Yang, Zhengyi
Haslehurst, Peter
Scott, Suzanne
Emptage, Nigel
Dholakia, Kishan
Article History
Received: 3 December 2015
Accepted: 7 April 2016
First Online: 24 May 2016
Competing interests
: The intellectual property rights contained in this publication are covered by patent applications which are licensed to M Squared Lasers Limited, Glasgow, UK.