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In this letter, we demonstrate an experimental study of using a large area oxide-confined vertical-cavity surface-emitting laser (VCSEL) to pump a Nd:YVO/sub 4/ microchip laser. The maximum output power of 1.2 mW in TEM/sub 00/ mode is obtained with a pump power of 8.2 mW. Experimental results show that the complex transverse modal behavior of VCSELs in the higher injection current may cause an impediment of power scaling.
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Lan et al. (2002) studied this question.
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