Far-infrared surface-plasmon quantum-cascade lasers at 21.5 μm and 24 μm wavelengths

Raffaele Colombelli; Federico Capasso; Claire Gmachl; Albert L. Hutchinson; Deborah L. Sivco; Alessandro Tredicucci; Michael C. Wanke; A. Michael Sergent; Alfred Y. Cho

doi:10.1063/1.1367304

Far-infrared surface-plasmon quantum-cascade lasers at 21.5 μm and 24 μm wavelengths

Raffaele Colombelli, Federico Capasso, Claire Gmachl, Albert L. Hutchinson, Deborah L. Sivco, Alessandro Tredicucci, Michael C. Wanke, A. Michael Sergent, Alfred Y. Cho

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

212 Scopus citations

Abstract

Quantum-cascade lasers operating above 20 μm (at λ∼21.5 μm and λ∼24 μm) wavelength are reported. Pulsed operation was obtained up to 140 K and with a peak power of a few milliwatts at cryogenic temperatures. Laser action originates from interminiband transitions in "chirped" superlattice active regions. The waveguides are based on surface-plasmon modes confined at a metal-semiconductor interface. The wavelengths were chosen in order to avoid major phonon absorption bands, which are particularly strong at energies just above the reststrahlen band. We also report on a 21.5-μm-wavelength laser based on a two-sided interface-plasmon waveguide.

Original language	English (US)
Pages (from-to)	2620-2622
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	18
DOIs	https://doi.org/10.1063/1.1367304
State	Published - Apr 30 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.1367304

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title = "Far-infrared surface-plasmon quantum-cascade lasers at 21.5 μm and 24 μm wavelengths",

abstract = "Quantum-cascade lasers operating above 20 μm (at λ∼21.5 μm and λ∼24 μm) wavelength are reported. Pulsed operation was obtained up to 140 K and with a peak power of a few milliwatts at cryogenic temperatures. Laser action originates from interminiband transitions in {"}chirped{"} superlattice active regions. The waveguides are based on surface-plasmon modes confined at a metal-semiconductor interface. The wavelengths were chosen in order to avoid major phonon absorption bands, which are particularly strong at energies just above the reststrahlen band. We also report on a 21.5-μm-wavelength laser based on a two-sided interface-plasmon waveguide.",

author = "Raffaele Colombelli and Federico Capasso and Claire Gmachl and Hutchinson, {Albert L.} and Sivco, {Deborah L.} and Alessandro Tredicucci and Wanke, {Michael C.} and Sergent, {A. Michael} and Cho, {Alfred Y.}",

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TY - JOUR

T1 - Far-infrared surface-plasmon quantum-cascade lasers at 21.5 μm and 24 μm wavelengths

AU - Colombelli, Raffaele

AU - Capasso, Federico

AU - Gmachl, Claire

AU - Hutchinson, Albert L.

AU - Sivco, Deborah L.

AU - Tredicucci, Alessandro

AU - Wanke, Michael C.

AU - Sergent, A. Michael

AU - Cho, Alfred Y.

PY - 2001/4/30

Y1 - 2001/4/30

N2 - Quantum-cascade lasers operating above 20 μm (at λ∼21.5 μm and λ∼24 μm) wavelength are reported. Pulsed operation was obtained up to 140 K and with a peak power of a few milliwatts at cryogenic temperatures. Laser action originates from interminiband transitions in "chirped" superlattice active regions. The waveguides are based on surface-plasmon modes confined at a metal-semiconductor interface. The wavelengths were chosen in order to avoid major phonon absorption bands, which are particularly strong at energies just above the reststrahlen band. We also report on a 21.5-μm-wavelength laser based on a two-sided interface-plasmon waveguide.

AB - Quantum-cascade lasers operating above 20 μm (at λ∼21.5 μm and λ∼24 μm) wavelength are reported. Pulsed operation was obtained up to 140 K and with a peak power of a few milliwatts at cryogenic temperatures. Laser action originates from interminiband transitions in "chirped" superlattice active regions. The waveguides are based on surface-plasmon modes confined at a metal-semiconductor interface. The wavelengths were chosen in order to avoid major phonon absorption bands, which are particularly strong at energies just above the reststrahlen band. We also report on a 21.5-μm-wavelength laser based on a two-sided interface-plasmon waveguide.

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Far-infrared surface-plasmon quantum-cascade lasers at 21.5 μm and 24 μm wavelengths

Abstract

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