Compensation of spatial dispersion of an acousto-optic deflector with a special Keplerian telescope

Optics Letters
Qinglei HuShaoqun Zeng

Abstract

Compensation of spatial dispersion caused by the acousto-optic deflector (AOD) when using a femtosecond laser is difficult across the whole scanning range of the system, and this is a significant impediment to its use. In conventional methods, the dispersion of the AOD was compensated only when it was at a particular position, while at other positions, the quality of the light beam was reduced. We developed a novel method for compensating the spatial dispersion within the entire scanning range using a special Keplerian telescope. Our experimental results show that the residual dispersion of the AOD is compensated sufficiently, and the focal spots of the laser reach the diffraction limit within a 40-MHz ultrasound bandwidth.

References

Apr 6, 1990·Science·W DenkW W Webb
Mar 6, 2003·IEEE Transactions on Bio-medical Engineering·Gary J BrouhardAlan J Hunt
Sep 4, 2007·Optics Letters·Carlos J Zapata-Rodríguez, María T Caballero
Jul 9, 2007·Optics Express·Adriaan van BrakelDavid J Richardson

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Citations

Feb 16, 2019·Optics Letters·Yiming GuoShaoqun Zeng
Oct 3, 2018·Optics Letters·Qinglei HuShaoqun Zeng

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