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15 February 2006 Wavelength tunable injection locking of high power super luminescent diode with 1.4 Watt diffraction-limited output
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Abstract
A new-type tunable high power wavelength tunable ASE light source is fabricated. The device length is 1960μm. The waveguide is 100μm wide and tilted at 6° from the facet normal. Without external feedback, this device can provide 1.4Watt ASE light per facet at 12Amp injection current. The emitted spectrum has 20nm FWHM. The far field has narrow divergence angle and the near field is smooth without filamentation. When external feedback is applied, the slope efficiency is increased from 0.15W/Amp to 0.2W/Amp. Only 6Amp injection current is required to reach 1.06Watt output. Feedback from a grating can be used to control the emission wavelength and improve the beam quality.
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Yi-Shin Su, Chih-Hung Tsai, and Ching-Fuh Lin "Wavelength tunable injection locking of high power super luminescent diode with 1.4 Watt diffraction-limited output", Proc. SPIE 6104, High-Power Diode Laser Technology and Applications IV, 610411 (15 February 2006); https://doi.org/10.1117/12.645032
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