Zygo interferometer for the precious measurement of tiny refractive index change of two laser crystals
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- 作者：Ting Wu ; Yongling Hui ; Zou Yan ; Zhitong Li ; Qiang Li ; ncltlq@bjut.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Zygo interferometer ; Refractive index change ; YAG ; Yb3+ ; YAG
- 刊名：Optics & Laser Technology
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：89
- 期：Complete
- 页码：196-199
- 全文大小：604 K
文摘
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A new measurement method of Δn by using Zygo interferometer is proposed.
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This method is brief fast, accurate and dependable.
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The value of Δn is obtained by measuring ΔOPD of two crystals with equal thickness.
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Thickness uniformity of crystals should be strictly controlled to ensure accuracy.
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The experimental results show the final accuracy is up to 10−6 orders.