Study on a Bessel–Gaussian beam laser

✍ Scribed by Yangwu Ma; Zhongjiao He; Di Liang

• Book ID: 104159749
• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 122 KB
• Volume: 34
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/s0030-3992(02)00090-7

✦ Synopsis

A new concept and the method are presented to obtain a laser beam output with high luminance and quality. Instead of using the conventional concept of "obtaining a single transverse mode through compressing the oscillating mode volume using a small aperture diaphragm", the large multimode volume and the high output power are obtained by studying the physical mechanism of the expansion and coupling between a Bessel beam and a Gaussian beam. A high quality light beam (close to the di raction limit) with high luminance and large intensity di erence between the center and the edge is achieved simultaneously.