R
R. Firth
Publications - 4
Citations - 83
R. Firth is an academic researcher. The author has contributed to research in topics: Responsivity & Semiconductor laser theory. The author has an hindex of 3, co-authored 4 publications receiving 83 citations.
Papers
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Proceedings ArticleDOI
A high responsivity, broadband waveguide uni-travelling carrier photodiode
Cyril C. Renaud,Michael J. Robertson,D. C. Rogers,R. Firth,P. J. Cannard,R. Moore,Alwyn J. Seeds +6 more
TL;DR: In this article, a 2 A/W responsivity waveguide-uni-travelling carrier photodiode with a -3 dB electrical frequency response > 108 GHz is demonstrated.
Proceedings ArticleDOI
Photonic synthesis of THz signals
Alwyn J. Seeds,Cyril C. Renaud,Marianna Pantouvaki,Michael J. Robertson,Ian Francis Lealman,D. C. Rogers,R. Firth,P. J. Cannard,R. Moore,Russell M. Gwilliam +9 more
TL;DR: In this article, a review of photonic synthesis of high spectral purity THz signals is presented, including novel developments on optical frequency comb generation (integrated, 2THz span, 25 GHz spacing), frequency locking of semiconductor lasers (1kHz channel stability, 10 ns switching time) and high speed photodetectors integrated with antennas.
Photodiodes and Reflective Electroabsorption Modulators for mm-wave and UWB Applications
D.G. Moodie,D. C. Rogers,P. J. Cannard,A Borghesani,C.W. Ford,R. Firth,R. Cronin,Michael J. Robertson,David William Smith,Lalitha Ponnampalam,Cyril C. Renaud,Alwyn J. Seeds,Manoj P. Thakur,T Quinlan,SD Walker +14 more
Proceedings ArticleDOI
The development and application of novel Ru precursors for atmospheric pressure MOVPE growth of Ru doped current blocking layers
S. Dosanjh,P. J. Cannard,R. Firth,Ian Francis Lealman,R. Moore,L. Rivers,Michael J. Robertson,S. Rushworth,R. Odedra,Priyalakshmi Viswanathan,D.E. Sykes,A. Chew +11 more
TL;DR: IPCPRu and IBCPRu have been developed as alternatives to DMRu and their successful application for Ru doped InP current blocking layers in laser devices has led to their successful use in stability trials and atmospheric pressure MOVPE growth investigations as mentioned in this paper.