses ◽  
Microfluidic System ◽  
Rapid Expansion ◽  
Laser Material Processing ◽  
Field Development ◽  
Transparent Dielectrics ◽  
Fs Laser ◽  
Manufacturing Techniques ◽  
3D Processing ◽  
Material Interaction

The rapid expansion of femtosecond (fs) laser technology brought previously unavailable capabilities to laser material processing. One of the areas which benefited the most due to these advances was the 3D processing of transparent dielectrics, namely glasses and crystals. This review is dedicated to overviewing the significant advances in the field. First, the underlying physical mechanism of material interaction with ultrashort pulses is discussed, highlighting how it can be exploited for volumetric, high-precision 3D processing. Next, three distinct transparent material modification types are introduced, fundamental differences between them are explained, possible applications are highlighted. It is shown that, due to the flexibility of fs pulse fabrication, an array of structures can be produced, starting with nanophotonic elements like integrated waveguides and photonic crystals, ending with a cm-scale microfluidic system with micro-precision integrated elements. Possible limitations to each processing regime as well as how these could be overcome are discussed. Further directions for the field development are highlighted, taking into account how it could synergize with other fs-laser-based manufacturing techniques.

Bistability of ultrashort pulses in FBG under different nonlinearity profiles

2017 ◽  
Vol 26 (02) ◽  
pp. 1750022 ◽  
Author(s):  
P. V. F. Pinto ◽  
T. M. Pessoa ◽  
J. M. Jacinto ◽  
J. C. Sales ◽  
A. C. Ferreira ◽  
...  
Keyword(s):  
Band Gap ◽  
Fiber Bragg Grating ◽  
Optical Switching ◽  
Optical Bistability ◽  
Photonic Band Gap ◽  
Ultrashort Pulses ◽  
Nonlinear Regime ◽  
Bragg Grating ◽  
Linear Quadratic ◽  
Photonic Band

In this work, we studied the optical bistability of Fiber Bragg Grating (FBG) under nonlinear regime, considering three increasing and decreasing profiles of nonlinearity: linear, quadratic and exponential. We varied the nonlinearity range in each profile, and obtained different curves of bistability and reflectivity. We analyzed the powers [Formula: see text] and [Formula: see text], as well as the width of the photonic band gap ([Formula: see text] of each device under different nonlinearity profiles, and we observed the changes in reflectivity of the FBG. The power intensities [Formula: see text] and [Formula: see text] obtained for the bistability of decreasing profiles were lower than those obtained for the increasing profiles, and the values of [Formula: see text] were also lower in decreasing profiles, which is useful for optical switching applications.

Functional Failures and Noise Arising under the Effect of Powerful Ultrashort Pulses on Mobile Phones and Radio Transmitters

2004 ◽  
Vol 62 (11) ◽  
pp. 971-976
Author(s):  
V. B. Avdeev ◽  
D. V. Avdeeva ◽  
A. V. Berdyshev ◽  
G. V. Makarov ◽  
S. N. Panychev ◽  
...  
Keyword(s):  
Mobile Phones ◽  
Ultrashort Pulses ◽  
Radio Transmitters
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