Journal Article

PUBDB-2018-00770

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Octave-spanning coherent supercontinuum generation in silicon on insulator from 1.06 μm to beyond 2.4 μm

Singh, N. (Corresponding author) ; Xin, M.CFEL*DESY* ; Vermeulen, D. ; Shtyrkova, K. ; Li, N. ; Callahan, P. T.CFEL*DESY* ; Magden, E. S. ; Ruocco, A. ; Fahrenkopf, N. ; Baiocco, C. ; Kuo, B. P. -P. ; Radic, S. ; Ippen, E. ; Kärtner, F.CFEL*Extern*DESY* ; Watts, M. R.

2018
Nature Publishing Group London

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Please use a persistent id in citations: doi:10.1038/lsa.2017.131  doi:10.3204/PUBDB-2018-00770

Abstract: Efficient complementary-metal-oxide-semiconductor-based nonlinear optical devices in the near infrared are in strong demand. Due to two-photon absorption in silicon, however, much nonlinear research is shifting towards unconventional photonics platforms. In this work, we demonstrate the generation of an octave-spanning coherent supercontinuum in a silicon waveguide covering the spectral region from the near- to shortwave-infrared. With input pulses of 18 pJ in energy, the generate d signal spans the wavelength range from the edge of the silicon transmission window, approximately 1.06 μm to beyond 2.4μm, with a −20 dB bandwidth covering 1.124 - 2.4μm. An octave-spanning supercontinuum was also observed at the energy levels as low as 4 pJ (-35 dB bandwidth). We also measured the coherence over an octave, obtaining $|g_{12}^{(1)}(\lambda)|$ in good agreement with the simulations. Additionally, we demonstrate optimization of the third-or der dispersion of the waveguide to strengthen the dispersive wave and discuss the advantage of having a soliton at the long wavelength edge of an octave-spanning sign al for nonlinear applications. This research paves the way for applications, such as chip -scale precision spectroscopy, optical coherence tomography, optical frequency metrology, frequency synthesis and wide-band wavelength division multiplexing in the telecom window.

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Contributing Institute(s):

1. FS-CFEL-2 (CFEL-UFOX)
2. Ultrafast Lasers & X-rays Division (FS-CFEL-2)

Research Program(s):

1. 6211 - Extreme States of Matter: From Cold Ions to Hot Plasmas (POF3-621) (POF3-621)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2018

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Database coverage:
; ; ; ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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