Related Experiment Video
Updated: Aug 30, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Extremely uniform angular distributions of the three-dimensional emission spectra of photonic quantum ring lasers
Joongwoo Bae1, Jawoong Lee, Dongkwon Kim
1Department of Electronic and Electrical Engineering, Pohang University of Science and Technology, Pohang 790-784, South Korea. joongwoo@postech.ac.kr
Abstract:
We have observed the emission spectra of three-dimensional Rayleigh-Fabry-Perot cavity whispering-gallery modes from photonic quantum ring lasers that give rise to uniform angular mode spacing in space. The observed angular distribution (0 degrees approximately 30 degrees) of the emission modes is linear with respect to the mode number. For example, the average angular mode spacing is 0.95 degrees with a standard deviation of 0.098 degrees for a 20-microm-diameter laser, whose potential angle-resolving power is promising for angle-sensing applications in the future.
Related Concept Videos
Emission Spectra
The de Broglie Wavelength
Generating Electromagnetic Radiations
The Bohr Model
Dual Nature of Electromagnetic (EM) Radiation
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the number of...
Plane Electromagnetic Waves I
The EM field is assumed to be a...

