Measurement of optical nonlinearities from intersubband transitions in GaN/AlGaN quantum wells at 1.5 μm

Gang Chen; R. Rapaport; O. Mitrofanov; C. Gmachl; H. M. Ng

doi:10.1002/pssb.200303371

Measurement of optical nonlinearities from intersubband transitions in GaN/AlGaN quantum wells at 1.5 μm

Gang Chen, R. Rapaport, O. Mitrofanov, C. Gmachl, H. M. Ng

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

We measured the resonant nonlinear optical absorption and refraction due to intersubband transitions in GaN/AlGaN multiple quantum well structures at 1. 5 μm. The measured values are much smaller than that predicted by theoretical studies. This is attributed to a larger than expected dephasing of excited electrons. At high excitation intensity, the absorption can be saturated.

Original language	English (US)
Pages (from-to)	384-387
Number of pages	4
Journal	Physica Status Solidi (B) Basic Research
Volume	240
Issue number	2
DOIs	https://doi.org/10.1002/pssb.200303371
State	Published - Nov 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1002/pssb.200303371

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title = "Measurement of optical nonlinearities from intersubband transitions in GaN/AlGaN quantum wells at 1.5 μm",

abstract = "We measured the resonant nonlinear optical absorption and refraction due to intersubband transitions in GaN/AlGaN multiple quantum well structures at 1. 5 μm. The measured values are much smaller than that predicted by theoretical studies. This is attributed to a larger than expected dephasing of excited electrons. At high excitation intensity, the absorption can be saturated.",

author = "Gang Chen and R. Rapaport and O. Mitrofanov and C. Gmachl and Ng, \{H. M.\}",

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AU - Chen, Gang

AU - Rapaport, R.

AU - Mitrofanov, O.

AU - Gmachl, C.

AU - Ng, H. M.

PY - 2003/11

Y1 - 2003/11

N2 - We measured the resonant nonlinear optical absorption and refraction due to intersubband transitions in GaN/AlGaN multiple quantum well structures at 1. 5 μm. The measured values are much smaller than that predicted by theoretical studies. This is attributed to a larger than expected dephasing of excited electrons. At high excitation intensity, the absorption can be saturated.

AB - We measured the resonant nonlinear optical absorption and refraction due to intersubband transitions in GaN/AlGaN multiple quantum well structures at 1. 5 μm. The measured values are much smaller than that predicted by theoretical studies. This is attributed to a larger than expected dephasing of excited electrons. At high excitation intensity, the absorption can be saturated.

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DO - 10.1002/pssb.200303371

M3 - Article

AN - SCOPUS:0344926503

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VL - 240

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EP - 387

JO - Physica Status Solidi (B) Basic Research

JF - Physica Status Solidi (B) Basic Research

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ER -

Measurement of optical nonlinearities from intersubband transitions in GaN/AlGaN quantum wells at 1.5 μm

Abstract

All Science Journal Classification (ASJC) codes

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