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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 12 — Jun. 15, 2014
  • pp: 3555–3558

Efficient blue light emission from In0.16Ga0.84N/GaN multiple quantum wells excited by 2.48-μm femtosecond laser pulses

Mao-Hui Yuan, Hui Li, Jian-Hua Zeng, Hai-Hua Fan, Qiao-Feng Dai, Sheng Lan, and Shu-Ti Li  »View Author Affiliations


Optics Letters, Vol. 39, Issue 12, pp. 3555-3558 (2014)
http://dx.doi.org/10.1364/OL.39.003555


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Abstract

We report on the efficient blue light emission from In0.16Ga0.84N/GaN multiple quantum wells excited by femtosecond laser pulses with long wavelengths ranging from 1.24 to 2.48 μm. It is found that the trap states in GaN barrier layers lead to an efficient cascade multiphoton absorption in which the carriers are generated through simultaneous absorption of n (n=1 and 2) photons to the trap states, followed by simultaneous absorption of m (m=3, 4, and 5) photons to the conduction band. The dependence of the upconversion luminescence on excitation intensity exhibits a slope between n and n+m, which is in good agreement with the prediction based on the rate equation model.

© 2014 Optical Society of America

OCIS Codes
(160.6000) Materials : Semiconductor materials
(190.4180) Nonlinear optics : Multiphoton processes
(190.7220) Nonlinear optics : Upconversion

ToC Category:
Nonlinear Optics

History
Original Manuscript: April 24, 2014
Manuscript Accepted: May 8, 2014
Published: June 9, 2014

Citation
Mao-Hui Yuan, Hui Li, Jian-Hua Zeng, Hai-Hua Fan, Qiao-Feng Dai, Sheng Lan, and Shu-Ti Li, "Efficient blue light emission from In0.16Ga0.84N/GaN multiple quantum wells excited by 2.48-μm femtosecond laser pulses," Opt. Lett. 39, 3555-3558 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-12-3555

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