The appearance of the first laser approximately 12 years after the invention of holography by
Gabor (1948) revolutionized the field of optical metrology. In fact, the invention of …

We present a comprehensive overview of sensor technology exploiting optical whispering
gallery mode (WGM) resonances. After a short introduction we begin by detailing the …

Understanding light interaction with metallic structures provides opportunities of
manipulation of light, and is at the core of various research areas including terahertz (THz) …

Photoacoustic tomography emerged as a promising tool for noninvasive biomedical imaging
and diseases diagnosis. However, most of the current piezoelectric ultrasound transducers …

A review of hollow core whispering gallery resonators (WGRs) is given. After a short
introduction to the topic of whispering gallery resonators we provide a description of …

Optical whispering gallery mode (WGM) microresonators are a class of optical devices with
a superior capability to confine light within a small volume. These devices offer the …

We describe a novel method for making microbottle-shaped lasers by using a CO2 laser to
melt Er: Yb glass onto silica microcapillaries or fibres. This is realised by the fact that the two …

The tunability of an optical cavity is an essential requirement for many areas of research.
Here, we use the Pound–Drever–Hall technique to lock a laser to a whispering gallery mode …

In this paper we present an experimental demonstration and a theoretical study on
mechanical tuning of whispering gallery modes (WGMs) of double-tailed silica …

We demonstrate a thermally tunable surface nanoscale axial photonics (SNAP) platform.
Stable tuning is achieved by heating a SNAP structure fabricated on the surface of a silica …