Femtosecond laser micromachining of ophthalmologic hydrogels with two photon absorption enhancement

2008 ◽  
Author(s):  
Li Ding ◽  
Wayne H. Knox ◽  
Siddhesh Pawar ◽  
Glen Labenski ◽  
Thomas Smith ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Micromachining ◽  
Photon Absorption ◽  
Absorption Enhancement ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Femtosecond Laser Micromachining

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.

Optimization of Band Structure and Quantum-Size-Effect Tuning for Two-Photon Absorption Enhancement in Quantum Dots

Nano Letters ◽  
2011 ◽  
Vol 11 (3) ◽  
pp. 1227-1231 ◽  
Author(s):  
Lazaro A. Padilha ◽  
Gero Nootz ◽  
Peter D. Olszak ◽  
Scott Webster ◽  
David J. Hagan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Band Structure ◽  
Size Effect ◽  
Quantum Size Effect ◽  
Photon Absorption ◽  
Absorption Enhancement ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Quantum Size

scholarly journals Two‐Photon Absorption Enhancement by the Inclusion of a Tropone Ring in Distorted Nanographene Ribbons

2020 ◽  
Vol 59 (18) ◽  
pp. 7139-7145 ◽  
Author(s):  
Silvia Castro‐Fernández ◽  
Carlos M. Cruz ◽  
Inês F. A. Mariz ◽  
Irene R. Márquez ◽  
Vicente G. Jiménez ◽  
...  
Keyword(s):  
Photon Absorption ◽  
Absorption Enhancement ◽  
Two Photon Absorption ◽  
Two Photon

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

Simulating resonance-mediated two-photon absorption enhancement in rare-earth ions by a rectangle phase modulation

2018 ◽  
Vol 27 (1) ◽  
pp. 013202 ◽  
Author(s):  
Da-Long Qi ◽  
Ye Zheng ◽  
Wen-Jing Cheng ◽  
Yun-Hua Yao ◽  
Lian-Zhong Deng ◽  
...  
Keyword(s):  
Rare Earth ◽  
Phase Modulation ◽  
Rare Earth Ions ◽  
Photon Absorption ◽  
Absorption Enhancement ◽  
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
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