| Autor: |
Yusuke Kawahara, Yuta Hirasawa, Satoshi Ashihara |
| Rok vydání: |
2010 |
| Předmět: |
|
| Zdroj: |
2010 IEEE Photinic Society's 23rd Annual Meeting. |
| DOI: |
10.1109/photonics.2010.5699000 |
| Popis: |
We have demonstrated efficient spectral broadening of mid-infrared pulses by use of a GaAs crystal. The spectral bandwidths of the pulses at 5-µm wavelength increased from 540 nm to 2060 nm. The main advantages of this material are its large third-order nonlinearity and its transparency range (1 – 18 µm), which fully covers the molecular fingerprint region. We have also demonstrated that the second-order dispersion compensation with a CaF 2 plate generated the compressed pulses with 3 optical cycles. The demonstrated scheme should work at any wavelength within the materials transparency range, and therefore be useful for spectral broadening of pulses generated from the well-established OPA-DFG system. Arbitrary shaping of the broadband mid-infrared pulses using 4f-pulse shaper would be beneficial for nonlinear vibrational spectroscopy and coherent control experiments. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
