New experimental method for determining the S1 → Sn absorption spectrum of highly fluorescent dyes

1993 ◽  
Vol 71 (1-2) ◽  
pp. 59-65 ◽  
Author(s):  
Marie-Claire Gazeau ◽  
Véronique Wintgens ◽  
Pierre Valat ◽  
Jean Kossanyi ◽  
Denis Doizi ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Fluorescent Dyes ◽  
Visible Region ◽  
Excited State Absorption ◽  
Absorption Cross ◽  
Excited Singlet ◽  
Uv Visible ◽  
The One ◽  
State Concentration

A new method has been developed to measure the excited-state absorption cross sections σ1n, of highly fluorescent dyes. which gives excited singlet-state absorption (ESSA) spectra over most of the UV–visible region, including the one where the fluorescence occurs. The error in the σ1n values depends on that for the singlet excited-state concentration. Our method used benzophenone as an actinometer to determine the excited-state concentration. Rhodamine 6G was used to test the method; the ESSA spectrum obtained shows a maximum around 530 nm with an excited-state absorption cross section σ1n value of 2.08 × 10−16 cm2. Our results are discussed and compared with those reported in the literature.

Excited-state Absorption Cross Sections of a Phosphine-substituted Bithiophene

2009 ◽  
Author(s):  
Timothy M. Pritchett ◽  
Jianwei Wang ◽  
Christopher M. Lawson ◽  
Qun Zhao ◽  
Gary M. Gray
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Excited State Absorption ◽  
Absorption Cross

Excited-state-absorption cross sections and amplifier modeling in the 1300-nm region for Nd-doped glasses

1992 ◽  
Vol 4 (3) ◽  
pp. 244-247 ◽  
Author(s):  
S. Zemon ◽  
B. Pedersen ◽  
G. Lambert ◽  
W.J. Miniscalco ◽  
B.T. Hall ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Excited State Absorption ◽  
Absorption Cross ◽  
Doped Glasses

Excited state absorption cross sections of 4I13/2 of Er3+ in ZBLAN

2009 ◽  
Vol 31 (11) ◽  
pp. 1658-1662 ◽  
Author(s):  
Bo Wang ◽  
Lihong Cheng ◽  
Haiyang Zhong ◽  
Jiashi Sun ◽  
Yue Tian ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Excited State Absorption ◽  
Absorption Cross

Z-scan measurement of the ground and excited state absorption cross sections of Cr/sup 4+/ in yttrium aluminum garnet

1999 ◽  
Vol 35 (7) ◽  
pp. 1086-1091 ◽  
Author(s):  
Guohua Xiao ◽  
Jin Hong Lim ◽  
S. Yang ◽  
E. Van Stryland ◽  
M. Bass ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Yttrium Aluminum Garnet ◽  
Excited State Absorption ◽  
Absorption Cross ◽  
Yttrium Aluminum

NONLINEAR OPTICAL RESPONSE AND REVERSE SATURABLE ABSORPTION OF RARE EARTH PHTHALOCYANINE IN DMF SOLUTION

2003 ◽  
Vol 12 (03) ◽  
pp. 367-376 ◽  
Author(s):  
G. A. KUMAR
Keyword(s):  
Rare Earth ◽  
Excited State ◽  
Cross Sections ◽  
Nonlinear Optical ◽  
Excited State Absorption ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Absorption Cross

Nonlinear optical response and reverse saturable absorption behavior of various rare earth phthalocyanines such as Nd , Eu , Sm and La in dimethyl formamide (DMF) solution were studied under high power Nd:YAG laser excitation. Excited state absorption cross-sections and two-photon absorption cross-sections of these systems are measured from the limiting characteristics. The SmHPc 2 system yields maximum value for excited state absorption cross-section and its potential application in DMF as a suitable optical limiter is also discussed.

Wavelength dependent studies of nonlinear absorption in zinc meso-tetra(p-methoxyphenyl)tetrabenzoporphyrin (Znmp TBP) using Z-scan technique

2001 ◽  
Vol 05 (07) ◽  
pp. 549-554 ◽  
Author(s):  
N. K. M. NAGA SRINIVAS ◽  
S. VENUGOPAL RAO ◽  
D. V. G. L. N. RAO ◽  
B. K. KIMBALL ◽  
M. NAKASHIMA ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Nonlinear Absorption ◽  
Visible Region ◽  
Excited State Absorption ◽  
Photon Absorption ◽  
Dispersion Data ◽  
Level Model ◽  
Scan Data ◽  
Two Photon Absorption Coefficient

We report here, our experimental results and theoretical analysis of the dispersion data of nonlinear absorption in zinc meso-tetra-(p-methoxyphenyl)tetrabenzoporphyrin (ZnmpTBP). Using a ns optical parametric oscillator (OPO) we obtain the open aperture Z-scan data over the visible region starting from 480 nm to 600 nm. We use a more general five-level model for evaluating the excited state parameters like excited state absorption coefficients, two-photon absorption coefficient, etc. Due to its large excited state absorption cross-sections this material acts as a very good candidate for a broadband optical limiter in the visible region.

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