Abstract
We describe various optical techniques for processing and detection of femtosecond laser pulses. Photorefractive and cascaded second order nonlinear wave mixing are used for space-to-time conversion, transforming space domain information into ultrafast temporal waveforms. An inverse operation that transforms a femtosecond pulse sequence into a quasi-stationary spatial image is performed with spectral domain three wave-mixing. We also demonstrate single-shot phase sensitive femtosecond pulse detection with two-photon absorption in a conventional silicon detector array. This approach allows efficient detection of wide-bandwidth ultrafast signals in the wavelength range of 1-2 μm.
| Original language | English |
|---|---|
| Pages (from-to) | 231-242 |
| Number of pages | 12 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 4803 |
| DOIs | |
| State | Published - 2002 |
| Externally published | Yes |
| Event | Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VII - Seattle, WA, United States Duration: 9 Jul 2002 → 11 Jul 2002 |
Keywords
- Interferometric correlation
- Nonlinear information processing
- Pulse imaging
- Pulse shaping
- Sonogram
- Space-time processes
- Two-photon absorption