Diode lasers with cylindrical mirror facets and reduced beam divergence

Walpole, J. N.; Liau, Z. L.; Missaggia, L. J.; Yap, D.
May 1987
Applied Physics Letters;5/4/1987, Vol. 50 Issue 18, p1219
Academic Journal
Using chemical etching and mass transport, we have monolithically integrated cylindrical lenses at one of the ends of buried-heterostructure GaInAsP/InP diode laser cavities. The lenses are designed to provide reflective feedback for low-threshold current (as low as 25 mA), as well as reduction of beam width in the lateral direction (as small as 9.2°).


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