Menghan Liu, Peng Chen, Zili Xie, Xiangqian Xiu, Dunjun Chen, Bin Liu, Ping Han, Yi Shi, Rong Zhang, Youdou Zheng, Kai Cheng, Liyang Zhang. High-efficiency photon–electron coupling resonant emission in GaN-based microdisks on Si[J]. Chinese Physics B, 2020, 29(8):
- Chinese Physics B
- Vol. 29, Issue 8, (2020)
Fig. 1. Side-view SEM images of microdisks with the diameters of (a) 3.3 μm, (b) 8 μm, and (c) 18 μm.
Fig. 2. Photoluminescence spectra of the microdisks with the diameters of (a) 3.3 μm, (c) 8 μm and (e) 18 μm with the increase of pump power at room temperature. Integrated PL intensity versus pump power for (b) 3.3 μm microdisk, (d) 8 μm microdisk and (f) 18 μm microdisk.
Fig. 3. Radial electric field profiles (|E |2) of (a) 3.3 μm microdisk at 444 nm, (b) 8 μm microdisk at 440 nm and (c) 18 μm microdisk at 446 nm.
Fig. 4. Axial electric field profiles (|E |2) of (a) 3.3 μm microdisk, (b) 8 μm microdisk, and (c) 18 μm microdisk with vertical sidawalls.
Fig. 5. Axial electric field profiles (|E |2) of (a) 3.3 μm microdisk, (b) 8 μm microdisk, and (c)18 μm microdisk with inclination angles of 2.5°. Axial electric field profiles (|E |2) of (d) 3.3 μm microdisk, (e) 8 μm microdisk, and (f) 18 μm microdisk with inclination angles of 5°.
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