Abstract
Near-transform-limited femtosecond infrared pulses are generated in the 2.8 to 3.6 μm spectral region by parametric frequencymixing in KTP of the synchronised outputs of an 82 MHz femtosecond Ti: sapphire laser and a tunable visible-range femtosencond optical parametric oscillator pumped by the second-harmonic of the Ti: sapphire laser. Infrared pulse-widths down to 90 fs are measured and the dependence of pulse duration on frequency and mixing-crystal thickness is accurately described by a detailed calculation and a simple analytical expression.
| Original language | English |
|---|---|
| Pages (from-to) | 159-162 |
| Number of pages | 4 |
| Journal | Optics Communications |
| Volume | 119 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 15 Aug 1995 |