scholarly journals Photoacoustic method for measuring high‐order multiphoton absorption in transparent materials

1988 ◽  
Vol 83 (S1) ◽  
pp. S57-S57
Author(s):  
Scott C. Jones
Keyword(s):  
High Order ◽  
Multiphoton Absorption ◽  
Photoacoustic Method ◽  
Transparent Materials

Beam Splitters for High-Order Harmonics Using Transparent Materials to Visible Light

2012 ◽  
pp. 151-153
Author(s):  
Yosuke Kojima ◽  
Yuske Furukawa ◽  
Yasuo Nabekawa ◽  
Eiji J. Takahashi ◽  
Fumihiko Kannari ◽  
...  
Keyword(s):  
Visible Light ◽  
High Order ◽  
Beam Splitters ◽  
Transparent Materials

Practical formula for the evaluation of high-order multiphoton absorption in thin nonlinear media

2009 ◽  
Vol 56 (14) ◽  
pp. 1626-1631 ◽  
Author(s):  
Juan J. Miret ◽  
María T. Caballero ◽  
Vicente Camps ◽  
Carlos J. Zapata-Rodríguez
Keyword(s):  
High Order ◽  
Multiphoton Absorption ◽  
Nonlinear Media

Interplay between self-focusing and high-order multiphoton absorption

2001 ◽  
Vol 18 (12) ◽  
pp. 1891 ◽  
Author(s):  
Sergey Polyakov ◽  
Fumiyo Yoshino ◽  
George Stegeman
Keyword(s):  
High Order ◽  
Multiphoton Absorption ◽  
Self Focusing

High-Order Vector Bessel-Gauss Beams for Laser Micromachining of Transparent Materials

2021 ◽  
Vol 16 (3) ◽  
Author(s):  
Justas Baltrukonis ◽  
Orestas Ulčinas ◽  
Sergej Orlov ◽  
Vytautas Jukna
Keyword(s):  
Laser Micromachining ◽  
High Order ◽  
Transparent Materials

scholarly journals Progress in ultrafast laser processing and future prospects

Nanophotonics ◽  
2017 ◽  
Vol 6 (2) ◽  
pp. 393-413 ◽  
Author(s):  
Koji Sugioka
Keyword(s):  
Laser Processing ◽  
Ultrafast Lasers ◽  
Industrial Applications ◽  
Femtosecond Laser Pulses ◽  
Ultrafast Laser ◽  
Heat Diffusion ◽  
Multiphoton Absorption ◽  
Future Prospects ◽  
Practical Applications ◽  
Transparent Materials

AbstractThe unique characteristics of ultrafast lasers have rapidly revolutionized materials processing after their first demonstration in 1987. The ultrashort pulse width of the laser suppresses heat diffusion to the surroundings of the processed region, which minimizes the formation of a heat-affected zone and thereby enables ultrahigh precision micro- and nanofabrication of various materials. In addition, the extremely high peak intensity can induce nonlinear multiphoton absorption, which extends the diversity of materials that can be processed to transparent materials such as glass. Nonlinear multiphoton absorption enables three-dimensional (3D) micro- and nanofabrication by irradiation with tightly focused femtosecond laser pulses inside transparent materials. Thus, ultrafast lasers are currently widely used for both fundamental research and practical applications. This review presents progress in ultrafast laser processing, including micromachining, surface micro- and nanostructuring, nanoablation, and 3D and volume processing. Advanced technologies that promise to enhance the performance of ultrafast laser processing, such as hybrid additive and subtractive processing, and shaped beam processing are discussed. Commercial and industrial applications of ultrafast laser processing are also introduced. Finally, future prospects of the technology are given with a summary.

Determination of the Burgers vector of a dislocation in a Fe-Mn alloy by weak-beam image in HVEM

1978 ◽  
Vol 36 (1) ◽  
pp. 330-331
Author(s):  
Y. Ishida ◽  
H. Ishida ◽  
K. Kohra ◽  
H. Ichinose
Keyword(s):  
High Order ◽  
Simulation Technique ◽  
The Other ◽  
Image Simulation ◽  
Diffraction Vector ◽  
Burgers Vector ◽  
Weak Beam ◽  
Beam Image ◽  
Edge Component

IntroductionA simple and accurate technique to determine the Burgers vector of a dislocation has become feasible with the advent of HVEM. The conventional image vanishing technique(1) using Bragg conditions with the diffraction vector perpendicular to the Burgers vector suffers from various drawbacks; The dislocation image appears even when the g.b = 0 criterion is satisfied, if the edge component of the dislocation is large. On the other hand, the image disappears for certain high order diffractions even when g.b ≠ 0. Furthermore, the determination of the magnitude of the Burgers vector is not easy with the criterion. Recent image simulation technique is free from the ambiguities but require too many parameters for the computation. The weak-beam “fringe counting” technique investigated in the present study is immune from the problems. Even the magnitude of the Burgers vector is determined from the number of the terminating thickness fringes at the exit of the dislocation in wedge shaped foil surfaces.

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