Compact solid-state organic laser with fine and broadband wavelength tunability

Taguchi, Marie; Higase, Youtaro; Yamashita, Ken

doi:10.1364/oe.27.035548

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…The realization of a solid-state medium exhibiting a broadband optical gain is highly desired not only for non-linear biomarkers but also for various optical sensing applications. [32][33][34][35][36][37] In this study, we demonstrate optical amplifications for broadband emission of solid-state film embedding GQDs. The emission wavelengths of GQDs synthesized by microwaveassisted hydrothermal (MAH) method are widely distributed in the visible wavelength region.…”

Section: Broadband Optical Amplification Of Waveguide Cut-off Mode In...mentioning

confidence: 99%

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Broadband Optical Amplification of Waveguide Cut‐Off Mode in Polymer Waveguide Doped with Graphene Quantum Dots

Nagafusa

Hara

Nishio

et al. 2022

Advanced Optical Materials

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Section: Broadband Optical Amplification Of Waveguide Cut-off Mode In...mentioning

confidence: 99%

“…The realization of a solid‐state medium exhibiting a broadband optical gain is highly desired not only for non‐linear biomarkers but also for various optical sensing applications. [ 32–37 ]…”

Section: Introductionmentioning

confidence: 99%

Broadband Optical Amplification of Waveguide Cut‐Off Mode in Polymer Waveguide Doped with Graphene Quantum Dots

Nagafusa

Hara

Nishio

et al. 2022

Advanced Optical Materials

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A polymer film with ultra-broadband optical gain characteristics

Hara

Higase

Taguchi

et al. 2020

Applied Physics Letters

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Miniaturization of the tunable laser equipment is an important factor for further development in various optoelectronic technologies. To realize the compact tunable laser devices, an optical gain medium having a broadband optical gain characteristic is required. In this study, we propose a promising strategy for preparing an optical gain film that exhibits a ∼250 nm gain bandwidth in the visible wavelength region. This film consists of a polymer matrix co-doped with organic luminescent molecules that form a complex of the excited state, i.e., exciplex. The exciplex state can co-exist with the monomolecular exciton state, leading to broadband (400–650 nm) optical gain with a large Stokes shift. Optically pumped lasing action is also possible when the film is combined with an optical resonator. This strategy would be useful for developing a compact tunable laser device without active medium replacement.

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Simultaneously improving the quality factor and outcoupling efficiency of organic light-emitting field-effect transistors with planar microcavity

gong¹,

Zhang²,

He³

et al. 2023

Opt. Express

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Organic light-emitting field-effect transistors (OLEFETs) are regarded as an ideal device platform to achieve electrically pumped organic semiconductor lasers (OSLs). However, the incorporation of a high-quality resonator into OLEFETs is still challenging since the process usually induces irreparable deterioration to the electric-related emission performance of the device. We here propose a dual distributed Bragg reflector (DBR)-based planar microcavity, which is verified to be highly compatible with the OLEFETs. The dual DBR planar microcavity shows the great advantage of simultaneously promoting the quality (Q) factor and outcoupling efficiency of the device due to the reduced optical loss. As a result, a moderately high Q factor of ∼160, corresponding to EL spectrum linewidth as narrow as 3.2 nm, concomitantly with high outcoupling efficiency (∼7.1%) has been successfully obtained. Our results manifest that the dual DBR-based planar microcavity is a promising type of resonator, which might find potential applications in improving the spectra and efficiency performance of OLEFETs as well as in OLEFET-based electrically pumped OSLs.

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Compact solid-state organic laser with fine and broadband wavelength tunability

Cited by 3 publications

References 25 publications

Broadband Optical Amplification of Waveguide Cut‐Off Mode in Polymer Waveguide Doped with Graphene Quantum Dots

Broadband Optical Amplification of Waveguide Cut‐Off Mode in Polymer Waveguide Doped with Graphene Quantum Dots

A polymer film with ultra-broadband optical gain characteristics

Simultaneously improving the quality factor and outcoupling efficiency of organic light-emitting field-effect transistors with planar microcavity

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