A proposal of broad-bandwidth vertical-cavity laser amplifier
- 1 November 1995
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 7 (11) , 1240-1242
- https://doi.org/10.1109/68.473458
Abstract
We propose a generic vertical-cavity amplifier (VCA) using a coupled-cavity design to broaden the bandwidth. Calculations are made for cavities with GaAs-AlAs and GaAs-Al/sub x/O/sub 2/ distributed Bragg reflectors (DBR). We found that at reasonable pumping levels the VCA increased the bandwidth by 85% (GaAs-AlAs) to 500% (GaAs-Al/sub x/O/sub 2/) as compared to a simple two-mirror structure similar to vertical-cavity surface-emitting lasers. In particular, the GaAs-AlAs VCA shows a bandwidth of 2 nm at 6-dB signal gain, while the GaAs-Al/sub x/O/sub 2/ VCA demonstrates a 5-nm bandwidth at 6-dB signal gain with no ripple at required single-pass power gain of /spl sim/2-2.5%. Furthermore, as large as 30-nm bandwidth in a lossless bandpass filter can be obtained.Keywords
This publication has 3 references indexed in Scilit:
- Performance predictions for vertical-cavity semiconductor laser amplifiersIEEE Journal of Quantum Electronics, 1994
- Theory of cascaded quarter wave shifted distributed feedback resonatorsIEEE Journal of Quantum Electronics, 1992
- Thin-Film Optical FiltersPublished by Taylor & Francis ,1986