Previous experiment showed a diffractive-optic laser cavity consisting of a flat mirror and a single diffractive mirror for producing a flat-top laser beam. This paper shows that using a curved output mirror has several advantages. First, the cavity can be shortened substantially while still maintaining good discrimination against higher-order modes. Second, the total phase excursion can often be contained within 2π radians, eliminating the phase discontinuity present in the a diffractive structure. This makes it easier to coat the surface with multi-layer dielectrics for high reflection.
|Original language||English (US)|
|Number of pages||2|
|Journal||Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS|
|State||Published - Dec 1 1995|
|Event||Proceedings of the 1995 8th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Part 1 (of 2) - San Francisco, CA, USA|
Duration: Oct 30 1995 → Nov 2 1995