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Proceedings Paper

Red-emitting external cavity diode laser with high slope efficiency and narrow bandwidth
Author(s): Jiyeon Park; Hong Joo Song; Hong Man Na; Jun Ho Lee; Ilgu Yun
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Paper Abstract

External cavity diode laser with broad-area laser diode is operated up to the output power of 160 mW at the injection current of 850 mA and the bandwidth of 80 pm at a wavelength of 648 nm in external cavity. High slope efficiency of output power and narrow bandwidth using broad-area laser (BAL) diode, the width of active layer in the slow axis is too broad to select a specific wavelength. In this paper, more efficient wavelength selection method is investigated by confirming the tendency of grating grooves and designing to set up the wavelength dispersion direction along the fast axis of a solitary laser diode (LD) geometrically. Thus, the tunable external cavity diode laser module by using BAL diode is designed with an overall size of 49 mm x 52 mm x 48.5 mm. From injection current in the range of 650-900 mA, ECDL showed excellent wavelength locking behavior without a non-shift of the peak wavelength. Here, the tuning range is 4 nm with maintaining the narrow bandwidth of 80 pm and up to the output power of 100 mW. A side-mode-suppression of 36.5dB is also achieved at the output power of 160 mW and the injection current of 850 mA.

Paper Details

Date Published: 3 March 2015
PDF: 7 pages
Proc. SPIE 9343, Laser Resonators, Microresonators, and Beam Control XVII, 93431M (3 March 2015); doi: 10.1117/12.2079838
Show Author Affiliations
Jiyeon Park, Yonsei Univ. (Korea, Republic of)
Korea Electronics Technology Institute (Korea, Republic of)
Hong Joo Song, Korea Electronics Technology Institute (Korea, Republic of)
Hong Man Na, Korea Electronics Technology Institute (Korea, Republic of)
Jun Ho Lee, Korea Electronics Technology Institute (Korea, Republic of)
Ilgu Yun, Yonsei Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9343:
Laser Resonators, Microresonators, and Beam Control XVII
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko; Lutz Aschke; Kunihiko Washio, Editor(s)

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