Stability of Pulse Emission and Enhancement of Intracavity Second-Harmonic Generation in Self-Mode-Locked Quantum Cascade Lasers

Alexander Soibel; Federico Capasso; Claire Gmachl; Milton L. Peabody; A. Michael Sergent; Roberto Paiella; Deborah L. Sivco; Alfred Y. Cho; H. C. Liu

doi:10.1109/JQE.2003.823036

Stability of Pulse Emission and Enhancement of Intracavity Second-Harmonic Generation in Self-Mode-Locked Quantum Cascade Lasers

Alexander Soibel, Federico Capasso, Claire Gmachl, Milton L. Peabody, A. Michael Sergent, Roberto Paiella, Deborah L. Sivco, Alfred Y. Cho, H. C. Liu

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

16 Scopus citations

Abstract

We report the observation of stable pulse emission and enhancement of intracavity second-harmonic generation (SHG) in self-mode-locked quantum cascade (QC) lasers. Down-conversion of the detector signal by heterodyning with an RF signal allows the direct observation of the pulsed laser emission in the time domain and reveals a stable train of pulses characteristic of mode-locked lasers. The onset of self-mode locking in QC lasers with built-in optical nonlinearity results in a significant increase of the SHG signal. A pulse duration of ∼12 ps is estimated from the measured increase of the SHG signal in pulsed emission compared to the power expected for the SHG signal in CW emission. This value is in good agreement with the pulse duration deduced from the optical spectral width.

Original language	English (US)
Pages (from-to)	197-204
Number of pages	8
Journal	IEEE Journal of Quantum Electronics
Volume	40
Issue number	3
DOIs	https://doi.org/10.1109/JQE.2003.823036
State	Published - Mar 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

Keywords

Mode-locked lasers
Nonlinear optics
Pulse generation
Pulsed laser
Semiconductor lasers
Ultrafast optics

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10.1109/JQE.2003.823036

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@article{eae4ab2ee5384d18a74301ecbfb1d2c6,

title = "Stability of Pulse Emission and Enhancement of Intracavity Second-Harmonic Generation in Self-Mode-Locked Quantum Cascade Lasers",

abstract = "We report the observation of stable pulse emission and enhancement of intracavity second-harmonic generation (SHG) in self-mode-locked quantum cascade (QC) lasers. Down-conversion of the detector signal by heterodyning with an RF signal allows the direct observation of the pulsed laser emission in the time domain and reveals a stable train of pulses characteristic of mode-locked lasers. The onset of self-mode locking in QC lasers with built-in optical nonlinearity results in a significant increase of the SHG signal. A pulse duration of ∼12 ps is estimated from the measured increase of the SHG signal in pulsed emission compared to the power expected for the SHG signal in CW emission. This value is in good agreement with the pulse duration deduced from the optical spectral width.",

keywords = "Mode-locked lasers, Nonlinear optics, Pulse generation, Pulsed laser, Semiconductor lasers, Ultrafast optics",

author = "Alexander Soibel and Federico Capasso and Claire Gmachl and Peabody, {Milton L.} and Sergent, {A. Michael} and Roberto Paiella and Sivco, {Deborah L.} and Cho, {Alfred Y.} and Liu, {H. C.}",

note = "Funding Information: Manuscript received July 21, 2003; revised December 1, 2003. This work was supported in part by the Defense Advanced Research Projects Agency/U.S. Army Research Office under Contract DAAD 19-00-C-0096. A. Soibel, C. Gmachl, M. L. Peabody, A. M. Sergent, D. L. Sivco, and A. Y. Cho are with Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974 USA. F. Capasso is with the Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138 USA. R. Paiella is with the Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215 USA. H. C. Liu is with the Institute of Microstructural Science, National Research Council, Ottawa, ON K1A R6, Canada. Digital Object Identifier 10.1109/JQE.2003.823036",

year = "2004",

month = mar,

doi = "10.1109/JQE.2003.823036",

language = "English (US)",

volume = "40",

pages = "197--204",

journal = "IEEE Journal of Quantum Electronics",

issn = "0018-9197",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "3",

}

TY - JOUR

T1 - Stability of Pulse Emission and Enhancement of Intracavity Second-Harmonic Generation in Self-Mode-Locked Quantum Cascade Lasers

AU - Soibel, Alexander

AU - Capasso, Federico

AU - Gmachl, Claire

AU - Peabody, Milton L.

AU - Sergent, A. Michael

AU - Paiella, Roberto

AU - Sivco, Deborah L.

AU - Cho, Alfred Y.

AU - Liu, H. C.

N1 - Funding Information: Manuscript received July 21, 2003; revised December 1, 2003. This work was supported in part by the Defense Advanced Research Projects Agency/U.S. Army Research Office under Contract DAAD 19-00-C-0096. A. Soibel, C. Gmachl, M. L. Peabody, A. M. Sergent, D. L. Sivco, and A. Y. Cho are with Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974 USA. F. Capasso is with the Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138 USA. R. Paiella is with the Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215 USA. H. C. Liu is with the Institute of Microstructural Science, National Research Council, Ottawa, ON K1A R6, Canada. Digital Object Identifier 10.1109/JQE.2003.823036

PY - 2004/3

Y1 - 2004/3

N2 - We report the observation of stable pulse emission and enhancement of intracavity second-harmonic generation (SHG) in self-mode-locked quantum cascade (QC) lasers. Down-conversion of the detector signal by heterodyning with an RF signal allows the direct observation of the pulsed laser emission in the time domain and reveals a stable train of pulses characteristic of mode-locked lasers. The onset of self-mode locking in QC lasers with built-in optical nonlinearity results in a significant increase of the SHG signal. A pulse duration of ∼12 ps is estimated from the measured increase of the SHG signal in pulsed emission compared to the power expected for the SHG signal in CW emission. This value is in good agreement with the pulse duration deduced from the optical spectral width.

AB - We report the observation of stable pulse emission and enhancement of intracavity second-harmonic generation (SHG) in self-mode-locked quantum cascade (QC) lasers. Down-conversion of the detector signal by heterodyning with an RF signal allows the direct observation of the pulsed laser emission in the time domain and reveals a stable train of pulses characteristic of mode-locked lasers. The onset of self-mode locking in QC lasers with built-in optical nonlinearity results in a significant increase of the SHG signal. A pulse duration of ∼12 ps is estimated from the measured increase of the SHG signal in pulsed emission compared to the power expected for the SHG signal in CW emission. This value is in good agreement with the pulse duration deduced from the optical spectral width.

KW - Mode-locked lasers

KW - Nonlinear optics

KW - Pulse generation

KW - Pulsed laser

KW - Semiconductor lasers

KW - Ultrafast optics

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M3 - Article

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SN - 0018-9197

VL - 40

SP - 197

EP - 204

JO - IEEE Journal of Quantum Electronics

JF - IEEE Journal of Quantum Electronics

IS - 3

ER -

Stability of Pulse Emission and Enhancement of Intracavity Second-Harmonic Generation in Self-Mode-Locked Quantum Cascade Lasers

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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