TY - GEN
T1 - Coherent operation of 2×2 vertical cavity laser array by resonance tuning
AU - Thompson, Bradley
AU - Siriani, Dominic F.
AU - Choquette, Kent D
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/11/9
Y1 - 2015/11/9
N2 - Coherently coupled vertical cavity surface emitting laser (VCSEL) arrays are of interest for high brightness operation [1], whereby multiple laser elements are coherently combined into a narrow divergence single radiation mode. 2×2 VCSEL element arrays have been pursued in the past [2, 3], but there has always been an issue with the low yield of coherently coupled arrays. Recently resonance tuning has been explored to achieve coherence in 1×2 VCSEL arrays [4]. By independent current injection into each array element, the emission wavelength of each element can be tuned due to the combined effect of the thermal and electronic dependence of the refractive index [5], enabling coherent coupling in the array [4]. This work demonstrates the next extension of resonance tuning by achieving coherent operation of an initially incoherent 2×2 array.
AB - Coherently coupled vertical cavity surface emitting laser (VCSEL) arrays are of interest for high brightness operation [1], whereby multiple laser elements are coherently combined into a narrow divergence single radiation mode. 2×2 VCSEL element arrays have been pursued in the past [2, 3], but there has always been an issue with the low yield of coherently coupled arrays. Recently resonance tuning has been explored to achieve coherence in 1×2 VCSEL arrays [4]. By independent current injection into each array element, the emission wavelength of each element can be tuned due to the combined effect of the thermal and electronic dependence of the refractive index [5], enabling coherent coupling in the array [4]. This work demonstrates the next extension of resonance tuning by achieving coherent operation of an initially incoherent 2×2 array.
UR - http://www.scopus.com/inward/record.url?scp=84964813418&partnerID=8YFLogxK
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U2 - 10.1109/IPCon.2015.7323628
DO - 10.1109/IPCon.2015.7323628
M3 - Conference contribution
AN - SCOPUS:84964813418
T3 - 2015 IEEE Photonics Conference, IPC 2015
SP - 589
EP - 590
BT - 2015 IEEE Photonics Conference, IPC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Photonics Conference, IPC 2015
Y2 - 30 August 2015 through 31 August 2015
ER -