Room temperature deep-UV optical gain has been demonstrated in AlGaN/AlN multiple quantum wells structure with strong band-structure potential fluctuations grown by Molecular Beam Epitaxy. A maximum net modal gain of 118 cm-1 has been measured and the transparency threshold of 5 µJ/cm2 was experimentally determined. Amplified Spontaneous Emission results strongly TE-polarized.
This work has been funded by DARPA – Defense Advanced Research Projects Agency CMUVT Program under subcontract from Photon Systems Inc. (2011, March – 2012, March) and performed at Boston University.
Publication output
- Deep-UV optical gain in AlGaN-based graded-index separate confinement heterostructure
E. F. Pecora, H. Sun, L. Dal Negro, T. D. Moustakas
Optical Materials Express 5, 809 (2015) - Development of AlGaN-based GRINSCH deep UV emitters by Molecular Beam Epitaxy
H. Sun, J. Woodward, J. Yin, A. Moldawer, E. F. Pecora, A. Yu. Nikiforov, L. Dal Negro, R. Paiella, K. Ludwig Jr., D. J. Smith, T. D. Moustakas
Journal of Vacuum Science and Technology B 31, 03C117 (2013) - Sub-250nm light emission and optical gain in AlGaN materials
E. F. Pecora, W. Zhang, A. Yu. Nikiforov, J. Yin, R. Paiella, L. Dal Negro, T. D. Moustakas
Journal of Applied Physics 113, 013106 (2013) - Polarization Properties of Deep-UV Optical Gain in Al-rich AlGaN Structures
E. F. Pecora, W. Zhang, J. Yin, R. Paiella, L. Dal Negro, T. D. Moustakas
Applied Physics Express 5, 032103 (2012) - Sub-250nm room-temperature optical gain from AlGaN/AlN multiple quantum wells with strong band-structure potential fluctuations
E. F. Pecora, W. Zhang, A. Nikiforov, L. Zhou, D. Smith, J. Yin, R. Paiella, L. Dal Negro, T. D. Moustakas
Applied Physics Letters, 100, 061111 (2012)
Conference proceedings
- Sub-250nm room temperature optical gain from AlGaN materials with strong compositional fluctuations
E. F. Pecora, W. Zhang, H. Sun, A. Yu. Nikiforov, J. Yin, R. Paiella, T. D. Moustakas, L. Dal Negro
Bulletin of the American Physical Society, vol. 58, V1.00111 - Sub-250nm room temperature optical gain from AlGaN/AlN multiple quantum wells structures
E. F. Pecora, W. Zhang, L. Zhou, D. J. Smith, J. Yin, R. Paiella, L. Dal Negro, T. D. Moustakas
CLEO: Science and Innovations, CTh3D, CTh3D.5 - Sub-250nm room-temperature optical gain from AlGaN/AlN multiple quantum dot structures
E. F. Pecora, W. Zhang, L. Zhou, D. J. Smith, J. Yin, R. Paiella, L. Dal Negro, T. D. Moustakas
Bulletin of the American Physical Society, vol. 57 - Room temperature low threshold stimulated emission of electron beam-pumped AlGaN-based deep UV laser structures emitting below 250 nm
A. Nikiforov, W. Zhang, J. Woodward, J. Yin, E. Pecora, L. Zhou, L. Dal Negro, R. Paiella, D. Smith, T. Moustakas, A. Moldawer
Bulletin of the American Physical Society, vol. 57
Conference participation
- APS March Meeting 2013 – Baltimore, MD (USA) March 18 – 22, 2013 Poster presentation, Session V1
- CLEO Conference 2012 – San Jose, CA (USA) May 6 – 11, 2012 Oral presentation, Session “Low-dimensional Photonic Structures”
- APS March Meeting 2012 – Boston, MA (USA) February 27 – March 2, 2012 Oral presentation, Session L28