SEMICONDUCTOR DEVICES

High power 980 nm broad area distributed feedback laser with first-order gratings

Zhen Dong, Yihao Zhao, Qi Zhang, Cuiluan Wang, Wei Li, Suping Liu and Xiaoyu Ma

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 Corresponding author: Yihao Zhao, Email: zyhhiaao@semi.ac.cn

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Abstract: To achieve high pumping efficiency and stability, a wavelength stabilized 980 nm broad area distributed feedback laser was realized. A nanoimprint lithography technique was used to fabricate the first-order gratings. The stripe width was 90 μm and the cavity length was 2 mm. Under continuous wave condition, the output laser power reached 1.2 W, with the slope efficiency of 0.7 W/A. The current and thermal dependence of the spectrum peak was measured to be approximately 0.19 nm/A and 0.064 nm/K respectively, and the wavelength-locking range reached over 50 ℃.

Key words: semiconductor laserwavelength stabledistributed feedbacknanoimprint



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Fig. 1.  Refractive index and wave intensity distribution of the 980~nm BA-DFB laser.

Fig. 2.  The calculated threshold current and slope efficiency versus $\kappa L.$

Fig. 3.  SEM image of buried grating structure.

Fig. 4.  $P$--$I$--$V$ curves of 980 nm BA-DFB laser.

Fig. 5.  Far-field spot of 980 nm BA-DFB laser.

Fig. 6.  (Color online) Spectra of (a) BA-DFB and (b) regular FP laser at various currents.

Fig. 7.  (Color online) Spectra of (a) BA-DFB and (b) regular FP laser at various heatsink temperatures, at 2 A CW current.

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    Received: 11 July 2015 Revised: Online: Published: 01 February 2016

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      Zhen Dong, Yihao Zhao, Qi Zhang, Cuiluan Wang, Wei Li, Suping Liu, Xiaoyu Ma. High power 980 nm broad area distributed feedback laser with first-order gratings[J]. Journal of Semiconductors, 2016, 37(2): 024010. doi: 10.1088/1674-4926/37/2/024010 Z Dong, Y H Zhao, Q Zhang, C L Wang, W Li, S P Liu, X Y Ma. High power 980 nm broad area distributed feedback laser with first-order gratings[J]. J. Semicond., 2016, 37(2): 024010. doi: 10.1088/1674-4926/37/2/024010.Export: BibTex EndNote
      Citation:
      Zhen Dong, Yihao Zhao, Qi Zhang, Cuiluan Wang, Wei Li, Suping Liu, Xiaoyu Ma. High power 980 nm broad area distributed feedback laser with first-order gratings[J]. Journal of Semiconductors, 2016, 37(2): 024010. doi: 10.1088/1674-4926/37/2/024010

      Z Dong, Y H Zhao, Q Zhang, C L Wang, W Li, S P Liu, X Y Ma. High power 980 nm broad area distributed feedback laser with first-order gratings[J]. J. Semicond., 2016, 37(2): 024010. doi: 10.1088/1674-4926/37/2/024010.
      Export: BibTex EndNote

      High power 980 nm broad area distributed feedback laser with first-order gratings

      doi: 10.1088/1674-4926/37/2/024010
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      • Corresponding author: Email: zyhhiaao@semi.ac.cn
      • Received Date: 2015-07-11
      • Accepted Date: 2015-08-16
      • Published Date: 2016-01-25

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