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Highly stable heterodyne interferometer without periodic nonlinearity
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Abstract
Recently the Joo-type heterodyne interferometer was invented to overcome the
periodic nonlinearity, but there was less discussion about the optics
thermal drift of Joo-type interferometer. In this paper, the optics thermal
drift model of Joo-type interferometer is established, and a highly stable
heterodyne interferometer is proposed. Experimental results show that, the
proposed interferometer's periodic nonlinearity is 0.035 nm, while its
optics thermal drift coefficient is 18 nm/℃ approximately.
Title: Highly stable heterodyne interferometer without periodic nonlinearity
Description:
Abstract
Recently the Joo-type heterodyne interferometer was invented to overcome the
periodic nonlinearity, but there was less discussion about the optics
thermal drift of Joo-type interferometer.
In this paper, the optics thermal
drift model of Joo-type interferometer is established, and a highly stable
heterodyne interferometer is proposed.
Experimental results show that, the
proposed interferometer's periodic nonlinearity is 0.
035 nm, while its
optics thermal drift coefficient is 18 nm/℃ approximately.
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