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

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.

Influence of laser and material parameters on two photon absorption in Rhodamine B and Rhodamine 6G solutions in MeOH

Optik ◽  
2019 ◽  
Vol 183 ◽  
pp. 835-841 ◽  
Author(s):  
Rabia Ahmad ◽  
M. Shahid Rafique ◽  
Ali Ajami ◽  
Shazia Bashir ◽  
Wolfgang Husinsky ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Rhodamine 6G ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Material Parameters ◽  
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

LASER INDUCED THERMAL LENS EFFECT IN RHODAMINE B — SIGNATURE OF RESONANT TWO PHOTON ABSORPTION

1995 ◽  
Vol 09 (22) ◽  
pp. 1471-1477 ◽  
Author(s):  
C. V. BINDHU ◽  
S. S. HARILAL ◽  
RIJU C. ISSAC ◽  
GEETHA K. VARIER ◽  
V. P. N. NAMPOORI ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Laser Power ◽  
Photon Absorption ◽  
Thermal Lensing ◽  
Absorption Process ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photon Process ◽  
Thermal Lens Effect ◽  
Made In

Measurement of thermal lensing signal as a function of laser power made in Rhodamine B solutions in methanol give clear evidence of two photon absorption process within certain concentration ranges when 488 nm Ar + laser beam is used as the pump source. Only one photon process is found to occur when 514 nm and 476 nm beams are used as the pump.

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

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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