title: Photoluminescence from voids created by femtosecond-laser pulses inside cubic-BN.
abstract: Photoluminescence (PL) from femtosecond-laser-modified regions inside cubic-boron nitride (c-BN) was measured under UV and visible light excitation. Bright PL at the red spectral range was observed, with a typical excited state lifetime of ∼4  ns. Sharp emission lines are consistent with PL of intrinsic vibronic defects linked to the nitrogen vacancy formation (via Frenkel pair) observed earlier in high-energy electron-irradiated and ion-implanted c-BN. These, formerly known as the radiation centers, RC1, RC2, and RC3, have been identified at the locus of the voids formed by a single femtosecond-laser pulse. The method is promising to engineer color centers in c-BN for photonic applications.
authors.forename: R
authors.initials: R
authors.lastname: Buividas
authors.forename: I
authors.initials: I
authors.lastname: Aharonovich
authors.forename: G
authors.initials: G
authors.lastname: Seniutinas
authors.forename: X W
authors.initials: XW
authors.lastname: Wang
authors.forename: L
authors.initials: L
authors.lastname: Rapp
authors.forename: A V
authors.initials: AV
authors.lastname: Rode
authors.forename: T
authors.initials: T
authors.lastname: Taniguchi
authors.forename: S
authors.initials: S
authors.lastname: Juodkazis