Second Harmonic Generator (SHG)-cfm-facilities

Second Harmonic Generator (SHG)

Second harmonic generation (SHG), also called frequency doubling, is a nonlinear optical process, in which photons interacting with a nonlinear material are effectively ‘combined’ to form new photons having twice the frequency of initial photons. It is a special case of sum-frequency generation (2 photons), and more generally of harmonic generation.

Crystal materials lacking inversion symmetry can exhibit a so-called χ⁽²⁾ nonlinearity. This can give rise to the phenomenon of frequency doubling, where an input (pump) wave generates another wave with twice the optical frequency (i.e. half the vacuum wavelength) in the medium. This process is also called second-harmonic generation.

Specifications:

• Laser-Nd-YAG Laser (1064 nm)
• Make-THOR Labs

Research Focus:

• Second-Harmonic Imaging Microscopy (SHIM)
• Ultra-Short Pulse Measurement
• Study of Biological Structures and Surface Chemistry