Two-photon absorption spectra of crystalline naphthalene and of the naphthalene molecule in solution
โ Scribed by Amalia Bergman; Joshua Jortner
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 325 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The two-photon absorption spectra of crystalline naphthalene and of the naphthalene molecule in solution were measured over the energy range 31000-45000 cm-' by monitoring the fluorescence excited by tunable dye lasers.
The vibronically-induced odd-parity 'A,gd 'B$ and 'AIg+ 'B,,
'AQ-c 'Alg transitions were identified.
transitions and two even-parity allowed 'A,g+ 'Big,
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T&e naphthalene absorption in the spectrai legion of 3Sk-4100 BL consists oE two ~~~e,ndic~~~y polarized band systerns. This can be shown by polarization measurements. The arguments given do not atlow a. decision as to whether or not the short axis polarized band is the 3AS + 3BTu transition OI an i
Tcmperaturc-dependrnt intensit) data for two-photon excitation and second harmonic generation signals phase nwclwd onto the polariron brrtnches of the sin@t a-e\citon of naphthalene are presented. The data are shoun to be in qualitatht agreement with the polariton fusion model which accounts for str