Full text loading...
(a) SEM image of a hybrid GaP-diamond microdisk. [(b) and (c)] FDTD simulated field profiles [ and , respectively], of the and modes. (d) Widefield charge-coupled device camera image of PL from a hybrid microdisk.
PL spectra of GaP-diamond microdisks excited with a 532 nm source. Microdisk thickness and diameter , for the devices measured in (a) and (b), respectively. Diamond etch depth . Excitation power .
(a) PL spectra of a microdisk. From FDTD simulations. we estimate that . (b) Measured (top) and FDTD calculated (bottom) FSR dispersion of the four highest- sets of modes in Fig. 2(b). GaP refractive index dispersion (Ref. 26) was included in FDTD simulations. (c) System response limited lineshape of the resonance. Fit of a Lorentzian convolved with the pixelized Gaussian system response shown in red.
Effect of diamond etching on microdisk mode spectra . PL spectra (a) before and (b) after 250 nm vertical diamond etching. Excitation power in [(a) and (b)] . (c) Wavelength dependence of for the TE-0 mode before and after 600 nm diamond etching. Simulated values for shown by solid lines, assuming where is calculated using FDTD, and .
Hybrid microdisk sample properties. HPHT: High pressure, high temperature.
Article metrics loading...