Picture of smart phone

Open Access research that is better understanding human-computer interaction...

Strathprints makes available scholarly Open Access content by researchers in the Department of Computer & Information Sciences, including those researching information retrieval, information behaviour, user behaviour and ubiquitous computing.

The Department of Computer & Information Sciences hosts The Mobiquitous Lab, which investigates user behaviour on mobile devices and emerging ubiquitous computing paradigms. The Strathclyde iSchool Research Group specialises in understanding how people search for information and explores interactive search tools that support their information seeking and retrieval tasks, this also includes research into information behaviour and engagement.

Explore the Open Access research of The Mobiquitous Lab and the iSchool, or theDepartment of Computer & Information Sciences more generally. Or explore all of Strathclyde's Open Access research...

Semiconductor mode-locked lasers with integrated dispersion control

Strain, M.J. and Stolarz, P.M. and Sorel, M. (2011) Semiconductor mode-locked lasers with integrated dispersion control. In: 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011, 2011-05-22 - 2011-05-26.

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Semiconductor mode-locked lasers (MLL) often make use of distributed Bragg reflectors (DBRs) as one of the cavity reflectors, allowing both high peak reflectivity, and the central wavelength selection necessary for many applications[1,2]. However, although the passive filter bandwidth of these reflectors can be up to a few nanometres, the typical mode-locked 3dB bandwidth is significantly smaller, as shown in Fig.1(a). This bandwidth truncation leads directly to pulses with larger temporal widths than those generated in Fabry-Pérot (FP) type devices where the bandwidth can be an order of magnitude larger. Furthermore, the generated pulse-width from DBR MLLs is highly dependent on the injection current conditions, unlike their FP counterparts.