A III-V-on-Si ultra-dense comb laser

Z. Wang, K. van Gasse, V. Moskalenko, S. Latkowski, E.A.J.M. Bente, B. Kuyken, Gunther Roelkens

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Optical frequency combs emerge as a promising technology that enables highly sensitive, near-real-time spectroscopy with a high resolution. The currently available comb generators are mostly based on bulky and high-cost femtosecond lasers for dense comb generation (line spacing in the range of 100 MHz to 1 GHz). However, their integrated and low-cost counterparts, which are integrated semiconductor mode-locked lasers, are limited by their large comb spacing, small number of lines and broad optical linewidth. In this study, we report a demonstration of a III-V-on-Si comb laser that can function as a compact, low-cost frequency comb generator after frequency stabilization. The use of low-loss passive silicon waveguides enables the integration of a long laser cavity, which enables the laser to be locked in the passive mode at a record-low 1 GHz repetition rate. The 12-nm 10-dB output optical spectrum and the notably small optical mode spacing results in a dense optical comb that consists of over 1400 equally spaced optical lines. The sub-kHz 10-dB radio frequency linewidth and the narrow longitudinal mode linewidth (<400 kHz) indicate notably stable mode-locking. Such integrated dense comb lasers are very promising, for example, for high-resolution and real-time spectroscopy applications.
LanguageEnglish
Article numbere16260
Number of pages7
JournalLight: Science and Applications
Volume6
Issue number5
DOIs
StatePublished - 1 May 2017

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Linewidth
Lasers
Laser modes
lasers
spacing
Spectroscopy
Costs
generators
Laser mode locking
Laser resonators
Silicon
Ultrashort pulses
high resolution
laser cavities
Waveguides
Demonstrations
Stabilization
spectroscopy
locking
optical spectrum

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Wang, Z. ; van Gasse, K. ; Moskalenko, V. ; Latkowski, S. ; Bente, E.A.J.M. ; Kuyken, B. ; Roelkens, Gunther. / A III-V-on-Si ultra-dense comb laser. In: Light: Science and Applications. 2017 ; Vol. 6, No. 5.
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title = "A III-V-on-Si ultra-dense comb laser",
abstract = "Optical frequency combs emerge as a promising technology that enables highly sensitive, near-real-time spectroscopy with a high resolution. The currently available comb generators are mostly based on bulky and high-cost femtosecond lasers for dense comb generation (line spacing in the range of 100 MHz to 1 GHz). However, their integrated and low-cost counterparts, which are integrated semiconductor mode-locked lasers, are limited by their large comb spacing, small number of lines and broad optical linewidth. In this study, we report a demonstration of a III-V-on-Si comb laser that can function as a compact, low-cost frequency comb generator after frequency stabilization. The use of low-loss passive silicon waveguides enables the integration of a long laser cavity, which enables the laser to be locked in the passive mode at a record-low 1 GHz repetition rate. The 12-nm 10-dB output optical spectrum and the notably small optical mode spacing results in a dense optical comb that consists of over 1400 equally spaced optical lines. The sub-kHz 10-dB radio frequency linewidth and the narrow longitudinal mode linewidth (<400 kHz) indicate notably stable mode-locking. Such integrated dense comb lasers are very promising, for example, for high-resolution and real-time spectroscopy applications.",
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Wang, Z, van Gasse, K, Moskalenko, V, Latkowski, S, Bente, EAJM, Kuyken, B & Roelkens, G 2017, 'A III-V-on-Si ultra-dense comb laser' Light: Science and Applications, vol. 6, no. 5, e16260. DOI: 10.1038/lsa.2016.260

A III-V-on-Si ultra-dense comb laser. / Wang, Z.; van Gasse, K.; Moskalenko, V.; Latkowski, S.; Bente, E.A.J.M.; Kuyken, B.; Roelkens, Gunther.

In: Light: Science and Applications, Vol. 6, No. 5, e16260, 01.05.2017.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - A III-V-on-Si ultra-dense comb laser

AU - Wang,Z.

AU - van Gasse,K.

AU - Moskalenko,V.

AU - Latkowski,S.

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AU - Kuyken,B.

AU - Roelkens,Gunther

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N2 - Optical frequency combs emerge as a promising technology that enables highly sensitive, near-real-time spectroscopy with a high resolution. The currently available comb generators are mostly based on bulky and high-cost femtosecond lasers for dense comb generation (line spacing in the range of 100 MHz to 1 GHz). However, their integrated and low-cost counterparts, which are integrated semiconductor mode-locked lasers, are limited by their large comb spacing, small number of lines and broad optical linewidth. In this study, we report a demonstration of a III-V-on-Si comb laser that can function as a compact, low-cost frequency comb generator after frequency stabilization. The use of low-loss passive silicon waveguides enables the integration of a long laser cavity, which enables the laser to be locked in the passive mode at a record-low 1 GHz repetition rate. The 12-nm 10-dB output optical spectrum and the notably small optical mode spacing results in a dense optical comb that consists of over 1400 equally spaced optical lines. The sub-kHz 10-dB radio frequency linewidth and the narrow longitudinal mode linewidth (<400 kHz) indicate notably stable mode-locking. Such integrated dense comb lasers are very promising, for example, for high-resolution and real-time spectroscopy applications.

AB - Optical frequency combs emerge as a promising technology that enables highly sensitive, near-real-time spectroscopy with a high resolution. The currently available comb generators are mostly based on bulky and high-cost femtosecond lasers for dense comb generation (line spacing in the range of 100 MHz to 1 GHz). However, their integrated and low-cost counterparts, which are integrated semiconductor mode-locked lasers, are limited by their large comb spacing, small number of lines and broad optical linewidth. In this study, we report a demonstration of a III-V-on-Si comb laser that can function as a compact, low-cost frequency comb generator after frequency stabilization. The use of low-loss passive silicon waveguides enables the integration of a long laser cavity, which enables the laser to be locked in the passive mode at a record-low 1 GHz repetition rate. The 12-nm 10-dB output optical spectrum and the notably small optical mode spacing results in a dense optical comb that consists of over 1400 equally spaced optical lines. The sub-kHz 10-dB radio frequency linewidth and the narrow longitudinal mode linewidth (<400 kHz) indicate notably stable mode-locking. Such integrated dense comb lasers are very promising, for example, for high-resolution and real-time spectroscopy applications.

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Wang Z, van Gasse K, Moskalenko V, Latkowski S, Bente EAJM, Kuyken B et al. A III-V-on-Si ultra-dense comb laser. Light: Science and Applications. 2017 May 1;6(5). e16260. Available from, DOI: 10.1038/lsa.2016.260