Open AccessQuantum gas microscope assisted with T-shape vacuum viewports
Author(s) -
Ye Tian,
Zhongchi Zhang,
Jilai Ye,
Yajuan Zhao,
Jiazhong Hu,
Wenlan Chen
Publication year - 2022
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.471041
Subject(s) - microscope , optics , strehl ratio , numerical aperture , viewport , materials science , flatness (cosmology) , near field scanning optical microscope , optical microscope , vacuum chamber , physics , laser , wavelength , scanning electron microscope , cosmology , quantum mechanics , artificial intelligence , computer science , composite material
A quantum gas microscope plays an important role in cold-atom experiments, which provides a high-resolution imaging of the spatial distributions of cold atoms. Here we design, build and calibrate an integrated microscope for quantum gases with all the optical components fixed outside the vacuum chamber. It provides large numerical aperture (NA) of 0.75, as well as good optical access from side for atom loading in cold-atom experiments due to long working distance (7 mm fused silica+6 mm vacuum) of the microscope objective. We make a special design of the vacuum viewport with a T-shape window, to suppress the window flatness distortion introduced by the metal-glass binding process, and protect the high-resolution imaging from distortions due to unflattened window. The achieved Strehl ratio is 0.9204 using scanning-near-field microscopy (SNOM) fiber coupling incoherent light as point light source.