Abstract
Tunable 90-ps 15.6-17.6-μm coherent radiation was generated by means of difference-frequency mixing in diffusion-bonded-stacked GaAs. The sample consisted of 24 alternately rotated layers with a total length of 6 mm and with low optical loss to achieve third-order quasi-phase matching. The wavelength-tuning curve was close to the theoretical prediction, demonstrating that the bonding process maintained nonlinear optical phase matching over the entire interaction length. Maximum conversion efficiency of 0.7%, or 5% internal quantum efficiency, was measured at 16.6 μm consistent with the theoretical predictions.
| Original language | English |
|---|---|
| Pages (from-to) | 1010-1012 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 23 |
| Issue number | 13 |
| DOIs | |
| State | Published - 1 Jul 1998 |