Abstract
We have observed an ultra-broadband frequency comb with a wavelength range of at least 0.35 to 4.4 μm in a ridge-waveguide-type periodically poled lithium niobate device. The PPLN waveguide is pumped by a 1.0-2.4 μm wide frequency comb with an average power of 120 mW generated using an erbium-based mode-locked fiber laser and a following highly nonlinear fiber. The coherence of the extended comb is confirmed in both the visible (around 633 nm) and the mid-infrared regions.
| Original language | English |
|---|---|
| Pages (from-to) | 3980-3983 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 41 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 2016 Sept 1 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
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