title: Laser-induced damage threshold at chemical vapor deposition-grown diamond surfaces for 200-ps CO(2) laser pulses.
abstract: We report laser-induced damage thresholds (LIDTs) at chemical vapor deposition (CVD)-grown diamond surfaces for 200-ps CO(2) laser pulses, obtained with photoacoustic diagnostics. The results are compared with those at ZnSe and Ge surfaces under the same experimental condition. For 200-ps laser pulses, CVD diamond, ZnSe, and Ge were measured and found to have damage fluences of 1.2, 0.45, and 0.2 J/cm(2) , respectively, for a laser waist radius of 134 mum. Acoustic measurement indicated a relatively large variation in the LIDT of the CVD-grown diamond because of its polycrystalline structure.
authors.forename: A C
authors.initials: AC
authors.lastname: Chiang
authors.forename: Y Y
authors.initials: YY
authors.lastname: Lin
authors.forename: Y C
authors.initials: YC
authors.lastname: Huang
authors.forename: M
authors.initials: M
authors.lastname: Babzien