Abstract
High harmonic spectrum of a quasi-monochromatic pump that interacts with isotropic media consists of only odd-order harmonics. Addition of a secondary pump, e.g. a static field or the second harmonic of the primary pump, can results with generation of both odd and even harmonics of the primary pump. We propose a method for quasi-phase matching of only the even-order harmonics of the primary pump. We formulate a theory for this process and demonstrate it numerically. We also show that it leads to attosecond pulse trains with constant carrier envelop phase and high repetition rate.
| Original language | English |
|---|---|
| Pages (from-to) | 7145-7153 |
| Number of pages | 9 |
| Journal | Optics Express |
| Volume | 22 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2014 |
| Externally published | Yes |