Abstract
We examine the properties of a Bessel–Gauss resonator design studied previously, and explain the bell-shaped modulation imposed on its lowest-order mode in terms of an equivalent linear cavity. We propose an unstable cavity to eliminate this effect, and obtain modes whose intensities resemble a true Bessel function along the diameter of the defining aperture of the resonator.
Original language | English |
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Pages (from-to) | 233-238 |
Number of pages | 6 |
Journal | Optics Communications |
Volume | 223 |
Issue number | 4-6 |
DOIs | |
Publication status | Published - 1 Aug 2003 |
Keywords
- bessel beams,di raction theory,gaussian,laser cavities,laser resonators,nondi racting beams,unstable resonators