Pupil plane actuated remote focusing for rapid focal depth control

Laser scanning is widely employed in imaging and material processing. Common laser scanners are often fast for 2D transverse scanning. Rapid focal depth control is highly desired in many applications. Although remote focusing has been developed to achieve fast focal depth control, the implementation...

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Veröffentlicht in:Optics express 2020-08, Vol.28 (18), p.26407-26413
Hauptverfasser: Cheng, Zongyue, Jiang, Hehai, Gan, Wenbiao, Cui, Meng
Format: Artikel
Sprache:eng
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Zusammenfassung:Laser scanning is widely employed in imaging and material processing. Common laser scanners are often fast for 2D transverse scanning. Rapid focal depth control is highly desired in many applications. Although remote focusing has been developed to achieve fast focal depth control, the implementation is limited by the laser damage to the actuator near laser focus. Here, we present a new method named pupil plane actuated remote focusing, which enables sub-millisecond response time while avoiding laser damage. We demonstrate its application by implementing a dual-plane two-photon laser scanning fluorescence microscope for in vivo recording of calcium transient of neurons in mouse neocortex.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.402787