All-optical remote sensing of city gas through CH4 gas absorption employing a low-loss optical fiber link and an InGaAsP light-emitting diode in the near-infrared region

1987 ◽  
Vol 43 (2) ◽  
pp. 79-83 ◽  
Author(s):  
M. C. Alarcon ◽  
H. Ito ◽  
H. Inaba
2020 ◽  
Author(s):  
Ajay Tripathi ◽  
Rajesh Rawat ◽  
Archana Tiwari

<p>We report simple and inexpensive technique using several sheets of white paper for filtering the blue and non-blue radiation of a white light emitting diode source in the transmission mode. We visibly illustrate successful rejection of specific energy of white light by the filtering papers through absorption mechanism where weak transmission of blue and red radiations are observed. In addition, photoluminescence arising from the papers in near infrared region is also presented while using the white light excitation. Owing to the presence of different whitening agents in the papers, selective absorption and divergent coloured emission from the sheets are observed.</p>


2020 ◽  
Author(s):  
Ajay Tripathi ◽  
Rajesh Rawat ◽  
Archana Tiwari

<p>We report simple and inexpensive technique using several sheets of white paper for filtering the blue and non-blue radiation of a white light emitting diode source in the transmission mode. We visibly illustrate successful rejection of specific energy of white light by the filtering papers through absorption mechanism where weak transmission of blue and red radiations are observed. In addition, photoluminescence arising from the papers in near infrared region is also presented while using the white light excitation. Owing to the presence of different whitening agents in the papers, selective absorption and divergent coloured emission from the sheets are observed.</p>


2020 ◽  
Author(s):  
Ajay Tripathi ◽  
Rajesh Rawat ◽  
Archana Tiwari

<p>We report simple and inexpensive technique using several sheets of white paper for filtering the blue and non-blue radiation of a white light emitting diode source in the transmission mode. We visibly illustrate successful rejection of specific energy of white light by the filtering papers through absorption mechanism where weak transmission of blue and red radiations are observed. In addition, photoluminescence arising from the papers in near infrared region is also presented while using the white light excitation. Owing to the presence of different whitening agents in the papers, selective absorption and divergent coloured emission from the sheets are observed.</p>


CrystEngComm ◽  
2021 ◽  
Author(s):  
Mingming Jiang ◽  
Fupeng Zhang ◽  
Kai Tang ◽  
Peng Wan ◽  
Caixia Kan

Achieving electrically-driven exciton-polaritons has drawn substantial attention toward developing ultralow-threshold coherent light sources, containing polariton laser devices and high-performance light-emitting diodes (LEDs). In this work, we demonstrate an electrically driven...


2021 ◽  
pp. 103879
Author(s):  
Hyung-Joo Lee ◽  
Gwang-Hoon Park ◽  
Jin-Su So ◽  
Choong-Hun Lee ◽  
Jae-Hoon Kim ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document