Femtosecond superradiance in multiple-section InGaN/GaN quantum well laser structures

Details Femtosecond superradiance in multiple-section InGaN/GaN quantum well laser structures Femtosecond superradiance in multiple-section InGaN/GaN quantum well laser structures

2011-03-28

arxiv.org/abs/1103.5507v2

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures; v2 : misprints in 2-d Eg.(6) and 2-d Eq.(10) are corrected; v2 is submitted to PRL

Scientific paper

We analyze theoretically a possibility of the superradiant emission (SR) in GaN-based quantum well (QW) laser heterostructures. Our model is based on travelling wave Maxwell-Bloch equations predicts building up of macroscopic coherences in the ensemble of carriers in the QWs. We show that SR is covered by the Ginzburg-Landau equation for phase transition to coherent matter state. The generation of superradiant pulses as short as 500 fs at peak powers of over 200 W has been predicted for InGaN/GaN heterostructure QWs with the peak emission in the blue/violet wavelength range.

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