Physics
Scientific paper
Mar 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011opten..50c4201x&link_type=abstract
Optical Engineering, Volume 50, Issue 3, pp. 034201-034201-10 (2011).
Physics
Dielectric Materials, Laser Cavity Resonators, Laser Tuning, Optical Films, Semiconductor Lasers, Semiconductor Lasers, Laser Diodes, Design Of Specific Laser Systems, Resonators, Cavities, Amplifiers, Arrays, And Rings, Modulation, Tuning, And Mode Locking
Scientific paper
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.
Xiao Xiao
Yu Fengqi
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