Patent ID: 6987285
Filing Date: 2006-01-17
Classification: B82Y,H01S

Abstract:
1. A semiconductor light emitting device comprising: a semiconductor substrate formed from InP; an active layer which is formed from InGaAsP and provided at an upper side of the semiconductor substrate, and which has a width of not less than 3.5 μm; and an n-type cladding layer formed from InGaAsP and a p-type cladding layer formed from InP, which hold the active layer therebetween, wherein given that a refractive index of the n-type cladding layer is na, and a refractive index of the p-type cladding layer is nb, a relationship na>nb is satisfied, and wherein a distribution of light generated by the active layer is deflected to the n-type cladding layer side, such that optical loss by intervalence band light absorption at the p-type cladding layer is suppressed.