Stimulated Emission Observed from an Organic Dye, Chloro-aluminum Phthalocyanine

Sorokin, P. P.; Lankard, J. R.

doi:10.1147/rd.102.0162

Cited by 350 publications

(78 citation statements)

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“…Encouragement may be taken in the consideration that the very first organic laser dyes rendered efficiencies of about 4% 23,24 . Furthermore, it must be emphasized that this is a new type of laser gain medium in that anti-B 18 H 22 is an inorganic molecular species with structural and chemical properties unlike those of conventional laser materials.…”

Section: Resultsmentioning

confidence: 99%

A borane laser

et al. 2015

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Emission from electronically excited species forms the basis for an important class of light sources-lasers. So far, commercially available solution-processed blue-emitting laser materials are based on organic compounds or semiconductor nanocrystals that have significant limitations: either low solubility, low chemical-and/or photo-stability and/or uncompetitive prices. Here we report a novel and competitive alternative to these existing laser materials that is based on boron hydrides, inorganic cluster compounds with a rich and diverse chemistry. We demonstrate that solutions of the borane anti-B 18 H 22 show, under pulsed excitation, blue laser emission at 406 nm with an efficiency (ratio of output/input energies) of 9.5%, and a photostability superior to many of the commercially available state-of-the-art blue laser dyes. This demonstration opens the doors for the development of a whole new class of laser materials based on a previously untapped resource for laser technology-the boranes.

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Section: Resultsmentioning

confidence: 99%

A borane laser

et al. 2015

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“…The interest in porphyrins and phthalocyanines molecules as systems capable of SE is due to their high values of the fluorescence quantum yields, intense absorption bands in the visible spectrum, allowing carrying out effectively their excitation and localization of the fluorescence spectra in the red and near-IR region, as well as high thermal and photo stabilities. We recall that lasing emission from an organic molecule was observed for the first time in 1964 by Sorokin and Lankard [9,10]: stimulated emission was observed when a solution of chloro-aluminum phthalocyanine dissolved in ethanol was irradiated by the beam from a giant-pulse ruby laser. The wavelength of this stimulated emission was centered at approximately 755 nm.…”

Section: Introductionmentioning

confidence: 94%

Electronic spectroscopy, stimulated emission, and persistent spectral hole burning of cryogenic nitrogen matrices doped with tetrabenzoporphin

Arabei

Galaup

McCaffrey

et al. 2012

Low Temperature Physics

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This paper deal with our on-going work on the electronic spectroscopy of tetrapyrrole molecules embedded in cryogenic hosts. Under nanosecond laser excitation of the free-base tetrabenzoporphin molecules in a nitrogen matrix at 8 K, increasing the laser pulse energy results in essential enhancement of the intensity of one or several vibronic emission lines to take place in the fine-structure fluorescence spectrum. The observed intense monochromatic radiation possesses characteristics of stimulated radiation being realized as a result of a transition from the purely electronic S 1 level to a vibrational sublevel of the S 0 state, corresponding to excitation of stretching C-C vibrations of the tetrapyrrole methane bridges. We also report on persistent spectral hole-burning effects. The analysis of the holes and antiholes formation gives some insight on the photochemical properties of tetrabenzoporphin in a nitrogen matrix.

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“…These experiments were done long before the advent, in 1966, of tunable dye lasers [54,55]. If you look at Fig.…”

Section: Optical Double Resonancementioning

confidence: 99%

Optical spectroscopy of radioactive atoms

Stroke

2007

Laser 2006

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An epitome of optical methods used in atomic spectroscopy of radioactive atoms is presented. The overview addresses a number of results in atomic structure and hyperfine structure, and the implications in the study of electric and magnetic properties of nuclei. An aperçu is given of the concomitant development of the experimental methods, from simple optical techniques to laser spectroscopy, and from use of "off-line" experiments to ones using ISOLDE-type facilities.

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Stimulated Emission Observed from an Organic Dye, Chloro-aluminum Phthalocyanine

Cited by 350 publications

References 1 publication

A borane laser

A borane laser

Electronic spectroscopy, stimulated emission, and persistent spectral hole burning of cryogenic nitrogen matrices doped with tetrabenzoporphin

Optical spectroscopy of radioactive atoms

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