Po. Kellermann et al., SINGLE-MODE AND SINGLE-BEAM SURFACE EMISSION FROM VISIBLE RED GAINP ALGAINP LASER-DIODES/, Applied physics letters, 70(18), 1997, pp. 2374-2376
Single-mode and single-beam surface emission (675-680 nm) has been ach
ieved from visible red GaInP/AlGaInP laser diodes by applying the surf
ace mode emission technique. The laser diodes emit a single beam via t
he surface with a beam divergence of 0.16 degrees and show single-mode
emission both in ac as well as in dc operation with a minimum spectra
l linewidth of 0.07 nm. The highest sidemode suppression achieved at p
resent in ac operation is 19 dB. (C) 1997 American Institute of Physic
s.