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|Type:||Artigo de periódico|
|Title:||Achievement Of λ/4000 Phase Distortion Sensitivity In The Measurement Of Optical Nonlinearities By Using A Modulated Z-scan Technique|
|Abstract:||We report on a modulation detection system that efficiently improves the signal-to-noise ratio and the maximum achievable sensitivity of Z-scan measurements of purely optical nonlinearities. By using suitable signal processing electronics and combining an averaging procedure with the harmonic motion of the sample around the Z-scan lens focus position, we demonstrate an increase of the measurement sensitivity of more than one order of magnitude, which is in principle independent of the particular Z-scan set-up employed. The consequence is that nonlinear phase distortions of λ4000 can be easily measured and improvements up to λ/105 are foreseen.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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