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  • 202512-12
    上集成微納結構的紅外偏振探測器的工作模式

    封面展示了一種片上集成微納結構的紅外偏振探測器的工作模式。該器件通過像素級偏振敏感微結構實現紅外入射光的全偏振信息解耦,并在像素級光吸收區將解耦后的偏振信息轉換為電信號。隨后,對讀出電信號進行校正與重構,以實現被測目標全偏振特征的實時提取。該片上集成微納結構的紅外偏振探測器具有高集成度和實時成像能力,可高效獲取被測目標及場景的材料成分、表面形貌和理化特性等,在**、民用及醫療等領域展現出重要應用價值。1、背景介紹偏振是電磁波重要的信息組成部分,指光波的振動方向。當光波與介質表...

  • 202512-11
    蝶形高速調制VCSEL激光器:為何成為高速通信的明日之星?

    在數據中心爆發式增長的今天,一種名為“蝶形高速調制VCSEL激光器”的技術正悄然掀起光通信領域的革命。當你刷著4K視頻或進行云端協作時,或許正是它在背后支撐著海量數據的閃電傳輸。一、什么是VCSEL激光器?從基礎說起對于非專業人士來說,激光器可能顯得陌生而遙遠。簡單來說,VCSEL的全稱是垂直腔面發射激光器,與我們常見的邊發射激光器不同,它的光束是從芯片表面垂直射出。這種獨特結構帶來了三大天然優勢:低閾值電流:能耗更低,符合綠色數據中心需求圓形對稱光斑:與光纖耦合效率高達90...

  • 202512-10
    基于錐形光纖與超柔電極的新型光電神經接口

    錐形光纖+超柔電極:打造更精準的腦科學工具在神經科學研究中,光遺傳學技術通過將攜帶光敏蛋白的病毒注入目標腦區,然后利用特定波長的激光激發或抑制神經元活動,能夠實現高精度的神經調控。然而,如果要同步觀察這些神經元在受到光刺激時的電生理信號,就需要將激光與電極“打包”到同一套裝置中。但一旦激光照射到電極位點,往往會產生額外的光電偽影噪聲,從而干擾真實神經信號的檢測。如圖1所示,本次發布的光電神經接口采用了錐形光纖作為光源引導的載體,并結合擁有超低厚度與柔性的超柔電極。這樣既能減輕...

  • 202512-8
    【資訊】晶體光路中實現了高效率的位置-動量(EPR)糾纏光子產生

    封面展示了基于非線性晶體的自發參量下轉化過程產生糾纏光子的示意圖。本文使用周期極化磷酸氧鈦鉀(PPKTP)晶體光路實現了高效率的位置-動量(EPR)糾纏光子制備,并利用鬼成像和鬼干涉技術驗證了糾纏特性,實驗設計相對簡單,可以為量子信息處理、量子成像等過程提供幫助。1、研究背景量子糾纏態在量子科學領域,已應用于量子密鑰分發、量子計算、量子中繼等領域。位置-動量糾纏(即EPR糾纏)描述一對在位置上相關,同時在動量上反相關的粒子,設xa、xb分別為粒子a和b的位置,pa、pb分別為...

  • 202512-5
    激光技術與磁性機器人結合的精確調控

    一、研究背景智能材料作為未來科技的關鍵組成部分,在許多領域中展現了巨大的應用潛力。然而,傳統的磁響應材料通常受到固定磁各向異性和單一響應模式的限制,難以滿足復雜環境和多功能任務的需求。例如,在醫療手術中,微型軟體機器人需要在狹窄空間中變形以適應復雜的解剖結構,同時還需承擔精準遞送藥物等多種功能。現有磁響應材料的局限性使得這些需求難以全面實現,因此開發具有可編程性和多響應能力的新型磁性材料成為研究熱點。此外,如何通過簡單、高效的技術在不破壞材料整體結構的情況下,實現多次重復編程...

  • 202512-4
    基于非線性晶體的自發參量下轉化過程產生糾纏光子

    封面展示了基于非線性晶體的自發參量下轉化過程產生糾纏光子的示意圖。本文使用周期極化磷酸氧鈦鉀(PPKTP)晶體光路實現了高效率的位置-動量(EPR)糾纏光子制備,并利用鬼成像和鬼干涉技術驗證了糾纏特性,實驗設計相對簡單,可以為量子信息處理、量子成像等過程提供幫助。1、研究背景量子糾纏態在量子科學領域,已應用于量子密鑰分發、量子計算、量子中繼等領域。位置-動量糾纏(即EPR糾纏)描述一對在位置上相關,同時在動量上反相關的粒子,設xa、xb分別為粒子a和b的位置,pa、pb分別為...

  • 202512-3
    空芯反諧振光纖:新一代“高功率光纖激光”傳輸技術

    一、背景介紹高功率光纖激光器憑借其轉換效率高、性能穩定、光束質量好以及結構緊湊等優點,被廣泛應用于工業加工、****、生物醫學、環境監測等各個研究領域,極大推動了人類社會發展。目前,光纖激光器在1µm波段已經實現了20kW連續激光單纖輸出,通過光束合成技術已經突破200kW激光輸出。在輸出激光脈寬方面,光纖激光器通過調Q、鎖模技術可以實現從準連續到飛秒全覆蓋,其中皮秒、飛秒光纖激光器峰值功率可以達到GW量級。在輸出波長方面,通過選用不同的稀土離子摻雜光纖以及光與物...

  • 202512-2
    推動飛秒激光在原子制造領域的應用

    封面展示了原子尺度下激光與材料的相互作用過程。基于飛秒激光直寫的原子制造過程主要通過表層原子修正實現原子結構的加工。封面強調了脈沖激光在原子及近原子尺度制造(ACSM)領域展現出的獨特性能優勢。通過對光與物質相互作用過程的原子級建模與仿真,有效研究了表層原子結構在不同激光能量下的動力學響應。這些工作為推動飛秒激光在原子制造領域的應用提供了理論指導。一、研究背景面向制造3.0時代的原子級制造技術發展迅速,催生了基于飛秒激光的非接觸式加工方案。相比之下,二維材料通過激光燒蝕可以直...

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