Long-term frequency stabilisation of a CW single-frequency laser using a high-precision wavelength meter

Sergey Kobtsev; Stepan Kandrushin; Andrey Potekhin

doi:10.1117/12.761813

5 March 2008 Long-term frequency stabilisation of a CW single-frequency laser using a high-precision wavelength meter

Sergey Kobtsev, Stepan Kandrushin, Andrey Potekhin

Proceedings Volume 6871, Solid State Lasers XVII: Technology and Devices; 68712H (2008) https://doi.org/10.1117/12.761813
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

In the present paper it has been demonstrated that the suggested and for the first time experimentally tested method for considerable reduction in long-term radiation frequency drift of CW single-frequency Ti:Sapphire and dye lasers based on a fast high-precision radiation wavelength meter and a digital-analogue feed-back system can present an efficient alternative to conventional methods for long-term frequency stabilisation. Long-term frequency drift of the lasers was improved from ~450 MHz/h in free-running regime to less than 40 MHz/h in the regime of frequency stabilisation. Application of a wavelength meter as a spectral reference allows reduction in the long-term frequency drift down to the level of residual drift inherent in the wavelength meter. An interesting prospective feature of the suggested method is the possibility to use a wavelength meter for periodical operative wavelength correction of more than one laser, which can also be performed remotely when a laser and the wavelength meter are connected with a long optical waveguide and the wavelength value is transmitted though the Internet. The proposed method of stabilisation can be used for single-frequency lasers of any type (solid-state, diode, fibre, dye lasers, etc.), in which continuous controlled radiation frequency detuning is possible.

Citation Download Citation

Sergey Kobtsev, Stepan Kandrushin, and Andrey Potekhin "Long-term frequency stabilisation of a CW single-frequency laser using a high-precision wavelength meter", Proc. SPIE 6871, Solid State Lasers XVII: Technology and Devices, 68712H (5 March 2008); https://doi.org/10.1117/12.761813

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