Projects per year
We demonstrate a dual-material integrated photonic thermometer, fabricated by high accuracy micro-transfer printing. A freestanding diamond micro-disk resonator is printed in close proximity to a gallium nitride on a sapphire racetrack resonator, and respective loaded Q factors of 9.1 × 104 and 2.9 × 104 are measured. We show that by using two independent wide-bandgap materials, tracking the thermally induced shifts in multiple resonances, and using optimized curve fitting tools the measurement error can be reduced to 9.2 mK. Finally, for the GaN, in a continuous acquisition measurement we record an improvement in minimum Allan variance, occurring at an averaging time four times greater than a comparative silicon device, indicating better performance over longer time scales.
- integrated photonic thermometer
- micro-transfer printing
FingerprintDive into the research topics of 'High precision integrated photonic thermometry enabled by a transfer printed diamond resonator on GaN waveguide chip'. Together they form a unique fingerprint.
- 3 Active
1/04/14 → 30/09/22
Project: Research - Studentship
Data for: "High precision integrated photonic thermometry enabled by a transfer printed diamond resonator on a GaN waveguide chip"