Magneto-optical Q-switching using magnetic garnet film with micromagnetic domains.

High-power giant pulses can be used applied in various applications with Q-switched micro-lasers. This method can shorten the pulse duration; however, active control is currently impossible in micro-lasers. To achieve precise pulse control while maintaining compactness and simplicity, we exploit the magneto-optical effect in magnetic garnet films with micromagnetic domains that can be actively controlled by a pulsed magnetic field. Our Q-switching technique enhances the output power by a factor of 4 × 103. Moreover, the device itself is smaller than other Q-switching devices. This novel type of active Q-switch can be combined with a micro-laser to obtain megawatt-order pulses.

Homelessness--on the health agenda in Wales?

Building a sustainable and inclusive future for Wales is at the heart of the constitution of the National Assembly for Wales, which means forging a crosscutting approach to social policy. Improving health is a strategic priority within this agenda, and homelessness and housing appear to be at the center of the Assembly Government's vision of developing sustainable and cohesive communities and promoting social inclusion. This article considers the links between homelessness and mental and physical ill health and the importance of combating homelessness and poor housing within the health agenda in Wales. The article cites the links between homelessness and health identified in the United Kingdom and in international research and highlights the growth in homelessness witnessed during the late 1990s and beginning of the 21st Century. The paper considers the significant increase of homelessness and assesses whether, in reality, sufficient practical measures are being taken to combat homelessness as a means of tackling ill health in Wales. The authors conclude that although Wales is making progress toward an integrated approach to health and well-being and that the need to tackle broader health determinants has gained recognition, investment in effectively tackling homelessness and exclusion is needed. Integrating the broader housing, homelessness, and health agendas could contribute to health gains in Wales.