2018/03/01 by Tao Wang, Wang, Tao, G. P. Puccioni +3
Engineering · Physics and Astronomy · #FOS: Physical sciences #Mechanical and Optical Resonators #Optics (physics.optics) #Photonic and Optical Devices #Semiconductor Lasers and Optical Devices
paper · pdf · doi:10.48550/arxiv.1803.00483
openalex publication_date 2018/03/01 · openalex created_date 2018/03/29 · openalex updated_date 2026/07/28
We present a simple and flexible technique for identifying the onset of coherent emission in lasers, from the mesoscale to the nanoscale, which makes use of photon counting and a small amplitude modulation added to the pump. The optimal modulation frequency is obtained from the radiofrequency power spectrum of the unperturbed laser emission. The identification of the lasing onset rests on the appearence of a resonance in the response of the zero-order autocorrelation function (g(2)(0)) plotted as a function of the pump rate. The intrinsic simplicity of this technique and its use of photon counting make it an excellent tool for certifying the onset of laser emission in nanoscale sources.