Abstract
We report more than 1.1 Watt of idler power at 3373 nm in a singly resonant optical parametric oscillator (SRO), directly pumped by a single-frequency monolithic tapered diode laser. The SRO is based on a periodically poled MgO:LiNbO3 crystal in a four mirror cavity and is excited by 8.05 W of 1062 nm radiation. The SRO pump power at threshold is 4 W. The internal slope-efficiency and conversion efficiency reach 89% and 44% respectively. The signal and idler waves are temperature tuned in the range of 1541 to 1600 nm and 3154 to 3415 nm respectively. To the best of our knowledge, this is the highest output obtained for a diode pumped optical parametric oscillator (OPO), and the first time a SRO is directly pumped by a monolithic tapered diode laser.
Highlights
Resonant, continuous-wave optical parametric oscillators (SROs) have the advantage of wider and simpler continuous idler tuning compared to doubly and triply resonant optical parametric oscillators (OPOs)
We report more than 1.1 Watt of idler power at 3373 nm in a singly resonant optical parametric oscillator (SRO), directly pumped by a single-frequency monolithic tapered diode laser
To the best of our knowledge, this is the highest output obtained for a diode pumped optical parametric oscillator (OPO), and the first time a SRO is directly pumped by a monolithic tapered diode laser
Summary
Continuous-wave (cw) optical parametric oscillators (SROs) have the advantage of wider and simpler continuous idler tuning (without mode hops) compared to doubly and triply resonant optical parametric oscillators (OPOs). The restriction of the idler tuning to this wavelength range renders this approach of limited use for addressing organic molecules in the fingerprint region, which is one of the main motivations for research on mid-IR OPOs [13,14] To access this important fingerprint region with diodepumped SROs, and keep the OPO threshold reasonably low, longer pump wavelengths are required so that the OPO operates closer to degeneracy. The poor coupling between such a pump beam and the cavity mode of the resonant signal increases the OPO threshold To overcome this problem, advanced diode lasers designs are required that show only a moderate spectral and spatial beam quality degradation at high output power. The signal and idler waves are temperature tuned in the range of 1541 to 1600 nm and 3154 to 3415 nm respectively
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
