Spatial frequency modulated imaging with a single femtosecond pulse

Olivier Bernard; Seth Cottrell; Randy Bartels; Yves Bellouard; Jeff Squier

doi:10.1117/12.3001083

13 March 2024 Spatial frequency modulated imaging with a single femtosecond pulse

Olivier Bernard, Seth Cottrell, Randy Bartels, Yves Bellouard, Jeff Squier

Proceedings Volume PC12870, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications IX; PC1287006 (2024) https://doi.org/10.1117/12.3001083
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Spatial frequency modulated imaging (SPIFI) employs a structured line-shaped illumination, able to resolve beyond conventional resolution limits for coherent light with high speed. It produces image harmonics, with each order carrying a higher resolution. To date this method used rotating reticles to produce the necessary structured illumination, limiting image acquisition to about 100 μs. Here, we introduce a single-shot approach. We show that a super-resolved 1D image can be acquired with a single femtosecond pulse, with potential acquisition rates in the tens of kHz.

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Citation Download Citation

Olivier Bernard, Seth Cottrell, Randy Bartels, Yves Bellouard, and Jeff Squier "Spatial frequency modulated imaging with a single femtosecond pulse", Proc. SPIE PC12870, Real-time Measurements, Rogue Phenomena, and Single-Shot Applications IX, PC1287006 (13 March 2024); https://doi.org/10.1117/12.3001083

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KEYWORDS

Femtosecond phenomena

Femtosecond pulse shaping

Frequency modulation

Spatial frequencies

Image resolution

Coherence imaging

Optical coherence

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