Compact diffraction grating laser wavemeter for cold atom experiments

Chun-hua Wei; Shu-hua Yan; Tian Zhang

doi:10.1007/s11801-017-7092-8

Optoelectronics Letters ›› , Vol. 13 ›› Issue (5) : 335-338. DOI: 10.1007/s11801-017-7092-8

Article

Compact diffraction grating laser wavemeter for cold atom experiments

Chun-hua Wei¹^,²^,^a ,
Shu-hua Yan¹^,² ,
Tian Zhang²^,³

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Abstract

We present an innovative and practical scheme of building a miniaturized wavemeter, with the advantages of low cost, high reliability and simple structure. Through a calibration test by a 780 nm external cavity diode laser (ECDL), the results show that our system gets a wavelength resolution of better than 1 pm, measurement accuracy of better than 2 pm (corresponding to a frequency of 1 GHz), and a measurement range of 8.5 nm. Finally, the multi-mode comparison test between our system and a commercial spectrum analyzer further indicates the high-precision, miniaturization and low cost of the proposed system, which shows that it is particularly suitable for ECDL and atom cooling and trapping experiments. The system design, experimental results and conclusions are of definite significance as a fine reference for other ranges of wavelength.

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Chun-hua Wei, Shu-hua Yan, Tian Zhang. Compact diffraction grating laser wavemeter for cold atom experiments. Optoelectronics Letters, , 13(5): 335‒338 https://doi.org/10.1007/s11801-017-7092-8

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This work has been supported by the National Natural Science Foundation of China (No.51275523), the Specialized Research Fund for the Doctoral Program of Higher Education of China (No.20134307110009), the Graduate Innovative Research Fund of Hunan Province (No.CX20158015), and the Excellent Graduate Innovative Fund of NUDT (No.B150305).