Deeply etched inner-cavity pit reflector

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Date
2017-02
Authors
Dernaika, Mohamad
Caro, Ludovic
Kelly, Niall P.
Alexander, Justin K.
Dubois, Fabien
Morrissey, Padraic E.
Peters, Frank H.
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Institute of Electrical and Electronics Engineers (IEEE)
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Abstract
A deeply etched pit reflector is presented in this paper. The pit is not depth sensitive and has a comparable reflection and loss to a slot. Moreover, a two-section 750 μm laser cavity based on the pits is demonstrated. The laser achieved a side-mode suppression ratio of 40 dB, a linewidth of 280 KHz, and tuning across 40 nm.
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Keywords
Laser modes , Laser tuning , Light reflection , Optical elements , Optical fabrication , Optical loss , Semiconductor lasers , Bandwidth 280 kHz , Deeply etched inner-cavity pit reflector , Laser cavity , Optical reflection , Side-mode suppression ratio , Cavity resonators , Distributed feedback devices , Fabrication , Waveguide lasers , Optical waveguides , Wavelength 750 μm
Citation
Dernaika, M., Caro, L., Kelly, N. P., Alexander, J. K., Dubois, F., Morrissey, P. E. and Peters, F. H. (2017) 'Deeply etched inner-cavity pit reflector', IEEE Photonics Journal, 9(1), pp. 1-8. doi:10.1109/JPHOT.2017.2656252
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