Ultra-Fast modulation of mid infrared buried heterostructure quantum cascade lasers
- Resource Type
- Conference
- Authors
- Mottaghizadeh, A.; Asghari, Z.; Amanti, M.; Gacemi, D.; Vasanelli, A.; Sirtori, C.
- Source
- 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2017 42nd International Conference on. :1-2 Aug, 2017
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Power, Energy and Industry Applications
Signal Processing and Analysis
Quantum cascade lasers
Frequency measurement
Measurement by laser beam
Radio frequency
Modulation
Masers
- Language
- ISSN
- 2162-2035
We present the first direct observation of 26.5 GHz direct modulation of mid infrared buried heterostructure quantum cascade laser (QCL) emitting at 9 μm. For these measurements we have used an ultra-fast QWIP detector with 65 GHz bandwidth. As expected the modulation frequency bandwidth increases by increasing the laser driving DC current. Finally, we demonstrate that the laser cavity round trip frequency, f rt , can be injection locked by direct modulation of laser driving current hinting to mode-locked operation.