Photoluminescence from voids created by femtosecond-laser pulses inside cubic-BN
Photoluminescence from voids created by femtosecond-laser pulses inside cubic-BN
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DOI：
10.1364/ol.40.005711
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发表时间：
2015-12-15
期刊：
影响因子：
3.6
通讯作者：
Juodkazis, S.
中科院分区：
文献类型：
--
作者：
Buividas, R.;Aharonovich, I.;Juodkazis, S.
在紫外和可见光激发下，测量了飞秒激光改性的立方氮化硼（c-BN）内部区域的光致发光（PL）。观察到在红色光谱范围内的明亮PL，具有类似于4 ns的典型激发态寿命。尖锐的发射线是一致的PL固有的电子振动缺陷连接到氮空位的形成（通过弗伦克尔对）早期观察到的高能电子辐照和离子注入的c-BN。这些，以前被称为辐射中心，RC 1，RC 2和RC 3，已被确定在由单个飞秒激光脉冲形成的空隙的轨迹。该方法有望在c-BN中设计用于光子应用的色心。(C)2015美国光学学会
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