| 摘要 |
In an internal OPO, a substrate comprising a thin film lies along an axis and a first mirror reflects first wavelength light. A gain medium lases and polarizes light entering therein and a Q-switch attenuates and transmits first wavelength light. An HR/HT mirror passes first wavelength light and reflects a second wavelength light, and an OPO rod converts a portion of the first wavelength light into second wavelength light. An output coupler (OC) reflects first wavelength light and passes a portion of second wavelength light, the first wavelength reflecting between the first mirror, the OC and through the gain medium and the Q-switch. The second wavelength light reflects between the HR/HT mirror and OC and through the OPO rod. The invention applies to external OPO as well. The thin film reflects the light towards the gain medium, permitting a lower power lightsource and increasing the efficiency of the gain medium.
|
