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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Infrared and laser spectroscopic characterization of aluminium defects in cultured quartz
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Infrared and laser spectroscopic characterization of aluminium defects in cultured quartz

机译：养殖石英中铝缺陷的红外和激光光谱表征

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摘要

Optical absorption at He-Ne and argon laser frequencies has been used to map the distribution of aluminium-hole centres, Al-H/sup +/, in irradiated and vacuum swept quartz. The absorption band associated with Al-h/sup +/ has a strong peak centered at 435 nm and a weaker one at 633 nm. Argon laser lines at 488 and 514.5 nm are close to the wavelength of the stronger peak, while the He-Ne line at 632.8 nm is nearly coincident with that of the weaker peak. Large variations in Al-h/sup +/ absorption for irradiated and vacuum swept crystals correspond to visually observed changes in coloration. The laser method is sensitive and nondestructive, and gives a quantitative measurement adaptable to computerized scanning and recording of data. Measurements of both Al-h/sup +/ and infrared-active aluminium hydroxide centres, Al-OH/sup -/, are used to evaluate the distribution of aluminium-associated defect centres and determine aluminium variations over an entire crystal.
机译：He-Ne和氩激光频率下的光吸收已用于绘制辐照和真空扫掠石英中铝孔中心Al-H / sup + /的分布图。与Al-h / sup + /相关的吸收带在中心波长为435 nm有一个很强的峰，而在633 nm附近有一个较弱的峰。 488和514.5 nm的氩激光线接近强峰的波长，而632.8 nm的He-Ne线与弱峰的激光线几乎重合。 Al-h / sup + /对辐照和真空扫掠晶体的吸收变化很大，对应于目测观察到的颜色变化。激光方法灵敏且无损，可进行定量测量，适用于计算机化的数据扫描和记录。 Al-h / sup + /和红外活性氢氧化铝中心Al-OH / sup-/的测量均用于评估铝相关缺陷中心的分布，并确定整个晶体中铝的变化。

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