{"product_id":"harmonic-beam-splitter-hr257nm-ht515-1030nm-42-48","title":"Harmonic Beam Splitter HR257nm HT515+1030nm 42-48°","description":"\u003cdiv\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eHarmonic Beam Splitter HR257nm HT515+1030nm 42-48°\u003c\/strong\u003e (PP-UVFS-12.7-6.35-DM220-AR652) is a flat dichroic mirror engineered for spectral combining and separating in multi-line femtosecond optical systems. The double-coating design pairs high reflectance at the operating wavelength with high transmission at the complementary band — typically used in pump-probe, harmonic-cleanup, and OPA seed-pump combining geometries. Optimized for an angle of incidence of \u003cstrong\u003e48.0°\u003c\/strong\u003e at a center wavelength of \u003cstrong\u003e257 nm\u003c\/strong\u003e, the UVFS substrate carries an IBS-deposited dielectric stack engineered for high reflectance, low scatter, and minimal group-delay distortion of femtosecond and picosecond pulses (Optoman batch reference: PAN5658).\u003c\/p\u003e\n\n\u003cp\u003eThe 12.7 mm diameter form factor integrates directly into modern Yb-band, Ti:Sapphire, and harmonic-conversion beam paths where damage-tolerant reflectors are required. The IBS coating route delivers consistent batch-to-batch performance and excellent environmental stability under temperature, humidity, and vacuum cycling.\u003c\/p\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eArF excimer (193 nm) lithography front-ends\u003c\/li\u003e\n\u003cli\u003eDUV inspection systems\u003c\/li\u003e\n\u003cli\u003ephotoresist exposure tools\u003c\/li\u003e\n\u003cli\u003eDUV ablation chains\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction \u0026amp; Performance\u003c\/h3\u003e\n\u003cp\u003eSubstrate: \u003cstrong\u003eUVFS\u003c\/strong\u003e, polished to laser-grade surface quality. Coating: \u003cstrong\u003eIBS multilayer dielectric\u003c\/strong\u003e, optimized for the 257.0 nm design wavelength. Damage threshold: \u003cstrong\u003e0.2 J\/cm² @100 fs, 1 kHz\u003c\/strong\u003e — sufficient for typical kHz-class femtosecond amplifier outputs. The mount-side rear face is fine-ground for non-marring contact in standard kinematic mounts.\u003c\/p\u003e\n\n\u003cp\u003eLike all WaveQuanta ultrafast optics, this mirror ships matched to spec sheet, with reflectance and group-delay-dispersion measurements traceable to vendor batch records on request. Pair-matched sets and custom dimensions can be quoted on lead times of 4–8 weeks.\u003c\/p\u003e\n\n\u003ch3\u003eStorage \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eStore in original packaging at 25 °C and 40–60 % relative humidity. Clean only with high-purity (≥99 %) ethanol or acetone on lens-grade tissue using the drop-and-drag method. Avoid abrasive cloths, contact between the coating and any solid surface, and water-based cleaners; both can permanently damage the dielectric stack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Optoman","offers":[{"title":"Default Title","offer_id":47474001215642,"sku":"PP-UVFS-12.7-6.35-DM220-AR652","price":380.13,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/15_08150510838079910_350.png?v=1772512527","url":"https:\/\/waveqvanta.com\/products\/harmonic-beam-splitter-hr257nm-ht515-1030nm-42-48","provider":"WaveQuanta","version":"1.0","type":"link"}