Photonic Crystal Surface Emitting GaSb-Based Type-I Quantum Well Diode Lasers
Journal Article
·
· IEEE Journal of Selected Topics in Quantum Electronics
- Stony Brook Univ., NY (United States)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
The GaSb-based epitaxially regrown monolithic diode PCSELs operating near 2 μm at room temperature in continuous wave regime and generating 30 mW of output power from 200 μm diameter aperture have been designed and fabricated. Here, the devices demonstrated CW threshold current density of about 500 A/cm 2. The laser output power was enhanced thanks to increased buried void area fill-factor in the photonic crystal layer with multiple voids per unit cell. The PCSEL generated ultra-low divergence donut shape beams at the currents near threshold. At higher injection currents, the device brightness was limited by excitation of the higher order lateral modes. Generation of the vector-vortex beams of different types by different band edge states of the buried photonic crystal was observed.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); US Army Research Office (ARO)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 2452786
- Report Number(s):
- BNL--226211-2024-JAAM
- Journal Information:
- IEEE Journal of Selected Topics in Quantum Electronics, Journal Name: IEEE Journal of Selected Topics in Quantum Electronics Journal Issue: 2 Vol. 31; ISSN 1077-260X
- Publisher:
- IEEE Lasers and Electro-optics SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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