Abstract
The visible to mid-infrared coverage of femtosecond optical
parametric oscillator (OPO) frequency combs makes them attractive
resources for high-resolution spectroscopy and astrophotonic spectrograph
calibration. Such applications require absolute traceability and wide combtooth
spacing, attributes which until now have remained unavailable from
any single OPO frequency comb. Here, we report a 1-GHz Ti:sapphire
pumped OPO comb whose repetition and offset frequencies are referenced
to Rb-stabilised microwave and laser oscillators respectively. This
technique simultaneously achieves fully stabilized combs from both the
Ti:sapphire laser and the OPO with sub-MHz comb-tooth linewidths, multihour
locking stability and without the need for super-continuum generation.
©2015 Optical Society of America
parametric oscillator (OPO) frequency combs makes them attractive
resources for high-resolution spectroscopy and astrophotonic spectrograph
calibration. Such applications require absolute traceability and wide combtooth
spacing, attributes which until now have remained unavailable from
any single OPO frequency comb. Here, we report a 1-GHz Ti:sapphire
pumped OPO comb whose repetition and offset frequencies are referenced
to Rb-stabilised microwave and laser oscillators respectively. This
technique simultaneously achieves fully stabilized combs from both the
Ti:sapphire laser and the OPO with sub-MHz comb-tooth linewidths, multihour
locking stability and without the need for super-continuum generation.
©2015 Optical Society of America
| Original language | English |
|---|---|
| Pages (from-to) | 16466-16472 |
| Number of pages | 7 |
| Journal | Optics Express |
| Volume | 23 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 12 Jun 2015 |