Angled-cavity lasers with photonic-crystal structure and high-order surface gratings. (9th December 2016)

• Record Type: Journal Article
• Authors: Liu, Y; Qu, H W; Zhao, S Y; Zhou, X Y; Wang, Y F; Zheng, W H
• Is Part Of: Semiconductor science and technology. Volume 32:Number 1(2017:Jan.)
• Publication Date: 2016-12-09
• Subjects: high-order surface grating -- high power -- low divergence angle -- narrow spectrum -- angled-cavity laser diodes; Semiconductors -- Periodicals; 621.38152
• DOI: 10.1088/1361-6641/32/1/01LT01
• Languages: English
• ISSNs: 0268-1242

Abstract

Abstract: 980 nm angled-cavity laser diodes with photonic-crystal structures and high-order surface gratings (HSGs) were first designed and fabricated. These lasers were fabricated using standard photolithography on a single-growth wafer with a photonic crystal structure. In addition, the angled-cavity lasers with asymmetric HSGs offer a simple solution for laser emission with a high power, low divergence angle, and narrow spectral width. A continuous-wave output power of 848 mW facet –1 was experimentally obtained for a 100 μ m-wide and 1 mm-long device. The lowest divergence angle and narrowest spectral width exhibited by these devices were 1.5° × 10.6° and 0.07 nm, respectively.