Dl. Mathine et al., REDUCTION OF THE THERMAL IMPEDANCE OF VERTICAL-CAVITY SURFACE-EMITTING LASERS AFTER INTEGRATION WITH COPPER SUBSTRATES, Applied physics letters, 69(4), 1996, pp. 463-464
Vertical-cavity surface-emitting lasers (VCSELs) have been transferred
from their original GaAs substrates to Cu substrates and continuous w
ave operation has been obtained on the VCSELs after epitaxial transfer
. The resultant measurements show a doubling of the output power and a
20% reduction in the thermal impedance, Increased optical power is ex
plained by improved thermal heat sinking as measured from the lasing s
pectra of horizontal-cavity edge-emitting lasers fabricated from the s
ame VCSEL material. (C) 1996 American Institute of Physics.