Abstract
We demonstrate that it is possible to obtain a
mid-infrared optical frequency comb (OFC) experimentally
by using a continuous-wave-pumped optical parametric
oscillator (OPO). The comb is generated without any
active modulation. It is based on cascading quadratic
nonlinearities that arise from intra-cavity phase
mismatched second harmonic generation of the signal wave
that resonates in the OPO. The generated OFC is
transferred from the signal wavelength (near-infrared) to
the idler wavelength (mid-infrared) by intracavity
difference frequency generation between the OPO pump wave
and the signal comb. We have produced a mid-infrared
frequency comb which is tunable from 3.0 to 3.4 µm with
an average output power of up to 3.1 W.
| Original language | English |
|---|---|
| Pages (from-to) | 10535-10543 |
| Journal | Optics Express |
| Volume | 22 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2014 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- parametric oscillators
- self-action effects
- nonlinear optics
- nonlinear wave mixing