Figure 1

image

Download original image

Experimental setup. Dashed lines on AODy, AODx, L5, BFP and QPD represent conjugated planes. A half wave plate (HWP) maximizes transmission through the polarizing beamsplitter cube (PBS). The trap beam is reflected by a dichroic mirror (Chroma 725 DCSPXR) that also transmits the white light used to image the trapped bead on the CCD camera (U-Eye, UI 2240 SE MGL). A quarter wave plate (QWP) ensures that the backscattered light from the trapped bead, as shown in the insert, is reflected by the PBS and detected on either a QPD or a CCD camera. The interference pattern shown is observed when using the CCD camera. Focal lengths are: f1 = f2 = f3 = 150 mm, f4 = 200 mm, f5 = f6 = 50 mm, f7 = 300 mm and f8 = 400 mm.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.