[MOS] March 16, 2010

[Zina Queen]

Seminar on

Modern Optics and Spectroscopy

Brillouin light scattering: 
The last unopened box

Andy Yun,
Harvard University,
Massachusetts General Hospital

Tuesday, March 16, 2010

12:00 - 1:00 p.m.


Spontaneous Brillouin scattering is based on the interaction of 
photons with phase-matched acoustic phonons (sound waves) inherently 
present in a sample. By detecting the spectral shifts in the 
scattered light, which are in the order of 10 GHz, the sample's 
hypersonic viscoelastic properties can be measured at microscopic 
spatial resolution without physical contact. Brillouin spectroscopy 
has long been known in material physics and environmental sensing. 
However, its potential applications in biomedical sciences have not 
been fully explored. We will discuss the recent development of a 
highly efficient spectrometer and demonstrate the feasibility of 
several promising applications including soft tissue biomechanics and 
microrheology.



Grier Room, MIT Bldg 34-401
Refreshments served after the lecture
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