US 12,444,897 B2
Disc laser
Mordechai Brestel, Rehovot (IL); and Shlomo Turgeman, Rishon Letzion (IL)
Assigned to IDEA MACHINE DEVELOPMENT DESIGN AND PRODUCTION LTD., Rehovot (IL)
Appl. No. 17/631,524
Filed by IDEA MACHINE DEVELOPMENT DESIGN AND PRODUCTION LTD., Rehovot (IL)
PCT Filed Jul. 29, 2020, PCT No. PCT/IB2020/057127
§ 371(c)(1), (2) Date Jan. 31, 2022,
PCT Pub. No. WO2021/019447, PCT Pub. Date Feb. 4, 2021.
Claims priority of provisional application 62/881,139, filed on Jul. 31, 2019.
Prior Publication US 2022/0271490 A1, Aug. 25, 2022
Int. Cl. H01S 3/08 (2023.01); H01S 3/03 (2006.01); H01S 3/038 (2006.01); H01S 3/041 (2006.01); H01S 3/223 (2006.01)
CPC H01S 3/08059 (2013.01) [H01S 3/0305 (2013.01); H01S 3/0315 (2013.01); H01S 3/0385 (2013.01); H01S 3/0388 (2013.01); H01S 3/041 (2013.01); H01S 3/08095 (2013.01); H01S 3/2232 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
an annularly-shaped mirror whose inner surface has a high reflectivity at the wavelength at which said laser system is intended to lase, said annularly-shaped mirror having at least one opening in its surface;
a pair of planar metallic electrodes disposed proximate opposite edges of said annularly-shaped mirror, normal to the axis of said annularly-shaped mirror, said electrodes configured to have an RF field applied between them;
a pair of end mirrors disposed at said at least one opening, one of said end mirrors being a high reflectivity mirror, and the other of said end mirrors being a partial reflector; and
a ceramic material in the form of a disc, disposed in the internal volume of said annularly-shaped mirror, said ceramic material having a series of channels formed therein such that they generate a zig-zag pathway in the ceramic material, each leg of said zig-zag path being aligned at an angle such that said leg does not pass through the axis of said annularly-shaped mirror, and meets said annularly-shaped mirror at a different pair of points around the circumference of said annularly-shaped mirror,
wherein; said channels are adapted to contain a gain medium, and
wherein (i) said zig-zag path, (ii) said annularly-shaped mirror and (iii) said pair of end mirrors, together constitute a resonant cavity.