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Ð’ работе изучены методы ÑƒÐ»ÑƒÑ‡ÑˆÐµÐ½Ð¸Ñ Ð¼Ð¾Ñ‰Ð½Ð¾Ñтных и проÑтранÑтвенных характериÑтик полупроводниковых AlGaInAs/InP лазеров безопаÑного Ð´Ð»Ñ Ð³Ð»Ð°Ð· Ñпектрального диапазона 1400–1600 нм. Применены на практике уже ÑущеÑтвующие методы, ÑвÑзанные Ñ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ дизайна гетероÑтруктуры: иÑпользование широкого волновода, Ñмещение активной облаÑти отноÑительно центра волновода, введение барьерных Ñлоёв. Также показана возможноÑть Ð¿Ð¾Ð²Ñ‹ÑˆÐµÐ½Ð¸Ñ ÑффективноÑти лазерного диода за Ñчёт ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð¼ÐµÐ·Ð°Ð¿Ð¾Ð»Ð¾Ñковой конÑтрукции. ÐкÑпериментально иÑÑледовано влиÑние глубины Ñ‚Ñ€Ð°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¼ÐµÐ· на выходные характериÑтики лазерного диода, Ð´Ð»Ñ Ñтого Ñ Ð¿Ð¾Ð¼Ð¾Ñ‰ÑŒÑŽ поÑтроÑтовых технологий изготовлено два набора лазерных образцов Ñ Ñ€Ð°Ð·Ð½Ð¾Ð¹ глубиной меза-канавок и оÑущеÑтвлён ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑ Ð¸Ð·Ð¼ÐµÑ€ÐµÐ½Ð¸Ð¹, на оÑновании полученных результатов проведён Ñравнительный анализ. Показано, что конÑÑ‚Ñ€ÑƒÐºÑ†Ð¸Ñ Â«Ð¼ÐµÐ»ÐºÐ°Ñ Ð¼ÐµÐ·Ð°Â» ÑвлÑетÑÑ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ технологичной, раÑходимоÑть Ð¸Ð·Ð»ÑƒÑ‡ÐµÐ½Ð¸Ñ ÑоÑтавила 7.5–11.4 град., доÑтигнута мощноÑть 2.43 Ð’Ñ‚. УÑтановлено, что конÑÑ‚Ñ€ÑƒÐºÑ†Ð¸Ñ Â«Ð³Ð»ÑƒÐ±Ð¾ÐºÐ°Ñ Ð¼ÐµÐ·Ð°Â» демонÑтрирует низкий пороговый ток и выÑокую мощноÑть 2.55 Ð’Ñ‚, но требует ÑƒÐ»ÑƒÑ‡ÑˆÐµÐ½Ð¸Ñ Ð¾Ð¿Ñ‚Ð¸Ñ‡ÐµÑких характериÑтик и отработки технологии изготовлениÑ.
In this paper, we study methods for improving the power and emission characteristics of semiconductor AlGaInAs/InP lasers in the eye-safe spectral range 1400–1600 nm. We apply in practice the well-known methods associated with changing the design of the heterostructure: the use of a wide waveguide, the displacement of the active region relative to the center of the waveguide, and the growth of barrier layers. The possibility of increasing the efficiency of a laser diode by creating a mesa-stripe design is shown. The influence of the etching depth of mesa on the output laser characteristics is analyzed. For this experiment we have made two sets of laser samples with different mesa depths and have measured their characteristics. We have compared the two constructions. It is shown that the "shallow mesa" design is the most technologically advanced, the radiation divergence is 7.5–11.4 deg., the power reaches 2.43 W. The “deep mesa†design demonstrates a low threshold current and a high power of 2.55 W. But it requires improving the optical characteristics and refinement of manufacturing techniques.
eye-safe spectral range, моÑнÑй полÑпÑоводниковÑй лазеÑ, аÑиммеÑÑиÑÐ½Ð°Ñ Ð³ÐµÑеÑоÑÑÑÑкÑÑÑа, Ð¼ÐµÐ»ÐºÐ°Ñ Ð¼ÐµÐ·Ð°, безопаÑнÑй Ð´Ð»Ñ Ð³Ð»Ð°Ð· ÑпекÑÑалÑнÑй диапазон, asymmetric heterostructure, глÑÐ±Ð¾ÐºÐ°Ñ Ð¼ÐµÐ·Ð°, barrier layers, баÑÑеÑнÑе Ñлои, high-power semiconductor laser, AlGaInAs/InP, shallow mesa, мезаполоÑÐºÐ¾Ð²Ð°Ñ ÐºÐ¾Ð½ÑÑÑÑкÑиÑ, mesa-stripe design, deep mesa
eye-safe spectral range, моÑнÑй полÑпÑоводниковÑй лазеÑ, аÑиммеÑÑиÑÐ½Ð°Ñ Ð³ÐµÑеÑоÑÑÑÑкÑÑÑа, Ð¼ÐµÐ»ÐºÐ°Ñ Ð¼ÐµÐ·Ð°, безопаÑнÑй Ð´Ð»Ñ Ð³Ð»Ð°Ð· ÑпекÑÑалÑнÑй диапазон, asymmetric heterostructure, глÑÐ±Ð¾ÐºÐ°Ñ Ð¼ÐµÐ·Ð°, barrier layers, баÑÑеÑнÑе Ñлои, high-power semiconductor laser, AlGaInAs/InP, shallow mesa, мезаполоÑÐºÐ¾Ð²Ð°Ñ ÐºÐ¾Ð½ÑÑÑÑкÑиÑ, mesa-stripe design, deep mesa
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