A confocal optical microscope for detection of single impurities in a bulk crystal at cryogenic temperatures
Research output: Contribution to journal › Article
A compact sample-scanning confocal optical microscope for detection of single impurities below the surface of a bulk crystal at cryogenic temperatures is described. The sample, lens, and scanners are mounted inside a helium bath cryostat and have a footprint of only 19 × 19 mm. Wide field imaging and confocal imaging using a Blu-ray lens immersed in liquid helium are demonstrated with excitation at 370 nm. A spatial resolution of 300 nm and a detection efficiency of 1.6% were achieved.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Journal||Review of Scientific Instruments|
|Publication status||Published - 2016 Mar 1|