Investigation of a linearly tunable external cavity diode laser in a configuration with single cavity all-dielectric thin-film Fabry-Pérot filter

Xiao Xiao; Fengqi Yu

doi:10.1117/1.3552698

Abstract

The single cavity all-dielectric thin film Fabry-Pérot filter (s-AFPF) has been investigated in this paper as a means of tuning the wavelength in an external cavity diode laser (ECDL), and the means of limiting longitudinal mode hopping has been also investigated. When a TE or TM plane wave irradiates an s-AFPF, a quasilinear relationship is found in a certain wavelength range between the optical intensity peak-transmittance wavelength of s-AFPF and the cosine value of plane wave incident angle at s-AFPF. Based on this feature, we proposed and investigated a configuration with an s-AFPF in an ECDL. By theoretical calculation, a mode-hop-free wavelength tuning range of about 8 nm around 1551.5 nm was achieved. Also, a method in further extending the width of the mode-hop-free wavelength region is proposed and discussed. The ECDL can be used in the application of environmental monitoring, atomic and molecular laser spectroscopy research, precise measurements, and so on.

Citation Download Citation

Xiao Xiao, Xiao Xiao, Fengqi Yu, Fengqi Yu, } "Investigation of a linearly tunable external cavity diode laser in a configuration with single cavity all-dielectric thin-film Fabry-Pérot filter," Optical Engineering 50(3), 034201 (1 March 2011). https://doi.org/10.1117/1.3552698 . Submission:

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