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Octave-spanning mid-infrared supercontinuum generation in all-normal dispersion silicon germanium waveguide
- Source :
- Photonics West, LASE, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, Photonics West, LASE, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, Mar 2021, Online Only, United States. pp.27, ⟨10.1117/12.2576980⟩
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- We report what we believe to be the first octave-spanning supercontinuum generation from all-normal dispersion waveguide on a silicon-based chip in the mid-infrared. Here we use 205 fs pulses at 4 μm coupled to low loss, 5.0 μm x 2.7 μm cross-section, silicon germanium-on-silicon waveguide operating in tha all-normal dispersion regime. Generated supercontinuum spans more than an octave between 2.8 and 5.7 μm. Besides, simulations show a high degree of coherence across the entire -30 dB spectrum. Such supercontinuum provides an ideal light probe for broadband mid-infrared molecular absorption spectroscopy.
- Subjects :
- Waveguide (electromagnetism)
Materials science
Silicon
business.industry
chemistry.chemical_element
Degree of coherence
Octave (electronics)
Silicon-germanium
Supercontinuum
chemistry.chemical_compound
chemistry
Dispersion (optics)
[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic
Optoelectronics
business
Spectroscopy
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Photonics West, LASE, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, Photonics West, LASE, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, Mar 2021, Online Only, United States. pp.27, ⟨10.1117/12.2576980⟩
- Accession number :
- edsair.doi.dedup.....96697823c66d3ffe471afa72db090754