Analysis and improvement of optical frequency response in a long wavelength transistor laser
- 170 Downloads
Charge control model and rate equations have been exploited for the first time in order to glean the optical frequency response of a long-wavelength heterojunction bipolar transistor laser. For a 1.56 μm N-InP/p-InAlGaAs/N-InP fabricated transistor laser with a single quantum well, the optical bandwidth is estimated using this model. All parameters of the mentioned model have been computed for this new type of long wavelength transistor laser. It has been found that frequency response of this optoelectronic device has a 29 dB resonance peak which is not very desirable and is so higher than traditional GaAs transistor lasers. Furthermore, we have illustrated that the resonance peak will decrease and the optical bandwidth will increase, if we increase the width of the quantum well. Finally, we have analyzed that how base width affects on the optical bandwidth and resonance peak of frequency response. It has been proved that, there is a trade-off between larger bandwidth and lower resonance peak for base width effect.
KeywordsTransistor laser Long-wavelength Optical frequency response Quantum well Base width effect
Unable to display preview. Download preview PDF.
- Coldren L.A., Corzine S.W.: Diode Lasers and Photonic Integrated Circuits. Wiley, New York (1995)Google Scholar
- Kaatuzian H.: Photonics, vol. 1, pp. 193. Amirkabir University of Technology Press, Tehran (2005)Google Scholar
- Kaatuzian, H., Rahbardar, H., Taghavi, I.: Optical modulation bandwidth enhancement of heterojunction bipolar transistor lasers using base width variation. In: NUSOD 2011 proceeding (2011)Google Scholar
- Then H.W., Feng M., Holonyak N., Wu C.H.: Experimental determination of the effective minority carrier lifetime in the operation of a quantum-well n-p-n heterojunction bipolar light-emitting transistor of varying base quantum-well design and doping. Appl. Phys. Lett. 91, 033505–033508 (2007). doi: 10.1063/1.2759263 ADSCrossRefGoogle Scholar