Title :
Output Coupling and Spectral Control in 1550-nm Micro-Disc Lasers Using Defects on the Rim
Author :
Cai, Xinlun ; Mezosi, Gabor ; Sorel, Marc ; Wang, Zhuoran ; Shu, Yi ; Jiang, Pisu ; Yu, Siyuan
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Bristol, Bristol, UK
Abstract :
We demonstrated room-temperature continuous-wave (RTCW) operation of electrically driven in-plane emitting micro-disc lasers with radius of 10 μm. The disk cavity was fabricated using high resolution electron beam lithography based on hydrogen silsesquioxane (HSQ) and BCl3-Cl2-Ar inductively coupled plasma etching. By using circular bump or notch defects on the circumference as output coupling as well as mode control mechanisms, single-mode operation for large bump defect lasers with sidemode suppression ratio larger than 30 dB was observed, with highly directional output emission.
Keywords :
crystal defects; electron beam lithography; laser cavity resonators; microdisc lasers; optical couplers; optical fabrication; sputter etching; circular bump; continuous wave operation; disk cavity; high resolution electron beam lithography; hydrogen silsesquioxane; inductively coupled plasma etching; large bump defect lasers; microdisc lasers; notch defects; output coupling; rim defects; single-mode operation; spectral control; temperature 293 K to 298 K; wavelength 1550 nm; Cavity resonators; Laser excitation; Laser modes; Measurement by laser beam; Pump lasers; Semiconductor lasers; Temperature measurement; Laser resonators; micro-disc lasers; semiconductor lasers; single-mode operation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2165941
