Journal ArticleDOI
Laser-pumped stimulated emission from organic dyes: experimental studies and analytical comparisons
TLDR
In this article, the authors compared the stimulated emission spectra of two organic dyes, chloro-aluminum phthalocyanine (CAP) and 3,3′-diethylthiatricarbocyanines iodide (DTTC), using a giant-pulse ruby laser excitation.Abstract:
Stimulated emission spectra of two organic dyes, chloro-aluminum phthalocyanine (CAP) and 3,3′-diethylthiatricarbocyanine iodide (DTTC) are compared. Giant-pulse ruby laser excitation was used in both cases. An end pumping configuration employed with DTTC resulted in narrow beam divergences and high conversion efficiencies. For CAP, the oscillating transition is one which terminates on an excited vibrational level of the ground electronic state. For DTTC, stimulated emission at the lowest concentrations occurs at the peak of the Franck–Condon-shifted fluorescence band but moves to longer wavelengths as the concentration is increased. The transient behavior of the CAP laser, pumped in a transverse geometry, was observed and compared with computer solutions of the rate equations. Polarization measurements of the laser beams were also made. An analysis is given of requirements for achieving optimal pumping by means of flashlamps.
‡
[The paper concludes with an addendum reporting recent observations of stimulated emission from dye solutions lasing at wavelengths ranging from blue (4385 A) to orange (6000 A)].read more
Citations
More filters
Journal ArticleDOI
cw OPERATION OF AN ORGANIC DYE SOLUTION LASER
TL;DR: In this paper, a cw laser using a 2.5×10−4 M solution of rhodamine 6G in water containing a deaggregating agent (1.5% Triton X100) is described.
Journal ArticleDOI
Amplified spontaneous emission and signal amplification in dye-laser systems
TL;DR: In this paper, a set of coupled rate equations for the excited-state population densities and for the photon fluxes in both directions, at all wavelengths, is presented, and the temporal and spatial dependence of these quantities are accounted for.
Journal ArticleDOI
Flashlamp-excited organic dye lasers
TL;DR: In this paper, the effect of the triplet state on the critical inversion of a flashlamp-excited dye laser has been investigated in terms of the singlet state absorption and fluorescence and triplet-state absorption spectra.
Journal ArticleDOI
Flashlamp‐Pumped Organic‐Dye Lasers
TL;DR: In this article, the results of recent theoretical and experimental studies on flashlamp-pumped organic dye lasers are presented, and the importance of rapid pumping is considered in detail.
Journal ArticleDOI
Physics of dye lasers
TL;DR: The physical mechanisms important to the operation of tunable lasers utilizing organic dyes are discussed in this article, where a wide variety of practical laser configurations possible for optically pumped dye lasere are examined.
References
More filters
Journal ArticleDOI
Solvent Effects upon Fluorescence Spectra and the Dipolemoments of Excited Molecules
TL;DR: In this article, a general formula for the difference of solvent shifts of fluorescence and absorption spectra in the approximation of long range dipolar interaction was derived using Ooshika's theory of light absorption in solution.
Journal ArticleDOI
Hydrogen Bonding Effect on the Fluorescence of Some Nitrogen Heterocycles. I
Noboru Mataga,Shizuyo Tsuno +1 more
TL;DR: In this article, the hydrogen bonding effect on the fluorescence of quinoline and acridine was studied in non-polar solvent mixed with various proton donors, and the equilibrium constants of hydrogen bonding calculated from the absorption and fluorescence data were the same for these molecules, in contradistinction to the case of naphthols.
Journal ArticleDOI
On the Base Strength of Some Nitrogen Heterocycles in the Excited State
TL;DR: In this paper, the fluorescence and absorption spectra of aqueous solutions of quinoline, acridine and 2,8-diaminoacridine were observed at various pH values, and it became clear that the stabilization energy by proton addition is larger in the excited state than in the ground state.
Journal ArticleDOI
Giant Pulse Shortening by Resonator Transients
TL;DR: In this article, a method for giant pulse shortening by oscillator transients is proposed, where giant pulses are used to pump a secondary laser oscillator with suitable absorption bands.
Related Papers (5)
Stimulated emission observed from an organic dye, chloro-aluminum phthalocyanine
P. P. Sorokin,J. R. Lankard +1 more