A new solid-state tunable laser in the visible

Reisfeld, R.; Brusilovsky, D.; Eyal, M.; Miron, E.; Burstein, Z.; Ivri, J.

doi:10.1016/0009-2614(89)87552-9

Cited by 124 publications

(40 citation statements)

References 8 publications

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“…Suitably doped gels exhibit highly efficient luminescence, photochemical hole burning, photochromism and tunable laser action. 54 It is important to point out that in pure inorganic matrices, activity of the dopant tends to decrease because of thermodynamic incompatibility between the organic and inorganic constituents. Consequently, organic-doped inorganic gels are being replaced by organic-doped hybrid gels, where the hybrid gel may belong to any of the classes.…”

Section: Organic-doped Gelsmentioning

confidence: 99%

Transparent Organic/Inorganic Hybrid Gels: A Classification Scheme

Wójcik

Klein

1997

Appl. Organometal. Chem.

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Section: Organic-doped Gelsmentioning

confidence: 99%

Transparent Organic/Inorganic Hybrid Gels: A Classification Scheme

Wójcik

Klein

1997

Appl. Organometal. Chem.

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“…[59][60][61] The first examples of white LEDs (WLEDs) based in hybrids date back to the final of last century comprising dye-modified silanes incorporating hole-or electron-transporting units and light-emitting species in the orange [62] and green [11] spectral regions. Later on, more efficient WLEDs were reported involving silsesquioxane hybrid matrices, as, for example, that based on the phenylenevinylenediimide precursor, luminance value of 10 cd·m −2 for voltages lower than 30 V, [12] and that based on polyhedral oligomeric silsesquioxanes bearing in the structure a dye molecule from the cyanine family, threshold operating voltage of 4 V. [63] An intriguing example is the fabrication of a WLEDs by coating a commercial UV LED (390 nm) with a periodic mesoporous organosilica (PMO) film doped with Rhodamine 6G (Rh6G) and synthesized by surfactant-templated sol-gel polycondensation using a 1,3,6,8-tetraphenylpyrene (TPPy)-containing organosilane precursor.…”

Section: White Light Emission and Ledsmentioning

confidence: 99%

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Parola

Julián‐López

Carlos

et al. 2016

Adv Funct Materials

240

116

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Research on hybrid inorganic‐organic materials has experienced an explosive growth since the 1980s, with the expansion of soft inorganic chemistry based processes. Indeed, mild synthetic conditions, low processing temperatures provided by “chimie douce” and the versatility of the colloidal state allow for the mixing of the organic and inorganic components at the nanometer scale in virtually any ratio to produce the so called hybrid materials. Today a high degree of control over both composition and nanostructure of these hybrids can be achieved allowing tunable structure‐property relationships. This, in turn, makes it possible to tailor and fine‐tune many properties (mechanical, optical, electronic, thermal, chemical…) in very broad ranges, and to design specific multifunctional systems for applications. In particular, the field of “Hybrid‐Optics” has been very productive not only scientifically but also in terms of applications. Indeed, numerous optical devices based on hybrids are already in, or very close, to the market. This review describes most of the recent advances performed in this field. Emphasis will be given to luminescent, photochromic, NLO and plasmonic properties. As an outlook we show that the controlled coupling between plasmonics and luminescence is opening a land of opportunities in the field of “Hybrid‐Optics”.

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“…1,2 Gain measurements, broadband lasing, and frequency tuning have been performed with a liquid-dye laser or a frequencydoubled YAG laser as the pump source. [3][4][5] Our group has studied XeF-laser-induced emission properties of 10 dyes in a sol-gel silica matrix that covers the spectral range from 400 to 800 nm. 6,7 Most of the recent studies on dye-doped sol-gel lasers has been with the green-to-red spectral regions because pumping can be provided conventiently with frequency-doubled Nd:YAG lasers at 532 nm.…”

mentioning

confidence: 99%

“…In the laser experiments, such samples were used without their further polishing. The bulk density of the samples is 1.42 g@cm 3 . Optically, the undoped silica slabs show excellent UV transmission characteristics 1Fig.…”

mentioning

confidence: 99%

Sol-gel silica laser tunable in the blue

Lam

Wong

1995

Appl. Opt.

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Doped and undoped silica slabs were fabricated through the use of the sol-gel technique. Extended UV transmission was observed for HCl-catalyzed sol-gel silica. Under transverse pumping with a XeCl laser, narrow-linewidth 1,0.9-nm2 laser oscillation from silica slabs doped with coumarin 460 1C4602 was achieved in a grating-resonator cavity configured in the grazing-indicence geometry. Tuning of the C460-doped silica laser extended from 468 to 494 nm. The conversion efficiency of the narrow-linewidth blue laser was 5.5%.Dye-doped inorganic matrixes derived through the sol-gel route-a new glass-making technologyconstitute a new class of tunable solid-state laser materials that offer tuning capabilities ranging from the UV to the near infrared. Previously, polymeric materials such as poly1methylmethacrylate2 1PMMA2 and modified PMMA 1MPMMA2 have been used with some success as host materials for organic dyes. Because of the low temperatures that are employed during the sol-gel process, organic dopants, which will otherwise be destroyed in conventional glassforming processes, can be introduced into sol-gel glasses to serve as optically active centers. In view of the many potentials of dye-doped sol-gel-derived glasses, research interest regarding this class of tunable solid-state-laser materials has been considerable. Rhodamine-and coumarin-doped silicates have been characterized spectroscopically and the mechanical properties ascertained. 1,2 Gain measurements, broadband lasing, and frequency tuning have been performed with a liquid-dye laser or a frequencydoubled YAG laser as the pump source. [3][4][5] Our group has studied XeF-laser-induced emission properties of 10 dyes in a sol-gel silica matrix that covers the spectral range from 400 to 800 nm. 6,7 Most of the recent studies on dye-doped sol-gel lasers has been with the green-to-red spectral regions because pumping can be provided conventiently with frequency-doubled Nd:YAG lasers at 532 nm. 8 Recently, Ferrer et al. 9 also reported having lased dye-doped PMMA in the blue-green range. Applications in fields like optical storage, underwater communication, etc., however, call for efficient tunable lasers in the blue. Excimer lasers in the UV are powerful pump sources for liquid-dye lasers. 10 They are in fact most useful when one pumps dyes in the blueto-UV spectral regions. Silica glass formed by means of the sol-gel route, however, usually transmits poorly in the UV. Porous sol-gel silica glass supplied by a commercial vendor 1Geltech, Alachua, Fla.2, for instance, has UV cutoffs that vary from 300 to 500 nm, depending on the pore sizes. Hence, excimer-laser pumping of dye-doped sol-gel glass that exhibits poor UV transmission could lead to a shortened of laser lifetime and eventually to the destruction of the sample. When HCl was used as the catalyst during the sol-gel process, UV transmission of the undoped sol-gel silica was found to extend down to 260 nm, which thus permitted safe XeCl-laser pumping at 308 nm. 11 Wideband tuning of silica slabs that were do...

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A new solid-state tunable laser in the visible

Cited by 124 publications

References 8 publications

Transparent Organic/Inorganic Hybrid Gels: A Classification Scheme

Transparent Organic/Inorganic Hybrid Gels: A Classification Scheme

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Sol-gel silica laser tunable in the blue

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