scholarly journals Laser action in nanowires: Observation of the transition from amplified spontaneous emission to laser oscillation

2008 ◽  
Vol 93 (5) ◽  
pp. 051101 ◽  
Author(s):  
Mariano A. Zimmler ◽  
Jiming Bao ◽  
Federico Capasso ◽  
Sven Müller ◽  
Carsten Ronning
Keyword(s):  
Spontaneous Emission ◽  
Laser Action ◽  
Amplified Spontaneous Emission ◽  
Laser Oscillation

From amplified spontaneous emission to laser oscillation:?dynamics in a short-cavity polymer laser

1999 ◽  
Vol 24 (24) ◽  
pp. 1847 ◽  
Author(s):  
S. A. van den Berg ◽  
R. H. van Schoonderwoerd den Bezemer ◽  
H. F. M. Schoo ◽  
G. W. ’t Hooft ◽  
E. R. Eliel
Keyword(s):  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Laser Oscillation ◽  
Oscillation Dynamics

TPD-BASED BLUE ORGANIC LASERS

2004 ◽  
Vol 13 (03n04) ◽  
pp. 621-626 ◽  
Author(s):  
MARÍA A. DÍAZ-GARCÍA ◽  
EVA M. CALZADO ◽  
JOSÉ M. VILLALVILLA ◽  
PEDRO G. BOJ ◽  
JOSÉ A. QUINTANA ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Polymer Films ◽  
Organic Molecule ◽  
Laser Action ◽  
Amplified Spontaneous Emission ◽  
Output Intensity ◽  
Hole Transporting ◽  
Length Gain

Laser action at 420 nm is observed in photopumped polymer films of polystyrene (PS) doped with the hole-transporting organic molecule N,N′-bis(3-methylphenyl)-N,N′-dyphenylbenzidine (TPD). Measurements of the dependence of signal on the length of the pump stripe show that the mechanism responsible for the observed spectral collapse is amplified spontaneous emission (ASE). By fitting the evolution of the output intensity at 420 nm with the excitation length, gain coefficients up to 16 cm-1 are measured.

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 Laser Performance of 1% at. Yb : Lu2O3 Ceramic

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Angela Pirri ◽  
Guido Toci ◽  
Matteo Vannini
Keyword(s):  
Pump Power ◽  
Thermal Behavior ◽  
Numerical Simulations ◽  
Spontaneous Emission ◽  
Slope Efficiency ◽  
Thermal Load ◽  
Laser Emission ◽  
Amplified Spontaneous Emission ◽  
Laser Operation ◽  
Laser Oscillation

We present the performance of a laser prototype based on 1% at. Yb : Lu2O3 ceramic, longitudinally pumped in quasi-CW regime at 968 nm. A slope efficiency of 49% with respect to the absorbed pump power was obtained for laser operation at 1032.5 nm. We studied the effects on the laser oscillation due to the reinjection of the residual pump. The thermal behavior of the sample was investigated by means of numerical simulations, accounting for the different thermal load resulting from spontaneous and laser emission. Finally, we report the measured level of the Amplified Spontaneous Emission, which is found to be less than 0.1 mW.

Amplified spontaneous emission and laser action from solutions of substituted p-oligophenylenes

2001 ◽  
Vol 18 (3) ◽  
pp. 351-354 ◽  
Author(s):  
M. Ciaris ◽  
K.G. Gravalos ◽  
E. Stathatos ◽  
P. Lianos
Keyword(s):  
Spontaneous Emission ◽  
Laser Action ◽  
Amplified Spontaneous Emission

Effect of Molecular Morphology on Amplified Spontaneous Emission of Bis-Styrylbenzene Derivatives

2009 ◽  
Vol 21 (40) ◽  
pp. 4034-4038 ◽  
Author(s):  
Ryota Kabe ◽  
Hajime Nakanotani ◽  
Tomo Sakanoue ◽  
Masayuki Yahiro ◽  
Chihaya Adachi
Keyword(s):  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Molecular Morphology

scholarly journals Origin of Intramolecular Low‐Threshold Amplified Spontaneous Emission

2021 ◽  
pp. 2001956
Author(s):  
Qi Wei ◽  
Ruihong Duan ◽  
Qi Zhang ◽  
Linghai Xie ◽  
Ruidong Xia ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Low Threshold
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