Sebastian Kölle

2026

• Kölle S., Römer F., Witzigmann B.:
  Numerical study of stimulated emission in AlGaN quantum-wells for deep ultraviolet laser diodes
  Gallium Nitride Materials and Devices XXI
• Kölle S., Römer F., Witzigmann B.:
  Simulation of gain characteristics in AlGaN quantum wells under impact of inhomogeneous band broadening
  In: Applied Physics Letters 128 (2026), Article No.: 163306
  ISSN: 0003-6951
  DOI: 10.1063/5.0325429

2024

• Cardinali G., Kölle S., Schulz A., Susilo N., Hauer Vidal D., Guttmann M., Blonski MA., Römer F., Witzigmann B., Nippert F., Wagner MR., Wernicke T., Kneissl M.:
  Gain Characteristics of Optically Pumped UVC Lasers with Wide AlGaN Single-Quantum-Well Active Regions
  In: physica status solidi (a) (2024)
  ISSN: 1862-6300
  DOI: 10.1002/pssa.202400067
• Kölle S., Römer F., Cardinali G., Schulz A., Susilo N., Hauer Vidal D., Wernicke T., Kneissl M., Witzigmann B.:
  Optical Gain in AlGaN Quantum Wells: Impact of Higher Energy States
  In: IEEE Photonics Journal 16 (2024), p. 1-5
  ISSN: 1943-0655
  DOI: 10.1109/JPHOT.2024.3379231