Consiglio Nazionale Delle Ricerche

Paolo Laporta

Orazio Svelto

Sandro De Silvestri

Laser apparatus which generates a uniform laser beam of minimum divergence and maximum intensity includes a resonator cavity having a laser source and first and second mirror devices disposed on opposite sides of the source. The first mirror reflects pumped laser light within the cavity. The second mirror includes two mirror elements, both of which also reflect pumped laser light within the cavity. The two mirror elements of the second mirror device have specific configurations and a selected distance therebetween to cause the generation of a uniform output laser beam. That is, the laser light reflected from the second mirror element is dephased with respect to laser light reflected from the first mirror element by a whole number of periods of the laser light at the centerline between the first and second mirror elements. Also, laser light reflected from the second mirror is dephased with respect to laser light reflected from the first mirror by a whole number plus a half of the laser light period at the lateral edges of the first and second mirror elements.

Growing community of inventors

Cassina de'Pecchi MI, Italy

Paolo Laporta