A microchip-laser-pumped DFB-polymer-dye laser

Voss, T.; Scheel, Dirk; Schade, Wolfgang

doi:10.1007/s003400100619

Cited by 51 publications

(24 citation statements)

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“…Lasing in such hybrid system was successfully demonstrated under various pumping sources: micro-chip lasers [19], inorganic laser diodes [20,21], and even incoherent LEDs [22]. Indirect electrical excitation requires to carefully examine optical pumping to take into account the specificities of these new pump sources and of organic materials.…”

Section: Introductionmentioning

confidence: 99%

Gain properties of dye-doped polymer thin films

et al. 2015

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Hybrid pumping appears as a promising compromise in order to reach the much coveted goal of an electrically pumped organic laser. In such configuration the organic material is optically pumped by an electrically pumped inorganic device on chip. This engineering solution requires therefore an optimization of the organic gain medium under optical pumping. Here, we report a detailed study of the gain features of dye-doped polymer thin films. In particular we introduce the gain efficiency K, in order to facilitate comparison between different materials and experimental conditions. The gain efficiency was measured with various setups (pump-probe amplification, variable stripe length method, laser thresholds) in order to study several factors which modify the actual gain of a layer, namely the confinement factor, the pump polarization, the molecular anisotropy, and the re-absorption. For instance, for a 600 nm thick 5 wt% DCM doped PMMA layer, the different experimental approaches give a consistent value K ≃ 80 cm.MW −1 . On the contrary, the usual model predicting the gain from the characteristics of the material leads to an overestimation by two orders of magnitude, which raises a serious problem in the design of actual devices. In this context, we demonstrate the feasibility to infer the gain efficiency from the laser threshold of well-calibrated devices. Besides, temporal measurements at the picosecond scale were carried out to support the analysis.

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Section: Introductionmentioning

confidence: 99%

Gain properties of dye-doped polymer thin films

et al. 2015

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“…Thin films of the active material are either obtained by processing solutions of conjugated polymers [8,9] or evaporating small molecules [10,11] on top of the substrates with surface gratings. Continuous tunability of such solid-state organic DFB lasers has already been demonstrated with several approaches such as holographic dynamic DFB gratings [12], stretchable DFB lasers [13][14][15][16][17], a wedge-shaped film of either the gain material layer [18] or an intermediate high-index layer [19], a continuously changing grating period [20], optofluidic tuning [21], tuning the temperature of the device [22] or DFB lasers that incorporate liquid crystals [23,24]. Furthermore, the general applicability of a wedge-shaped organic DFB laser using evaporated small molecules with a continuous tuning range of up to 25 nm has been demonstrated in spectroscopic and laser-induced fluorescence measurements [25,26].…”

Section: Introductionmentioning

confidence: 99%

Continuously tunable solution-processed organic semiconductor DFB lasers pumped by laser diode

Klinkhammer¹,

Liu²,

Huska³

et al. 2012

Opt. Express

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Abstract:The fabrication and characterization of continuously tunable, solution-processed distributed feedback (DFB) lasers in the visible regime is reported. Continuous thin film thickness gradients were achieved by means of horizontal dipping of several conjugated polymer and blended small molecule solutions on cm-scale surface gratings of different periods. We report optically pumped continuously tunable laser emission of 13 nm in the blue, 16 nm in the green and 19 nm in the red spectral region on a single chip respectively. Tuning behavior can be described with the Bragg-equation and the measured thickness profile. The laser threshold is low enough that inexpensive laser diodes can be used as pump sources. Weimann, J. Wang, and P. Hinze, "Laser threshold reduction in an all-spiro guest-host system," Appl. Phys. Lett. 85(10), 1659-1661 (2004

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“…Tunability was achieved by rotating the prism, thereby changing the interfering angle of the two pump beams that formed the DFB grating. The emission wavelength could also be fine-tuned over a range of about 1 nm by changing the temperature of the active layers from 20 to 40°C [138]. The emission wavelength of photonic crystal band edge lasers based on the SU-8 polymer, doped with the laser dye PM597 was tuned by cladding the laser with fluids of differing refractive indices.…”

Section: Dye-doped Polymer Amplifiersmentioning

confidence: 99%

Organic solid‐state integrated amplifiers and lasers

Grivas

Pollnau

2012

Laser & Photonics Reviews

211

202

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Solid-state organic amplifiers and lasers are attractive for hybrid integration due to their compatibility with different material platforms, straightforward processing, and possibility to optimize easily their optical and electronic properties by molecular engineering. Advances in the gain medium design and synthesis in combination with new resonator architectures led to tremendous improvements in temporal and spectral properties, lifetime stability, gains produced and operating threshold powers, which triggered interest in their use for a broad range of integrated photonic applications. In this contribution, the current state-of-the-art in the field of organic solid-state amplifiers and lasers is reviewed from the aspects of fabrication technology, gain materials, and device performance. Furthermore, examples of the progress of this technology from a laboratory curiosity to one that demonstrates practical integrated photonic applications are highlighted. An outlook is also provided on research areas and applications that are likely to shape further developments of this technology. (Figure reprinted from [296],

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A microchip-laser-pumped DFB-polymer-dye laser

Cited by 51 publications

References 0 publications

Gain properties of dye-doped polymer thin films

Gain properties of dye-doped polymer thin films

Continuously tunable solution-processed organic semiconductor DFB lasers pumped by laser diode

Organic solid‐state integrated amplifiers and lasers

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