Improved single-mode emission characteristics of long-wavelength wafer-fused vertical-cavity surface-emitting lasers by intra-cavity patterning

2013 ◽  
Author(s):  
Nicolas Volet ◽  
Tomasz Czyszanowski ◽  
Jarosław Walczak ◽  
Lukas Mutter ◽  
Benjamin Dwir ◽  
...  
Keyword(s):  
Single Mode ◽  
Cavity Surface ◽  
Emission Characteristics ◽  
Long Wavelength ◽  
Surface Emitting Lasers ◽  
Vertical Cavity Surface ◽  
Emitting Lasers ◽  
Vertical Cavity

scholarly journals Hexagonal transverse-coupled-cavity VCSEL redefining the high-speed lasers

Nanophotonics ◽  
2020 ◽  
Vol 9 (16) ◽  
pp. 4743-4748
Author(s):  
Elham Heidari ◽  
Hamed Dalir ◽  
Moustafa Ahmed ◽  
Volker J. Sorger ◽  
Ray T. Chen
Keyword(s):  
High Speed ◽  
Single Mode ◽  
Cavity Surface ◽  
Surface Emitting Lasers ◽  
Vertical Cavity Surface ◽  
Emitting Lasers ◽  
Injection Currents ◽  
Vertical Cavity ◽  
Coupled Cavity ◽  
Modulation Speed

AbstractVertical-cavity surface-emitting lasers (VCSELs) have emerged as a vital approach for realizing energy-efficient and high-speed optical interconnects in the data centers and supercomputers. Indeed, VCSELs are the most suitable mass production lasers in terms of cost-effectiveness and reliability. However, there are still key challenges that prevent achieving modulation speeds beyond 30s GHz. Here, we propose a novel VCSEL design of a hexagonal transverse-coupled-cavity adiabatically coupled through a central cavity. Following this scheme, we show a prototype demonstrating a 3-dB roll-off modulation bandwidth of 45 GHz, which is five times greater than a conventional VCSEL fabricated on the same epiwafer structure. This design harnesses the Vernier effect to increase the laser’s aperture and therefore is capable of maintaining single-mode operation of the laser for high injection currents, hence extending the dynamic roll-off point and offering increases power output. Simultaneously, extending both the laser modulation speed and output power for this heavily deployed class of lasers opens up new opportunities and fields of use ranging from data-comm to sensing, automotive, and photonic artificial intelligence systems.

The Effect of a Saturable Absorber in Long-Wavelength Vertical-Cavity Surface-Emitting Lasers Fabricated by Wafer Fusion Technology

2020 ◽  
Vol 46 (12) ◽  
pp. 1257-1262
Author(s):  
S. A. Blokhin ◽  
M. A. Bobrov ◽  
A. A. Blokhin ◽  
A. P. Vasil’ev ◽  
A. G. Kuz’menkov ◽  
...  
Keyword(s):  
Saturable Absorber ◽  
Cavity Surface ◽  
Fusion Technology ◽  
Long Wavelength ◽  
Wafer Fusion ◽  
Surface Emitting Lasers ◽  
Vertical Cavity Surface ◽  
Emitting Lasers ◽  
Vertical Cavity
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