High-Power Ultralow Divergence Edge-Emitting Diode Laser With Circular Beam

	High-Power Ultralow Divergence Edge-Emitting Diode Laser With Circular Beam
	Wang, L. J.; C. Z. Tong; S. C. Tian; S. L. Shu; Y. G. Zeng; J. M. Rong; H. Wu; E. B. Xing; Y. Q. Ning and L. J. Wang
	2015
发表期刊	Ieee Journal of Selected Topics in Quantum Electronics
卷号	21 期号:6 页码:9
摘要	A recognized drawback of edge-emitting diode lasers is their high divergence and elliptical beam shape since the first diode laser was demonstrated. In this paper, we demonstrated the ultranarrow circular beam emission from the broad area diode laser based on a modified Bragg-like waveguide. The low vertical divergence of 9.8 degrees with 95% power content and 4.91 degrees with the full-width at half-maximum was realized in the devices with 150 mu m stripe width. The maximum output power was 4.2 W under quasi-continuous-wave operation and presently limited by thermal rollover. The detailed design principle was presented and it was found that reducing the refractive index and thickness of the defect layer was able to improve the vertical divergence and achieve the stable circular beam emission by controlling the lateral current distribution using the deep stripe. The packaged device with 90 mu m stripe width demonstrated a maximum continuous wave power of 4.6 W at 10 degrees C. A direct fiber coupling efficiency of 90.6% had been achieved with a common fiber of 105 mu m core diameter.
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55458
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wang, L. J.,C. Z. Tong,S. C. Tian,et al. High-Power Ultralow Divergence Edge-Emitting Diode Laser With Circular Beam[J]. Ieee Journal of Selected Topics in Quantum Electronics,2015,21(6):9.
APA	Wang, L. J..,C. Z. Tong.,S. C. Tian.,S. L. Shu.,Y. G. Zeng.,...&Y. Q. Ning and L. J. Wang.(2015).High-Power Ultralow Divergence Edge-Emitting Diode Laser With Circular Beam.Ieee Journal of Selected Topics in Quantum Electronics,21(6),9.
MLA	Wang, L. J.,et al."High-Power Ultralow Divergence Edge-Emitting Diode Laser With Circular Beam".Ieee Journal of Selected Topics in Quantum Electronics 21.6(2015):9.

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