Single-shot measurement of nonlinear absorption and nonlinear refraction.
A single-shot method for measurement of nonlinear optical absorption and refraction is described and analyzed. A spatial intensity variation of an elliptical Gaussian beam in conjugation with an array detector is the key element of this method. The advantages of this single-shot technique were demonstrated by measuring the two-photon absorption and free-carrier absorption in GaAs as well as the nonlinear refractive index of CS2 using a modified optical Kerr setup.
Jayabalan
J
J
Centre for Advanced Technology, Ultrafast Studies Section, Indore, India. jjaya@cat.ernet.in
Singh
Asha
A
Oak
Shrikant M
SM