Pulse-width dependency of the fabricating resolution of the two-photon absorption photo-polymerization

2007 ◽  
Author(s):  
Hong J. Kong ◽  
Shin W. Yi ◽  
Dong-Yol Yang ◽  
Kwang-Sup Lee ◽  
Jin-Baek Kim ◽  
...  
Keyword(s):  
Pulse Width ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photo Polymerization

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.

Two-photon absorption in diamond and its application to ultraviolet femtosecond pulse-width measurement

1991 ◽  
Vol 16 (7) ◽  
pp. 499 ◽  
Author(s):  
J. I. Dadap ◽  
G. B. Focht ◽  
D. H. Reitze ◽  
M. C. Downer
Keyword(s):  
Pulse Width ◽  
Femtosecond Pulse ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Width Measurement

Second order interference in two photon absorption

1996 ◽  
Vol 43 (9) ◽  
pp. 1765-1771 ◽  
Author(s):  
M. W. HAMILTON and D. S. ELLIOTT
Keyword(s):  
Second Order ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon
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