Subpicosecond pulses from a gain-switched polymer distributed feedback laser

Goossens, M.; Ruseckas, Arvydas; Turnbull, Graham A.; Samuel, Ifor D. W.

doi:10.1063/1.1767952

Cited by 27 publications

(23 citation statements)

References 18 publications

(6 reference statements)

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“…The output pulse shows a peak at about 6 ps after the pump pulse and has a duration of ∼ 10 ps (FWHM). Similar time dynamics have been reported in DFB lasers using other conjugated polymers [17,18] except that the Red F laser output pulses are of longer duration than is typical. With an increase in pump energy, the temporal shape of the lasing pulse and its build-up time remained largely unaffected, an observation in contrast to the results of previous studies.…”

supporting

confidence: 54%

“…With an increase in pump energy, the temporal shape of the lasing pulse and its build-up time remained largely unaffected, an observation in contrast to the results of previous studies. [17,18] This can be explained by the fact that only Figure 2. Streak traces of a) the pump pulse (dotted line) and the DFB laser output (solid line) in a 2 nm window centred at 692 nm when no control pulse is applied, b) the frequency doubled control pulse (dashed line) and the DFB laser output (dotted line) in the same 2 nm window at 692 nm when switched off by the control pulse.…”

mentioning

confidence: 91%

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Wavelength Conversion from Silica to Polymer Optical Fibre Communication Wavelengths via Ultrafast Optical Gain Switching in a Distributed Feedback Polymer Laser

et al. 2007

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supporting

confidence: 54%

mentioning

confidence: 91%

Wavelength Conversion from Silica to Polymer Optical Fibre Communication Wavelengths via Ultrafast Optical Gain Switching in a Distributed Feedback Polymer Laser

et al. 2007

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“…Amongst the various feedback mechanisms implemented distributed feedback (DFB) seems to be the prevailing one in organic semiconductor lasers, having produced sources that exhibit low loss and low operating thresholds. Studies have also been reported on the laser dynamics of organic DFB sources [160,161]. In this scheme, feedback is provided by a periodic variation in refractive index, produced by encoding Bragg gratings in the active layers.…”

Section: Laser and Photonics Reviewsmentioning

confidence: 99%

“…19), which is the shortest pulsewidth emitted by any organic semiconductor laser reported to date [161]. The gain medium of Figure 19 Laser pulse dynamics from a DFB source pumped with 100-fs long pulses for two different excitation spot sizes.…”

Section: Review Articlementioning

confidence: 99%

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Organic solid‐state integrated amplifiers and lasers

Grivas

Pollnau

2012

Laser & Photonics Reviews

206

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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An Organic Laser Dye having a Small Singlet‐Triplet Energy Gap Makes the Selection of a Host Material Easier

Karunathilaka

Balijapalli

Senevirathne

et al. 2020

Adv Funct Materials

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Quenching of singlets by long-lived triplets is a serious issue for lasing from organic laser dyes, especially under long pulse excitation duration. As a strategy to scavenge or manage unnecessary triplets, an organic laser dye is dispersed into a host material having high singlet and low triplet energy levels [a large singlet-triplet energy gap (ΔE ST )]. However, finding such a host material having a triplet scavenging capability is limited. In this study, we synthesized an organic laser dye, 2,6-dicyano-1,1-diphenyl-λ 5 σ 4 -phosphinine (DCNP), having a small ΔE ST of ~0.44 eV, and thus we were able to employ 4-4΄-bis[(N-carbazole)styryl] biphenyl (BSBCz) as a triplet scavenging host, i.e., the triplets formed on DCNP are easily transferred to BSBCz. A 1 wt.%-DCNP-doped BSBCz film was formed on a mixed-order distributed feedback grating, showed lasing with a low threshold value of ~0.86 µJ cm −2 and a FWHM of ~0.5 nm. Because of the suppressed singlet-triplet annihilation, we demonstrated DCNP-based laser devices operating under continuous-wave operation, with a low threshold of 72 W cm −2 and a long laser half-lifetime of ~3 min. Our results This article is protected by copyright. All rights reserved.3 demonstrated a possibility of the wider selection of host materials, easing a material design strategy of fabricating high-performance laser devices in future.Received: ((will be filled in by the editorial staff))Revised: ((will be filled in by the editorial staff)) Published online: ((will be filled in by the editorial staff))

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Subpicosecond pulses from a gain-switched polymer distributed feedback laser

Abstract: Low threshold distributed feedback lasers fabricated from blends of conjugated polymers: Reduced losses through Förster transfer

Cited by 27 publications

References 18 publications

Wavelength Conversion from Silica to Polymer Optical Fibre Communication Wavelengths via Ultrafast Optical Gain Switching in a Distributed Feedback Polymer Laser

Wavelength Conversion from Silica to Polymer Optical Fibre Communication Wavelengths via Ultrafast Optical Gain Switching in a Distributed Feedback Polymer Laser

Organic solid‐state integrated amplifiers and lasers

An Organic Laser Dye having a Small Singlet‐Triplet Energy Gap Makes the Selection of a Host Material Easier

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