Cascaded Brillouin lasing in monolithic barium fluoride whispering gallery mode resonators

Cascaded Brillouin lasing in monolithic barium fluoride whispering gallery mode resonators

Brillouin lasing with a CaF2 whispering gallery mode resonator.

Stimulated Brillouin scattering with both pump and Stokes beams in resonance with whispering gallery modes of an ultrahigh Q calcium fluoride resonator is demonstrated for the first time. The resonator is pumped with 1064 nm light and has 3 muW Brillouin lasing threshold. The scattering is observed due to the unique morphology of the resonator reducing the phase mismatch between the optical mod...

Pressure tuning of whispering gallery mode resonators

The effect of hydrostatic pressure on solid and hollow microsphere optical resonators was investigated. The primary goal was to explore the feasibility of a micro-optical pressure sensor based on whispering gallery modes (WGMs) and to quantify the deleterious effect of environmental pressure changes on other WGM-based sensors. Expressions were developed for WGM shifts due to changes in hydrosta...

Whispering-Gallery Mode Resonators for Detecting Cancer

Optical resonators are sensors well known for their high sensitivity and fast response time. These sensors have a wide range of applications, including in the biomedical fields, and cancer detection is one such promising application. Sensor diagnosis currently has many limitations, such as being expensive, highly invasive, and time-consuming. New developments are welcomed to overcome these limi...

Whispering Gallery Mode Resonators as Biosensors

The previous chapter introduces biosensor technologies according to the physical nature of their signal transduction processes. Optical biosensors are just one category that includes a wide array of novel devices. The present work deals with a technology based on whispering gallery mode (WGM) optical resonators [60, 61]. Understanding how they are fabricated and used is important for appreciati...