Abstract
We report relaxation oscillation free, true continuous-wave
operation of a singly-resonant, intracavity optical parametric oscillator (OPO) based upon periodically-poled, MgO-doped LiNbO3 and pumped internal to the cavity of a compact, optically-excited semiconductor disk laser (or VECSEL). The very short upper-laser-state lifetime of this laser gain medium, coupled with the enhancing effect of the high-finesse pump laser cavity in which the OPO is located, enables a low threshold, high efficiency intracavity device to be operated free of relaxation oscillations in continuous-wave mode. By optimizing for low-power operation, parametric threshold was achieved at a diode-laser power of only 1.4W. At 8.5W of diode-laser power, 205mW of idler power was extracted, indicating a total
down-converted power of 1.25W, and hence a down-conversion efficiency of 83%.
| Original language | English |
|---|---|
| Pages (from-to) | 10648-10658 |
| Number of pages | 11 |
| Journal | Optics Express |
| Volume | 17 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 22 Jun 2009 |
Keywords
- continuous-wave operation
- optical parametic oscillator
- OPO
- semiconductor disc laser
- VECSEL
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