期刊
OPTICS LETTERS
卷 40, 期 24, 页码 5711-5713出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.40.005711
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- Air Force Office of Scientific Research (AFOSR) [FA9550-12-1-0482]
- Australian Research Council (ARC) [DP130101205]
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 similar to 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. (C) 2015 Optical Society of America
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