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Optical gain and photo-bleaching of organic dyes, quantum dots, perovskite nanoplatelets and nanodiamonds
ID Mahendran, Vellaichamy (Avtor), ID Škarabot, Miha (Avtor), ID Muševič, Igor (Avtor)

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Izvleček
Optical gain and resistance against photo-bleaching are key material parameters for practical applications in microlasers and microphotonics. Here, we present studies of optical amplification and photo-bleaching in a wide range of optical gain materials, including fluorescent dyes, quantum dots and rods, organic and inorganic room temperature polaritons, and nanodiamonds with emission range from 430 to 680 nm. We used amplified spontaneous emission (ASE) for each material to measure the optical gain. Robustness against photo-bleaching was determined by measuring the intensity of spontaneous emission of the material as a function of the number of excitation femtosecond pulses (10$^6$–10$^{10}$) at various excitation energy densities. We show that pyrromethene laser dyes are the best organic emitters in terms of low excitation energy and good optical gain, whereas solid-state polariton materials are better in terms of high optical gain and stability. We found that all organic and inorganic optical gain materials bleach completely after 10$^6$–10$^9$ illumination pulses with typical 0.1–0.6 GW/cm$^2$ peak power density, with an exception of nanodiamonds. We show that nanodiamonds are the only optical gain material that shows no photo-bleaching beyond the 10$^{10}$ excitation pulses of 300 fs pulse duration and with 0.16 GW/cm$^2$ peak power density.

Jezik:Angleški jezik
Ključne besede:optical gain, photostability, dyes, anthracene, nanodiamonds, quantum dots, quantum rods
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FMF - Fakulteta za matematiko in fiziko
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2023
Št. strani:Str. 935-956
Številčenje:Vol. 50, no. 6
PID:20.500.12556/RUL-152327 Povezava se odpre v novem oknu
UDK:535
ISSN pri članku:1366-5855
DOI:10.1080/02678292.2023.2188614 Povezava se odpre v novem oknu
COBISS.SI-ID:147822851 Povezava se odpre v novem oknu
Datum objave v RUL:20.11.2023
Število ogledov:1129
Število prenosov:52
Metapodatki:XML DC-XML DC-RDF
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Gradivo je del revije

Naslov:Liquid crystals
Skrajšan naslov:Liq. cryst.
Založnik:Taylor & Francis
ISSN:1366-5855
COBISS.SI-ID:18299943 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:optična ojačitev, fotostabilnost, barvila, antracen, diamantni nanodelci, kvantne pike, kvantne palčke

Projekti

Financer:EC - European Commission
Program financ.:H2020
Številka projekta:884928
Naslov:Light-operated logic circuits from photonic soft-matter
Akronim:LOGOS

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