Title :
Coherently Coupled Photonic Crystal Surface Emitting Lasers
Author :
Taylor, R.J.E. ; Childs, D.T.D. ; Crombie, A. ; Stevens, B.J. ; Ivanov, P.S. ; Babazadeh, N. ; Groom, K.M. ; Shepherd, L. ; Ternent, G. ; Thoms, S. ; Zhou, Huimin ; Sarma, J. ; Khamas, S. ; Hogg, R.A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
In this paper we demonstrate coherently coupled PCSELs. By utilising allsemiconductor PCSELs, realised by MOVPE re-growth [6], we fabricate PCSELs coupled by an electrically driven region (“coupler”), shown schematically in Fig. 2, allowing the electronic control of coherence between emitters. This is made possible due to the small modal refractive index change between coupler and PCSEL in our all-semiconductor device. Both coupled PCSELs have a threshold current of ~65mA and matched emission wavelengths of 986.5nm due to nominally identical photonic crystal structures.
Keywords :
MOCVD; light coherence; optical control; optical couplers; optical fabrication; optical pumping; photonic crystals; refractive index; surface emitting lasers; vapour phase epitaxial growth; MOVPE regrowth; coherently coupled PCSEL fabrication; electronic control; nominally identical photonic crystal structures; photonic crystal surface emitting lasers; refractive index change; wavelength 986.5 nm; Couplers; Couplings; Educational institutions; Photonic crystals; Semiconductor laser arrays; Vertical cavity surface emitting lasers;
Conference_Titel :
Semiconductor Laser Conference (ISLC), 2014 International
Conference_Location :
Palma de Mallorca
Print_ISBN :
978-1-4799-5721-7
DOI :
10.1109/ISLC.2014.239
