Guoping Lin

Barium fluoride whispering-gallery-mode disk-resonator with one billion quality-factor

We demonstrate a monolithic optical whispering-gallery-mode resonator fabricated with barium fluoride (BaF₂) with an ultra-high quality (Q) factor above 10⁹ at 1550 nm, and measured with both the linewidth and cavity-ring-down methods. Vertical scanning optical profilometry shows that the root mean square surface roughness of 2 nm is achieved for our mm-size disk. To the best of our knowledge, we show for the first time that one billion Q-factor is achievable by precision polishing in relatively soft crystals with mohs hardness of 3. We show that complex thermo-optical dynamics can take place in these resonators. Beside usual applications in nonlinear optics and microwave photonics, high-energy particle scintillation detection utilizing monolithic BaF₂ resonators potentially becomes feasible.

Cascaded Brillouin lasing in monolithic barium fluoride whispering gallery mode resonators

We report the observation of stimulated Brillouin scattering and lasing at 1550~nm in barium fluoride (BaF

On the dispersion management of fluorite whispering-gallery mode resonators for Kerr optical frequency comb generation in the telecom and mid-infrared range

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Excitation mapping of whispering gallery modes in silica microcavities

) crystal. Brillouin lasing was achieved with ultra-high quality (

Kerr optical frequency comb generation in strontium fluoride whispering-gallery mode resonators with billion quality factor.

Q

High-Q UV whispering gallery mode resonators made of angle-cut BBO crystals.

) factor monolithic whispering gallery mode (WGM) mm-size disk resonators. Overmoded resonators were specifically used to provide cavity resonances for both the pump and all Brillouin Stokes waves. Single and multiple Brillouin Stokes radiations with frequency shift ranging from

Phase noise performance comparison between optoelectronic oscillators based on optical delay lines and whispering gallery mode resonators.

8.2

Wide-range cyclic phase matching and second harmonic generation in whispering gallery resonators

GHz up to

Continuous tuning of double resonance-enhanced second harmonic generation in a dispersive dielectric resonator

49

Thermal bistability-based method for real-time optimization of ultralow-threshold whispering gallery mode microlasers

GHz have been generated through cascaded Brillouin lasing. BaF