{"product_id":"ac-coupled-high-gain-photodetector-20-mhz-bandwidth-60-db-gain-si-ingaas-400-1700-nm","title":"AC-Coupled High-Gain Photodetector – 20 MHz Bandwidth, 60+ dB Gain, Si\/InGaAs 400–1700 nm","description":"\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eProduct Description\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eAC-Coupled High-Gain Photodetector for Fast Optical Signal Detection\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eDesigned for high-sensitivity optical signal measurement and experimental photonics applications, this \u003cstrong\u003eAC-coupled photodetector\u003c\/strong\u003e combines low-noise performance, high adjustable gain, and bandwidth up to \u003cstrong\u003e20 MHz\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe detector supports interchangeable photodiodes for different wavelength ranges, including \u003cstrong\u003eSi for 400–1100 nm\u003c\/strong\u003e and \u003cstrong\u003eInGaAs for 800–1700 nm\u003c\/strong\u003e, allowing the same platform to be adapted to different optical detection requirements.\u003c\/p\u003e\n\u003cp\u003eWith gain exceeding \u003cstrong\u003e60 dB\u003c\/strong\u003e, the detector is suitable for detecting and amplifying relatively weak modulated or pulsed optical signals. A high-quality power adapter is included, with \u003cstrong\u003ecustomizable ±12V power configurations\u003c\/strong\u003e available for specific experimental setups.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC-Coupled Detection\u003c\/strong\u003e – Designed for detecting time-varying, modulated, and pulsed optical signals while suppressing DC components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Gain\u003c\/strong\u003e – Gain can exceed \u003cstrong\u003e60 dB\u003c\/strong\u003e, providing strong amplification for weak optical signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 20 MHz Bandwidth\u003c\/strong\u003e – Suitable for fast optical signal and pulse detection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Noise Design\u003c\/strong\u003e – Helps maintain signal quality during sensitive optical measurements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable Photodiode\u003c\/strong\u003e – Detector configuration can be changed according to the required wavelength range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Main Wavelength Options\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSi:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInGaAs:\u003c\/strong\u003e 800–1700 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Power Options\u003c\/strong\u003e – ±12V power configuration can be customized for specific applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Power Adapter Included\u003c\/strong\u003e – Ready for convenient laboratory use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Experimental Platform\u003c\/strong\u003e – Suitable for research, optical experiments, DIY projects, and custom photonics development.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDetector Options\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003ePhotodiode\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eWavelength Range\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eTypical Use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSi\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e400–1100 nm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVisible \u0026amp; near-infrared detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInGaAs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e800–1700 nm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNear-infrared \u0026amp; optical communication applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🔬 Optical signal detection\u003c\/li\u003e\n\u003cli\u003e🔴 Laser signal measurement\u003c\/li\u003e\n\u003cli\u003e📡 Optical communication experiments\u003c\/li\u003e\n\u003cli\u003e⚡ Fast optical pulse detection\u003c\/li\u003e\n\u003cli\u003e📈 Modulated light measurement\u003c\/li\u003e\n\u003cli\u003e🧪 Photonics research\u003c\/li\u003e\n\u003cli\u003e🔧 DIY optical experiments\u003c\/li\u003e\n\u003cli\u003e🛠️ Custom optical system development\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eHigh Gain. Wide Bandwidth. Flexible Detection.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWith \u003cstrong\u003e60+ dB gain, up to 20 MHz bandwidth, low-noise operation, and replaceable photodiodes\u003c\/strong\u003e, this AC-coupled photodetector provides a flexible platform for building and testing custom optical measurement systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Actual bandwidth, gain, noise performance, responsivity, and maximum input optical power depend on the selected photodiode and circuit configuration. Please verify the specific configuration and electrical requirements before ordering.\u003c\/p\u003e","brand":"Gearlair","offers":[{"title":"Default Title","offer_id":50655169478879,"sku":null,"price":420.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/3632\/2783\/files\/image__..._0_945a20c0-fe6c-451a-b519-d6506d9f9c7c.jpg?v=1785640746","url":"https:\/\/gearlair.com\/products\/ac-coupled-high-gain-photodetector-20-mhz-bandwidth-60-db-gain-si-ingaas-400-1700-nm","provider":"Gearlair","version":"1.0","type":"link"}