Fabrication of Novel Biocompatible Surfaces by Two-Photon Absorption Technique Using Femtosecond Laser

2009 ◽  
Vol 505 (1) ◽  
pp. 219/[457]-230/[468] ◽  
Author(s):  
Masaru Tanaka ◽  
Hirokazu Sato ◽  
Yugo Sasaya ◽  
Suguru Horinouchi ◽  
Jun-ichi Hotta ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Absorption Technique

Fabrication of Three-Dimensional Micro-Structures with Two-Photon Absorption by Femtosecond Laser

2006 ◽  
Vol 532-533 ◽  
pp. 568-571
Author(s):  
Ming Zhou ◽  
Hai Feng Yang ◽  
Li Peng Liu ◽  
Lan Cai
Keyword(s):  
Photonic Crystal ◽  
Femtosecond Laser ◽  
Detection System ◽  
Three Dimensional ◽  
Photon Absorption ◽  
Micro Fabrication ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photo Polymerization ◽  
System A

The photo-polymerization induced by Two-Photon Absorption (TPA) is tightly confined in the focus because the efficiency of TPA is proportional to the square of intensity. Three-dimensional (3D) micro-fabrication can be achieved by controlling the movement of the focus. Based on this theory, a system for 3D-micro-fabrication with femtosecond laser is proposed. The system consists of a laser system, a microscope system, a real-time detection system and a 3D-movement system, etc. The precision of micro-machining reaches a level down to 700nm linewidth. The line width was inversely proportional to the fabrication speed, but proportional to laser power and NA. The experiment results were simulated, beam waist of 0.413μm and TPA cross section of 2×10-54cm4s was obtained. While we tried to optimize parameters, we also did some research about its applications. With TPA photo-polymerization by means of our experimental system, 3D photonic crystal of wood-pile structure twelve layers and photonic crystal fiber are manufactured. These results proved that the micro-fabrication system of TPA can not only obtain the resolution down to sub-micron level, but also realize real 3D micro-fabrication.

scholarly journals Two-photon absorption-induced photoacoustic imaging of Rhodamine B dyed polyethylene spheres using a femtosecond laser

2013 ◽  
Vol 21 (19) ◽  
pp. 22410 ◽  
Author(s):  
Gregor Langer ◽  
Klaus-Dieter Bouchal ◽  
Hubert Grün ◽  
Peter Burgholzer ◽  
Thomas Berer
Keyword(s):  
Femtosecond Laser ◽  
Rhodamine B ◽  
Photoacoustic Imaging ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Plasmon-Enhanced Two-Photon Absorption of Infrared Femtosecond Laser Pulses in Thin Gold Films

JETP Letters ◽  
2019 ◽  
Vol 109 (6) ◽  
pp. 382-386 ◽  
Author(s):  
S. I. Kudryashov ◽  
P. A. Danilov ◽  
S. G. Bezhanov ◽  
A. A. Rudenko ◽  
A. A. Ionin ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Photon Absorption ◽  
Gold Films ◽  
Two Photon Absorption ◽  
Two Photon

Two-Photon-Absorption Technique for Selective Detection of Copper(II) Ions in Aqueous Solution Using a Dansyl-Pyrene Conjugate

2011 ◽  
Vol 6 (9) ◽  
pp. 2246-2250 ◽  
Author(s):  
Vadapalli Chandrasekhar ◽  
Mrituanjay D. Pandey ◽  
Sandeep Kumar Maurya ◽  
Pratik Sen ◽  
Debabrata Goswami
Keyword(s):  
Aqueous Solution ◽  
Photon Absorption ◽  
Selective Detection ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Absorption Technique

Two-photon absorption-induced photoacoustic and luminescence imaging employing a femtosecond laser

2014 ◽  
Author(s):  
Gregor Langer ◽  
Istvan Attila Veres ◽  
Klaus-Dieter Bouchal ◽  
Roland Galos ◽  
Jakob Kilgus ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Luminescence Imaging ◽  
Two Photon
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