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2015
Conference Paper
Title
Frequency stabilisation of single emitters and the effect on the beam quality
Abstract
We present the improvement of the lateral beam quality due to frequency stabilisation in a Dense Wavelength Division Multiplexing setup using Volume Bragg Gratings. The spectral width of each frequency stabilised channel amounts to less than 300 pm and an overall multiplexing efficiency of 86% has been measured. The near and far field intensity distributions consist of discrete modes and were observed with a post positioned beam analysis module. When operated with frequency stabilisation, the lateral beam quality factor M2 of the single emitters decreased by a factor of 1.4 on average compared to the free running source.