Transition Spectra in the Vibrational Quasicontinuum of Polyatomic Molecules. IR Multiple-Photon Absorption in SF6. 1. Experimental Studies

1999 ◽  
Vol 103 (51) ◽  
pp. 11293-11298 ◽  
Author(s):  
V. N. Lokhman ◽  
A. N. Petin ◽  
E. A. Ryabov ◽  
V. S. Letokhov
Keyword(s):  
Experimental Studies ◽  
Polyatomic Molecules ◽  
Photon Absorption

Fragmentation of isolated polyatomic molecules induced by vacuum ultraviolet to soft X-ray photon absorption

1990 ◽  
Vol 101 (2-3) ◽  
pp. 273-282 ◽  
Author(s):  
M.-J. Hubin-Franskin ◽  
J. Delwiche ◽  
M. Furlan ◽  
K. Ibrahim ◽  
R. Thissen ◽  
...  
Keyword(s):  
Vacuum Ultraviolet ◽  
Polyatomic Molecules ◽  
Photon Absorption ◽  
X Ray

Multiple photon absorption in polyatomic molecules

1981 ◽  
Vol 17 (1) ◽  
pp. 56
Author(s):  
Vladimir Starov ◽  
Nur Selamoglu ◽  
Colin Steel
Keyword(s):  
Polyatomic Molecules ◽  
Photon Absorption

PUMP POWER DEPENDENCE OF PHASE-SHIFT, KERR AND ELECTROSTRICTIVE NONLINEARITIES IN SILICA CORE FIBER

2008 ◽  
Vol 22 (10) ◽  
pp. 763-773
Author(s):  
SUNITA SHARMA ◽  
S. K. GHOSHAL ◽  
DEVENDRA MOHAN
Keyword(s):  
Pump Power ◽  
Phase Shift ◽  
Power Loss ◽  
Experimental Studies ◽  
Photon Absorption ◽  
Copper Vapor Laser ◽  
Nonlinear Susceptibility ◽  
Laser Source ◽  
Power Dependence ◽  
Silica Core

Analytical, numerical and experimental studies have been made to estimate the pump power dependence on power loss in multimode fibers. The frequency response of the third-order nonlinear susceptibility is studied using the anharmonic oscillator model. The underlying mechanism responsible for loss in power propagating through the optical fiber has been understood in terms of two-photon absorption and phase shift. The present study has been done by transmitting the signal of Copper Vapor Laser (CVL) having λ=510.6 nm, with repetition rate ~5.6 kHz, pulse duration 60 ns, through 5 m long silica core multimode fiber. The contribution of the effect of Kerr and electrostrictive nonlinearities to power loss has also been calculated, separately. Results show that the power loss in optical fibers is greatly influenced by the presence of impurities and also the power level of the laser source.

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