Stochastization of vibrational energy of polyatomic molecules in multiphoton excitation by IR laser radiation

1985 ◽  
Vol 6 (3) ◽  
pp. 334-341 ◽  
Author(s):  
A. A. Makarov
Keyword(s):  
Laser Radiation ◽  
Vibrational Energy ◽  
Polyatomic Molecules ◽  
Multiphoton Excitation ◽  
Ir Laser

Role of weak transitions in multiphoton excitation of molecules by IR laser radiation

1978 ◽  
Vol 25 (3) ◽  
pp. 337-342 ◽  
Author(s):  
I.N. Knyazev ◽  
V.S. Letokhov ◽  
V.V. Lobko
Keyword(s):  
Laser Radiation ◽  
Multiphoton Excitation ◽  
Ir Laser ◽  
Weak Transitions

scholarly journals Selective IR Laser Induced Isomerization and Dissociation of BIS (Trifluoromethyl) Ketene Molecules

1996 ◽  
Vol 16 (4) ◽  
pp. 255-264 ◽  
Author(s):  
V. B. Laptev ◽  
L. M. Tumanova ◽  
E. A. Ryabov
Keyword(s):  
Laser Radiation ◽  
Oxygen Isotopes ◽  
Second Harmonic ◽  
Multiphoton Excitation ◽  
Radiation Frequency ◽  
Isomerization Product ◽  
Harmonic Radiation ◽  
Ir Laser ◽  
Maximum Value ◽  
Second Harmonic Radiation

Multiphoton IR laser induced isomerization and dissociation of (CF3)2C=C=O (FMK) molecules have been studied. The antisymmetric stretch v1 = 2192 cm-1 of C=C=O—and antisymmetric v16 = 991 cm-1 of C—C— bonds were excited by the second- and first harmonics of a pulsed TEA CO2 laser. The dependence of isomerization conversion on laser radiation frequency, fluence, and number of shots was measured. The isomerization channel was predominant compared with dissociation for the conditions of IR multiphoton excitation under study.The isomerization of FMK by the second–harmonic radiation of a CO2 laser was proved to be selective with respect to oxygen isotopes. The isomerization product (FMA molecules) was enriched with 18O with maximum value of selectivity α(18/16) = 3.9 when FMK molecules were excited at 2ωlas = 2143.8 cm-1.

Intramolecular Vibrational Dynamics in Free Polyatomic Molecules with C═O Chromophore Bond Excited by Resonant Femtosecond IR Laser Radiation

2014 ◽  
Vol 118 (6) ◽  
pp. 955-964 ◽  
Author(s):  
Sergey V. Chekalin ◽  
Victor O. Kompanets ◽  
Pavel V. Koshlyakov ◽  
Vladimir B. Laptev ◽  
Sergey V. Pigulsky ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Polyatomic Molecules ◽  
Vibrational Dynamics ◽  
Ir Laser

scholarly journals The Spectral Features of Polyatomic Molecules Multiphoton Excitation in a Strong IR-Laser Field

1992 ◽  
Vol 12 (3-4) ◽  
pp. 147-172 ◽  
Author(s):  
S. S. Alimpiev ◽  
B. G. Sartakov
Keyword(s):  
Experimental Data ◽  
Computer Simulation ◽  
High Pressure ◽  
Laser Field ◽  
Polyatomic Molecules ◽  
Spectral Features ◽  
Multiphoton Excitation ◽  
Excitation Spectra ◽  
Ir Laser ◽  
Good Agreement

The experimental data on multiphoton excitation of polyatomic molecules in strong fields of high pressure continuously tunable CO2 lasers are presented. The program package for computer simulation of multiphoton excitation spectra and excitation dynamics is developed. Good agreement between computer simulation and experimental data is observed.

Sign in / Sign up

Export Citation Format

Share Document