Random temporal laser speckles for the robust measurement of sub-microsecond photoluminescence decay

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F20%3A00541100" target="_blank" >RIV/61389021:_____/20:00541100 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/20:00541100 RIV/46747885:24220/20:00008503

Výsledek na webu

<a href="https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-8-12363&id=429918" target="_blank" >https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-8-12363&id=429918</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/OE.382811" target="_blank" >10.1364/OE.382811</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Random temporal laser speckles for the robust measurement of sub-microsecond photoluminescence decay

Popis výsledku v původním jazyce

Time-resolved photoluminescence (PL) is commonly used to track dynamics in a broad range of materials. Thus, the search for simplification of the acquisition of PL kinetics attracts continuous attention. This paper presents a new robust and straightforward approach to the measurement of PL decay, which is based on randomly fluctuating excitation intensity. The random excitation waveform is attained by using laser speckles generated on a rotating diffuser. Owing to this, the presented technique is able to utilize any coherent excitation source without the necessity to generate short pulses or to controllably modulate the light. PL decay can be computationally reconstructed from the Fourier image of the PL trace. The paper demonstrates the performance of the method, which is able to acquire sub-microsecond dynamics as the impulse response function reaches 300 ns. The reconstructed PL decays were compared to streak camera measurements to verify the method. Finally, potential limitations and applications of the technique are discussed.

Název v anglickém jazyce

Random temporal laser speckles for the robust measurement of sub-microsecond photoluminescence decay

Popis výsledku anglicky

Time-resolved photoluminescence (PL) is commonly used to track dynamics in a broad range of materials. Thus, the search for simplification of the acquisition of PL kinetics attracts continuous attention. This paper presents a new robust and straightforward approach to the measurement of PL decay, which is based on randomly fluctuating excitation intensity. The random excitation waveform is attained by using laser speckles generated on a rotating diffuser. Owing to this, the presented technique is able to utilize any coherent excitation source without the necessity to generate short pulses or to controllably modulate the light. PL decay can be computationally reconstructed from the Fourier image of the PL trace. The paper demonstrates the performance of the method, which is able to acquire sub-microsecond dynamics as the impulse response function reaches 300 ns. The reconstructed PL decays were compared to streak camera measurements to verify the method. Finally, potential limitations and applications of the technique are discussed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Optics Express

ISSN

1094-4087

e-ISSN

—

Svazek periodika

28

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

12363-12372

Kód UT WoS článku

000526518300139

EID výsledku v databázi Scopus

2-s2.0-85083317726