Hou, L. , Haji, M. and Marsh, J.H. (2013) Mode locking at terahertz frequencies using a distributed Bragg reflector laser with a sampled grating. Optics Letters, 38(7), pp. 1113-1115. (doi: 10.1364/OL.38.001113)
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Abstract
We present a highly reproducible method of producing terahertz (THz) optical pulses using a class of mode-locked AlGaInAs/InP laser operating in the 1.55 μm wavelength range. The device uses a sample grating distributed Bragg reflector to provide strong frequency selectivity at the mode-locked frequency while the distributed reflectors relax the fabrication tolerances and ensure the cavity can self adjust to being an integral number of mode-locked periods in length. The measured devices provide nearly transform-limited pulse trains at 640 GHz or 1.28 THz with a high degree of controllability and operate with consistent performance over a wide range of drive conditions. Being low cost and compact sources of THz radiation, these lasers will open up many applications, including systems for high-speed optical communication and THz imaging.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Marsh, Professor John and Hou, Dr Lianping and Haji, Dr Mohsin |
| Authors: | Hou, L., Haji, M., and Marsh, J.H. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Optics Letters |
| Publisher: | Optical Society of America |
| ISSN: | 0146-9592 |
| ISSN (Online): | 1539-4794 |
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