Cavity design for the generation of cylindrical vector beam with low M-squared beam quality

Abstract

In this thesis the design of the four-mirror resonance cavity is mainly used to generate cylindrical vector beam which is produced by separating e-ray and o-ray from birefringence crystal Nd:GdVO4 Radially polarized beam can be cause from e-ray and azimuthally polarized beam from o-ray In the stable range between 0 and 1 different patterns can be obtained by adjusting the length of the resonance cavity When the first length of Z1 is 9 61 cm the cylindrical vector beam can be observed in a wide range Under the specific length the cylindrical vector beam has a small divergence angle and power stability At the same configuration cylindrical vector beam has a good polarization in spatial distribution and the M-squared quality factor of the cylindrical vector beam is demonstrated with a low value

Date of Award	2019
Original language	English
Supervisor	Ming-Dar Wei (Supervisor)