Measurement of two-photon absorption using the photo-thermal lens effect

2008 ◽  
Vol 281 (9) ◽  
pp. 2598-2604 ◽  
Author(s):  
A. Marcano O ◽  
K. Williams ◽  
N. Melikechi
Keyword(s):  
Thermal Lens ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Lens Effect ◽  
Two Photon ◽  
Thermal Lens Effect

STUDIES ON TWO-PHOTON ABSORPTION OF ANILINE USING THERMAL LENS EFFECT

2003 ◽  
Vol 12 (01) ◽  
pp. 75-80 ◽  
Author(s):  
ACHAMMA KURIAN ◽  
S. THOMAS LEE ◽  
K. P. UNNIKRISHNAN ◽  
D. SAJAN GEORGE ◽  
V. P. N. NAMPOORI ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Optical Parametric Oscillator ◽  
Thermal Lens ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Lens Effect ◽  
Two Photon ◽  
Optical Parametric ◽  
Source Studies ◽  
Thermal Lens Effect

Two-photon absorption spectrum of aniline is recorded using thermal lens effect with optical parametric oscillator as the pump source. Studies show that the two-photon absorption spectrum observed corresponds to 1A1 → 1B2 transition of aniline.

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.

Ultrafast pulse optimization using two-photon absorption induced thermal lens

2005 ◽  
Vol 251 (4-6) ◽  
pp. 423-428 ◽  
Author(s):  
D.L. Silva ◽  
L.A.L. Azeka ◽  
S.C. Zilio ◽  
L. Misoguti ◽  
C.R. Mendonça
Keyword(s):  
Thermal Lens ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Ultrafast Pulse

Use of Differential Thermal Lensing to Study Two-Photon Absorption in Solutions

1994 ◽  
Vol 48 (11) ◽  
pp. 1419-1422 ◽  
Author(s):  
V. P. Kozich ◽  
A. Marcano ◽  
F. E. Hernández ◽  
J. Castillo
Keyword(s):  
Thermal Lens ◽  
Photon Absorption ◽  
Thermal Lensing ◽  
Dye Molecules ◽  
Power Dependence ◽  
Absorption Process ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Solvent Molecules ◽  
Organic Solutions

The thermal lensing technique is applied to study two-photon absorption of dye molecules in organic solutions. With the use of a differential two-cell thermal lens spectrometer, the contribution due to one-photon absorption by solvent molecules is suppressed. Observed power dependence of the thermal lensing signal confirms the two-photon character of the absorption process.

Two and Three Photon Absorption in Rhodamine 6G Methanol Solutions Using Pulsed Thermal Lens Technique

1998 ◽  
Vol 07 (04) ◽  
pp. 531-538 ◽  
Author(s):  
C. V. Bindhu ◽  
S. S. Harilal ◽  
Achamma Kurian ◽  
V. P. N. Nampoori ◽  
C. P. G. Vallabhan
Keyword(s):  
Thermal Lens ◽  
Rhodamine 6G ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Dual Beam ◽  
Methanol Solutions ◽  
Thermal Lens Signal ◽  
Transient Thermal ◽  
532 Nm

Dual beam transient thermal lens studies were carried out in rhodamine 6G methanol solutions using 532 nm pulses from a frequency doubled Nd:YAG laser. Analysis of thermal lens signal shows the existence of different nonlinear processes like two photon absorption and three photon absorption phenomena along with one photon absorption. Concentration of the dye in the solution has been found to influence the occurrence of the different processes in a significant way.

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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