High-order mode selection, phase locking and coherent addition of laser distributions

High-order mode selection, phase locking and coherent addition of laser distributions Our group is involved in theoretical and experimental investigations of advanced laser configurations. Experimental investigations are performed using solid-state lasers, fiber lasers, gas lasers and micro lasers. Some of our research topics include longitudinal modes stability and jitter, laser output power jitter, laser modal built-up and the effects of passive and active Q-switch.

The research topics include investigations of:

♣ High-order TEM modes (e.g. TEM_01-04, TEM_01*-02*) and very high-order modes (e.g. TEM₄₄) in laser resonators.
♣ Phase locked arrays of laser distributions.
♣ Coherent addition of laser distributions.
♣ Improvement of beam quality of multimode laser resonators.

Figures

	Efficient coherent addition of sixteen Gaussian beams to form a single combined beam. Efficiency around 90 percent.
	Experimental far field intensity distributions of TEM34 and TEM44 modes. Energy 5 times greater than Gaussian mode.
	Near field and far field intensity distributions of four phased locked lasers.
	Efficient coherent addition of multimode beams to form a single combined beam. Efficiency around 90 percent.