| 简介 |
A tunable narrow-linewidth single-frequency linear-polarization laser device. The laser device comprises a heat sink (13), a pumping source (1) packaged on the heat sink (13), a first collimating lens (3), a laser back cavity mirror (4), a thermal optical tunable filter (5), a second collimating lens (7), a rare-earth-ion heavily-doped multicomponent glass optical fiber (8), a superstructure polarization-maintaining fiber grating (9), a polarization-maintaining optical isolator (11), a polarization-maintaining optical fiber (12), and a thermoelectric refrigerating machine (2, 6, 10). The laser device uses a short and straight single-frequency resonant cavity structure and uses heavily doped and high gain characteristics of the multicomponent glass optical fiber and then uses a frequency selection role and wavelength tuning function of the thermal optical tunable filter (5) and the superstructure polarization-maintaining fiber grating and combines a precision temperature adjustment technology, and by means of real-time adjustment of distribution of reflection wavelengths and transmission wavelengths, the laser device changes spectrum peak overlapping positions, so as to implement stable output of wide-tuning-range, extra-narrow-linewidth, high-extinction-ratio and high-output-power continuously tunable single-frequency linear-polarization laser. |
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