Abstract
We investigate, both theoretically and experimentally, how to build a pulsed intracavity-doubled two-frequency laser. To this aim, we use a Jones-matrix analysis in order to choose the orientations of the cavity anisotropies, namely, two quarter-wave plates, a passive Q-switch, and a doubling crystal. In particular, we find the conditions necessary for the simultaneous oscillation of the two eigenstates, depending on whether the doubling crystal is inserted between the quarter-wave plates or not. Continuous tuning of the frequency difference is provided by rotating one quarter-wave plate or the birefringent doubling crystal. Moreover, the efficiencies of second-harmonic generation and sum-frequency generation are controlled. The experimental results, obtained with a diode-pumped Nd:YAG-Cr:YAG laser intracavity doubled by a KTP crystal, are in agreement with the model.
| Original language | English |
|---|---|
| Pages (from-to) | 662-669 |
| Number of pages | 8 |
| Journal | Journal of the Optical Society of America B: Optical Physics |
| Volume | 20 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jan 2003 |
| Externally published | Yes |