{"product_id":"800nm-chirped-mirror-0fs-1","title":"800nm Chirped Mirror BS1631-25.4-1","description":"\u003cdiv\u003e\n  \u003ch3\u003eOverview\u003c\/h3\u003e\n  \u003cp\u003eThe \u003cstrong\u003e800nm Chirped Mirror 0fs² (BS1631-25.4-1)\u003c\/strong\u003e from Ultrafast Innovations is a specialized 50:50 polarizing beam splitter designed for ultrafast Ti:Sapphire laser systems operating at 800 nm center wavelength with broadband coverage from 500–1050 nm. This mirror delivers zero group delay dispersion (0 fs² GDD per bounce) at 45° angle of incidence for P-polarized light, making it ideal for splitting sub-10 femtosecond pulses without introducing temporal broadening.\u003c\/p\u003e\n  \u003cp\u003eUnlike standard chirped mirrors that compensate for positive or negative dispersion, this \u003cstrong\u003e0 fs² GDD design\u003c\/strong\u003e maintains pulse fidelity in low-dispersion optical paths where spectral phase manipulation is handled elsewhere in the system. The flat GDD response across the 500–1050 nm range ensures minimal pulse distortion for few-cycle pulses, making it essential for applications requiring precise beam splitting without altering temporal characteristics in CPA systems, OPCPAs, and ultra-broadband Ti:Sapphire oscillators.\u003c\/p\u003e\n  \n  \u003ch3\u003eApplications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTi:Sapphire CPA system beam splitting:\u003c\/strong\u003e Divide amplified pulses between pump and probe arms while preserving sub-20 fs pulse duration\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOPA and OPCPA pump-signal separation:\u003c\/strong\u003e Route 800 nm pump beams at 50% reflectance without introducing GVD into parametric amplification stages\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-branch ultrafast spectroscopy:\u003c\/strong\u003e Split broadband supercontinuum or few-cycle pulses for pump-probe, transient absorption, or HHG experiments\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDispersion-neutral interferometry:\u003c\/strong\u003e Enable balanced Mach-Zehnder or Michelson configurations for ultrafast metrology without temporal walk-off\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eConstruction \u0026amp; Performance\u003c\/h3\u003e\n  \u003cp\u003eManufactured on a 25.4 mm diameter, 1.0 mm thick UVFS substrate, this P-polarized beam splitter features an ion beam sputtered (IBS) multilayer dielectric coating optimized for 45° AOI. The coating delivers R\u0026gt;50% reflectance across the full 500–1050 nm bandwidth with a laser-induced damage threshold of 0.2 J\/cm² for femtosecond pulses. The precision-polished UVFS substrate ensures wavefront quality suitable for demanding ultrafast laser applications including chirped pulse amplification and optical parametric generation.\u003c\/p\u003e\n  \n  \u003ch3\u003eStorage \u0026amp; Handling\u003c\/h3\u003e\n  \u003cp\u003eOperate at 25 °C, 40–60% RH. Clean only with \u0026gt;99% optical-grade ethanol and lint-free lens tissue using single-pass drag method. Avoid abrasive cloths and water.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Ultrafast Innovations","offers":[{"title":"Default Title","offer_id":47948105679002,"sku":"BS1631-25.4-1","price":662.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/800nm-chirped-mirror-render_86eed3ec-3813-46da-a51e-673a79d5897d.png?v=1777648172","url":"https:\/\/waveqvanta.com\/products\/800nm-chirped-mirror-0fs-1","provider":"WaveQuanta","version":"1.0","type":"link"}