Time-domain upconversion measurements of group-velocity dispersion in quantum cascade lasers

Hyunyong Choi, Laurent Diehl, Federico Capasso, David Bour, Scott Corzine, Jintian Zhu, Gloria Höfler, Theodore B. Norris

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

A time-resolved mid-infrared upconversion technique based on sum-frequency generation was applied to measure pulse propagation in λ ∼ 5.0 μm quantum cascade lasers operated in continuous wave at 30 K. The wavelength-dependent propagation delay of femtosecond mid-infrared pulses was measured to determine the total group-velocity dispersion. The material and waveguide dispersion were calculated and their contributions to the total group-velocity dispersion were found to be relatively small and constant. The small-signal gain dispersion was estimated from a measurement of the electroluminescence spectrum without a laser cavity, and was found to be the largest component of the total GVD. A negative group-velocity dispersion of β2 (=d2β/dω2) approximately - 4.6×10-6 ps2/μm was observed at the peak emission wavelength, and good agreement was found for the measured and calculated pulse-broadening.

Original languageEnglish
Pages (from-to)15898-15907
Number of pages10
JournalOptics Express
Volume15
Issue number24
DOIs
Publication statusPublished - 2007 Nov 26

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quantum cascade lasers
group velocity
pulses
propagation
laser cavities
wavelengths
electroluminescence
continuous radiation
waveguides

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Choi, H., Diehl, L., Capasso, F., Bour, D., Corzine, S., Zhu, J., ... Norris, T. B. (2007). Time-domain upconversion measurements of group-velocity dispersion in quantum cascade lasers. Optics Express, 15(24), 15898-15907. https://doi.org/10.1364/OE.15.015898
Choi, Hyunyong ; Diehl, Laurent ; Capasso, Federico ; Bour, David ; Corzine, Scott ; Zhu, Jintian ; Höfler, Gloria ; Norris, Theodore B. / Time-domain upconversion measurements of group-velocity dispersion in quantum cascade lasers. In: Optics Express. 2007 ; Vol. 15, No. 24. pp. 15898-15907.
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Choi, H, Diehl, L, Capasso, F, Bour, D, Corzine, S, Zhu, J, Höfler, G & Norris, TB 2007, 'Time-domain upconversion measurements of group-velocity dispersion in quantum cascade lasers', Optics Express, vol. 15, no. 24, pp. 15898-15907. https://doi.org/10.1364/OE.15.015898

Time-domain upconversion measurements of group-velocity dispersion in quantum cascade lasers. / Choi, Hyunyong; Diehl, Laurent; Capasso, Federico; Bour, David; Corzine, Scott; Zhu, Jintian; Höfler, Gloria; Norris, Theodore B.

In: Optics Express, Vol. 15, No. 24, 26.11.2007, p. 15898-15907.

Research output: Contribution to journalArticle

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Choi H, Diehl L, Capasso F, Bour D, Corzine S, Zhu J et al. Time-domain upconversion measurements of group-velocity dispersion in quantum cascade lasers. Optics Express. 2007 Nov 26;15(24):15898-15907. https://doi.org/10.1364/OE.15.015898