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首页> 外文期刊>Optics Letters >Angled cavity photonic crystal laser diodes with tilted sidewalls for improving far-field patterns
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Angled cavity photonic crystal laser diodes with tilted sidewalls for improving far-field patterns

机译：具有倾斜侧壁的倾斜腔光子晶体激光二极管，用于改善远场图形

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摘要

Angled laser diodes based on the longitudinal photonic band crystal (PBC) waveguide are first proposed and fabricated at a wavelength of 905 nm. Tilted sidewalls are utilized to reflect the light downward, thus enlarging the transverse mode size. In the experiment, continuous wave (CW) output power of 630 mW/facet is achieved, and stable and narrow divergence angles are obtained in the fast and slow axes, simultaneously. The transverse angle is reduced by 44% compared with that of the conventional broad area (BA) laser based on the same wafer, and the lateral angle is only 1.65° with on-axis main-lobe emission. This device shows a promising future for laser emission with ultra-narrow divergence and easy fabrication.
机译：首先提出了基于纵向光子带状晶体（PBC）波导的倾斜激光二极管，并制造了波长为905 nm的激光二极管。倾斜的侧壁用于向下反射光，从而增大了横向模式的尺寸。在实验中，连续波（CW）输出功率达到630 mW / facet，并且在快轴和慢轴上同时获得了稳定和狭窄的发散角。与基于同一晶片的常规广域（BA）激光器相比，横向角度减少了44％，并且在轴上主瓣发射时横向角度仅为1.65°。该器件具有超窄的发散度和易于制造的前景，可用于激光发射。

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