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

Xia, Ruidong; Cheung, C.; Ruseckas, Arvydas; Amarasinghe, D.; Samuel, Ifor D. W.; Bradley, Donal D. C.

doi:10.1002/adma.200700256

Cited by 30 publications

(13 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wavelengths of the pump and lasing pulses were 400, and 575 nm, respectively [270]. All-optical switching using a similar mechanism was achieved in lasers based on the conjugated polymer Red-F [271] operating at 692 nm. A control pulse at 1.28 μm (4 ps, 5 KHz) was used for modulation, leading in effect to gain elimination so that the output was just the control pulse.…”

Section: All-optical Switchingmentioning

confidence: 75%

Organic solid‐state integrated amplifiers and lasers

Grivas

Pollnau

2012

Laser & Photonics Reviews

209

202

View full text Add to dashboard Cite

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],

show abstract

Section: All-optical Switchingmentioning

confidence: 75%

Organic solid‐state integrated amplifiers and lasers

Grivas

Pollnau

2012

Laser & Photonics Reviews

209

202

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6] These and other organic gain media can be pumped by compact laser (LD) [7][8][9][10] and lightemit ting (LED) [11,12] diode sources but direct electrical pumping has not been reported yet. Binary blends of conjugated host and guest materials have been used both to enhance LED performance and to reduce optically pumped laser thresholds via efficient exciton generation on the host and/or the guest and rapid hosttoguest Förster resonantenergytransfer (FRET).…”

Section: Introductionmentioning

confidence: 99%

Host Exciton Confinement for Enhanced Förster‐Transfer‐Blend Gain Media Yielding Highly Efficient Yellow‐Green Lasers

Zhang

Liu

Wei

et al. 2018

Adv Funct Materials

View full text Add to dashboard Cite

This paper reports state-of-the-art fluorene-based yellow-green conjugated polymer blend gain media using Förster resonant-energy-transfer from novel blue-emitting hosts to yield low threshold (≤7 kW cm −2 ) lasers operating between 540 and 590 nm. For poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) (15 wt%) blended with the newly synthesized 3,6-bis(2,7-di([1,1′-biphenyl]-4-yl)-9-phenyl-9H-fluoren-9-yl)-9-octyl-9H-carbazole (DBPhFCz) a highly desirable more than four times increase (relative to F8BT) in net optical gain to 90 cm −1 and 34 times reduction in amplified spontaneous emission threshold to 3 µJ cm −2 is achieved. Detailed transient absorption studies confirm effective exciton confinement with consequent diffusionlimited polaron-pair generation for DBPhFCz. This delays formation of host photoinduced absorption long enough to enable build-up of the spectrally overlapped, guest optical gain, and resolves a longstanding issue for conjugated polymer photonics. The comprehensive study further establishes that limiting host conjugation length is a key factor therein, with 9,9-dialkylfluorene trimers also suitable hosts for F8BT but not pentamers, heptamers, or polymers. It is additionally demonstrated that the host highest occupied and lowest unoccupied molecular orbitals can be tuned independently from the guest gain properties. This provides the tantalizing prospect of enhanced electron and hole injection and transport without endangering efficient optical gain; a scenario of great interest for electrically pumped amplifiers and lasers.

show abstract

“…All-optical switching in polyfluorenes [3,4] has been obtained by exploiting the transient absorption of photoinduced charge states. This approach provides a very large and fast modulation but it requires a very strong control signal (in some cases up to 10 times higher than pump intensity).…”

Section: Introductionmentioning

confidence: 99%

Optical Modulation of Amplified Emission in a Polyfluorene–Diarylethene Blend

et al. 2011

View full text Add to dashboard Cite

A novel system for the modulation of amplified emission based on a polyfluorene/diarylethene (namely F8BT/DTP) blend is shown. The high sensitivity of amplified spontaneous emission (ASE) is exploited to achieve efficient emission modulation with a low-intensity control signal. Modulation is then characterized by photoluminescence (PL) lifetime measurements, photocurrent experiments, and density functional theory calculations. This system can also act as a photocurrent switch based on the same principle. This technique may represent a useful tool for fluorescence quenching and sensing as well as find application in organic photonics.

show abstract

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

Cited by 30 publications

References 18 publications

Organic solid‐state integrated amplifiers and lasers

Organic solid‐state integrated amplifiers and lasers

Host Exciton Confinement for Enhanced Förster‐Transfer‐Blend Gain Media Yielding Highly Efficient Yellow‐Green Lasers

Optical Modulation of Amplified Emission in a Polyfluorene–Diarylethene Blend

Contact Info

Product

Resources

About