Axial sub-Fourier focusing of an optical beam.
نویسندگان
چکیده
We demonstrate experimentally the generation of an optical beam having an axial focusing that is narrower than the Fourier limit. The beam is constructed from a superposition of Bessel beams with different longitudinal wave vectors, realizing a super-oscillatory axial intensity distribution. Such beams can be useful for microscopy and for optical particle manipulation.
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ورودعنوان ژورنال:
- Optics letters
دوره 42 16 شماره
صفحات -
تاریخ انتشار 2017