howto:align_beam_backreflection
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howto:align_beam_backreflection [2015/11/05 16:41] – sisamakis | howto:align_beam_backreflection [2015/11/06 10:19] – sisamakis | ||
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This is indeed normal, it is the result of using polarised light. Perfect alignment is reached when the lobes are more or less symmetric, that means they have roughly the same intensity. To reach this, you have to precisely position the beam to enter at the center of the objective entrance pupil, and the beam must be of course aligned with the optical axis of the objective. (Note that parallel beam displacement, | This is indeed normal, it is the result of using polarised light. Perfect alignment is reached when the lobes are more or less symmetric, that means they have roughly the same intensity. To reach this, you have to precisely position the beam to enter at the center of the objective entrance pupil, and the beam must be of course aligned with the optical axis of the objective. (Note that parallel beam displacement, | ||
- | {{:howto:backreflection_defocused.mp4|}} | + | {{:howto:backreflection_defocused1.mp4|}} |
The classic paper by E. Wolf " | The classic paper by E. Wolf " | ||
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- | Such images are used for the daily and fundamental alignment of the MicroTime 200. The detailed procedure is described in the user manual of MicroTIme 200. Although the MicroTime is extremely robust we suggest its sers to spend 5-10 minutes every day for verifying the quality of the alignment by inspecting the backreflection pattern. | + | Such images are used for the daily and fundamental alignment of the MicroTime 200. The detailed procedure is described in the user manual of MicroTIme 200. Although the MicroTime is extremely robust we suggest its sers to spend 5-10 minutes every day for verifying the quality of the alignment by inspecting the backreflection pattern. |
howto/align_beam_backreflection.txt · Last modified: 2022/08/29 11:17 by peter