Locked multichannel generation and management by use of a Fabry-Perot etalon in a mode-locked Cr:forsterite laser cavity

We demonstrate a method to manage the locked multichannel output from a mode-locked Cr:forsterite laser cavity, which was achieved by inserting a Fabry-Perot etalon into the oscillator. It is found that the thickness of the etalon determines the channel spacing and its surface reflectivity affects channel linewidth and channel pulsewidth. Following Fabry-Perot theory, we can use these tracts to control the characteristics of these locked multichannels.