T. Wipiejewski et al., VERTICAL-CAVITY SURFACE-EMITTING LASER-DIODES WITH POSTGROWTH WAVELENGTH ADJUSTMENT, IEEE photonics technology letters, 7(7), 1995, pp. 727-729
A novel vertical cavity surface-emitting laser design enables the post
-growth determination of the emission wavelength. The lasers employ a
hybrid top mirror consisting of a semiconductor Bragg mirror and a met
al reflector. The laser cavity length of each element in a 2-D array c
an be precisely adjusted after epitaxial growth by anodic oxidation an
d etching. An emission wavelength range of 25 nm is experimentally obs
erved. Lasers operate under continuous wave conditions with threshold
currents of about 6 mA and output powers up to 0.5 mW.