Amplified spontaneous emission from cyano substituted oligo(p-phenylene vinylene) single crystal with very high photoluminescent efficiency

2007 ◽  
Vol 90 (14) ◽  
pp. 141110 ◽  
Author(s):  
Weijie Xie ◽  
Yupeng Li ◽  
Feng Li ◽  
Fangzhong Shen ◽  
Yuguang Ma
Keyword(s):  
Single Crystal ◽  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Phenylene Vinylene ◽  
Very High

scholarly journals Amplified Spontaneous Emission and Optical Gain in Organic Single Crystal Quinquethiophene

Crystals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 609 ◽  
Author(s):  
Muhammad Zeb ◽  
Muhammad Tahir ◽  
Fida Muhammad ◽  
Suhana Mohd Said ◽  
Mohd Faizul Mohd Sabri ◽  
...  
Keyword(s):  
Single Crystal ◽  
Spontaneous Emission ◽  
Threshold Energy ◽  
Pump Energy ◽  
Optical Gain ◽  
Amplified Spontaneous Emission ◽  
Stimulated Emission ◽  
Excitation Wavelength ◽  
Optical Amplification ◽  
Organic Single Crystal

In this paper, we report optical characteristics of an organic single crystal oligomer 5,5⁗-diphenyl-2,2′:5′,2″:5″,2‴:5‴,2⁗-quinquethiophene (P5T). P5T crystal is a thiophene/phenylene co-oligomer that possesses better charge mobility as well as photoluminescence quantum efficiency (PLQE) as compared to other organic materials. Stimulated emission in P5T is investigated via amplified spontaneous emission (ASE) measurements within broad pump energies ranging from 35.26 to 163.34 µJ/cm2. An Nd-YAG femtosecond-tunable pulsed laser is used as a pump energy source for the ASE measurements of P5T crystals at an excitation wavelength of 445 nm. The ASE spectra exhibit optical amplification in P5T crystals at a 625 nm peak wavelength with a lower threshold energy density (Eth) ≈ 52.64 μJ/cm2. P5T also demonstrates higher optical gain with a value of 72 cm−1, that is calculated by using the variable stripe-length method. The value of PLQE is measured to be 68.24% for P5T. This study proposes potential applications of P5T single crystals in organic solid state lasers, photodetectors, and optical amplifiers.

Amplified spontaneous emission and optical gain spectra from stilbenoid and phenylene vinylene derivative model compounds

1999 ◽  
Vol 86 (11) ◽  
pp. 6155-6159 ◽  
Author(s):  
Kevin P. Kretsch ◽  
Colin Belton ◽  
Stephen Lipson ◽  
Werner J. Blau ◽  
Fryad Z. Henari ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Optical Gain ◽  
Amplified Spontaneous Emission ◽  
Phenylene Vinylene ◽  
Model Compounds ◽  
Gain Spectra

Dual amplified spontaneous emission and laser action from a model oligo(phenylene vinylene): comparison with the corresponding polymer

2004 ◽  
Vol 27 (3) ◽  
pp. 503-507 ◽  
Author(s):  
M. Fakis ◽  
I. Polyzos ◽  
G. Tsigaridas ◽  
V. Giannetas ◽  
P. Persephonis ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Laser Action ◽  
Amplified Spontaneous Emission ◽  
Phenylene Vinylene

scholarly journals Superlinear emission in bare perovskite: amplified spontaneous emission in disordered film versus single crystal lasing

2017 ◽  
Vol 4 ◽  
pp. S12-S18
Author(s):  
F. Biccari ◽  
A. Ristori ◽  
F. Gabelloni ◽  
C. Francioni ◽  
F. La China ◽  
...  
Keyword(s):  
Single Crystal ◽  
Spontaneous Emission ◽  
Amplified Spontaneous Emission

Amplified Spontaneous Emission from the Oriented NK-2014-Doped Nematic Liquid Crystal Layer

2012 ◽  
Vol 554-556 ◽  
pp. 23-26 ◽  
Author(s):  
Zhao Hui Jin ◽  
Ying Guo ◽  
Hua Jing Gao ◽  
Kazuo Kasatani
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Spontaneous Emission ◽  
Near Infrared ◽  
Organic Molecules ◽  
Amplified Spontaneous Emission ◽  
Cyanine Dye ◽  
Nematic Liquid Crystal Layer ◽  
Visible Wavelengths ◽  
Very High

Although lasing has been observed in the solid state for numerous organic molecules emitting at visible wavelengths, this is few case in the infrared. We show amplified spontaneous emission (ASE) in the near infrared (913-930 nm) from the layer of a cyanine dye-doped 4-cyano-4'-pentylbiphenyl (5CB) for laser power above 0.08 GW/cm2, the layer was prepared with the solution of 1,1',3,3,3',3'- hexamethyl-4,4',5,5'-di-benzo-2,2'-indotricarbocyanine perchlorate (NK-2014) dissolved in 5CB. Oriented NK-2014 molecules in nematic liquid crystal (NLC) must have very high amplified spontaneous emission efficiency.

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