scholarly journals Polymer Lasing in a Periodic-Random Compound Cavity

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1194 ◽  
Author(s):  
Tianrui Zhai ◽  
Xiaofeng Wu ◽  
Songtao Li ◽  
Shuyan Liang ◽  
Lianze Niu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Distributed Feedback ◽  
Interference Lithography ◽  
Random Laser ◽  
Random Lasing ◽  
Optically Pumped ◽  
Light Emitting ◽  
Grating Structure ◽  
Laser Sources

Simultaneous distributed feedback (DFB) lasing and linear polarized random lasing are observed in a compound cavity, which consists of a grating cavity and a random cavity. The grating cavity is fabricated by interference lithography. A light-emitting polymer doped with silver nanoparticles is spin-coated on the grating, forming a random cavity. DFB lasing and random lasing occur when the periodic-random compound cavity is optically pumped. The directionality and polarization of the random laser are modified by the grating structure. These results can potentially be used to design integrated laser sources.

Realization of optically pumped second‐order GaInN‐distributed‐feedback lasers

1996 ◽  
Vol 69 (14) ◽  
pp. 2068-2070 ◽  
Author(s):  
R. Hofmann ◽  
H.‐P. Gauggel ◽  
U. A. Griesinger ◽  
H. Gräbeldinger ◽  
F. Adler ◽  
...  
Keyword(s):  
Second Order ◽  
Distributed Feedback ◽  
Distributed Feedback Lasers ◽  
Optically Pumped

scholarly journals Holographic Fabrication and Optical Property of Graded Photonic Super-Crystals with a Rectangular Unit Super-Cell

Photonics ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 34 ◽  
Author(s):  
Safaa Hassan ◽  
Oliver Sale ◽  
David Lowell ◽  
Noah Hurley ◽  
Yuankun Lin
Keyword(s):  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Interference Lithography ◽  
Light Modulator ◽  
Light Emitting ◽  
Polarization Effects ◽  
Organic Light ◽  
Super Cell ◽  
Phase Engineering

Recently developed graded photonic super-crystals show an enhanced light absorption and light extraction efficiency if they are integrated with a solar cell and an organic light emitting device, respectively. In this paper, we present the holographic fabrication of a graded photonic super-crystal with a rectangular unit super-cell. The spatial light modulator-based pixel-by-pixel phase engineering of the incident laser beam provides a high resolution phase pattern for interference lithography. This also provides a flexible design for the graded photonic super-crystals with a different ratio of length over the width of the rectangular unit super-cell. The light extraction efficiency is simulated for the organic light emitting device, where the cathode is patterned with the graded photonic super-crystal. The high extraction efficiency is maintained for different exposure thresholds during the interference lithography. The desired polarization effects are observed for certain exposure thresholds. The extraction efficiency reaches as high as 75% in the glass substrate.

Optically-Pumped Lasing in Hybrid Organic-Inorganic Light-Emitting Diodes

2009 ◽  
Vol 19 (13) ◽  
pp. 2130-2136 ◽  
Author(s):  
Myoung Hoon Song ◽  
Dinesh Kabra ◽  
Bernard Wenger ◽  
Richard H. Friend ◽  
Henry J. Snaith
Keyword(s):  
Light Emitting Diodes ◽  
Optically Pumped ◽  
Light Emitting

Electrically pumped random lasing with an onset voltage of sub-3 V from ZnO-based light-emitting devices featuring nanometer-thick MoO3interlayers

Nanoscale ◽  
2015 ◽  
Vol 7 (20) ◽  
pp. 9164-9168 ◽  
Author(s):  
Can-Xing Wang ◽  
Chun-Yan Lv ◽  
Chen Zhu ◽  
Zhi-Fei Gao ◽  
Dong-Sheng Li ◽  
...  
Keyword(s):  
Random Lasing ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Electrically Pumped ◽  
Onset Voltage

Effect of Silver Nanoparticles Deposited on Indium Tin Oxide by Plasma-Assisted Hot-Filament Evaporation on Phosphorescent Organic Light-Emitting Diode Performance

2021 ◽  
pp. 151280
Author(s):  
Abtisam Hasan Hamood Al-Masoodi ◽  
Noor Azrina Talik ◽  
Boon Tong Goh ◽  
Mohd Arif Mohd Sarjidan ◽  
Ahmed H. H. Al-Masoodi ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Hot Filament

scholarly journals Characterization of InGaN/GaN-Based Multi-Quantum Well Distributed Feedback Lasers

1998 ◽  
Vol 537 ◽  
Author(s):  
Daniel Hofstetter ◽  
Robert L. Thornton ◽  
Linda T. Romano ◽  
David P. Bour ◽  
Michael Kneissl ◽  
...  
Keyword(s):  
Ion Beam ◽  
Device Fabrication ◽  
Distributed Feedback ◽  
Coupling Scheme ◽  
Optically Pumped ◽  
Ion Beam Etching ◽  
Measurement Results ◽  
Dfb Laser ◽  
First Time

AbstractWe present a device fabrication technology and measurement results of both optically pumped and electrically injected InGaN/GaN-based distributed feedback (DFB) lasers operated at room temperature. For the optically pumped DFB laser, we demonstrate a complex coupling scheme for the first time, whereas the electrically injected device is based on normal index coupling. Threshold currents as low as 1. 1 A were observed in 500 μm long and 10 μm wide devices. The 3rd order grating providing feedback was defined holographically and dry-etched into the upper waveguiding layer by chemically-assisted ion beam etching. Even when operating these lasers considerably above threshold, a spectrally narrow emission (3.5 Å) at wavelengths around 400 nm was seen.

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