{"product_id":"intense-thz-spectroscopy-system-turnkey","title":"Intense THz Spectroscopy System, Turnkey, \u003e 10 MV\/cm Peak Field","description":"\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Intense THz Spectroscopy System integrates a femtosecond ytterbium driver, a\nfew-cycle multi-pass-cell compressor and an intense terahertz time-domain spectrometer\ninto a single pre-aligned platform. It is built for groups that need field-driven,\nnonlinear and high-dynamic-range terahertz spectroscopy without assembling and\nstabilising the beamline themselves.\u003c\/p\u003e\n\u003cp\u003eWhat sets the source apart is the shape of its spectrum. Most terahertz sources spike\nat one frequency and fall away either side, so a measurement is strong at the peak and\nnoisy everywhere else. The STFT output instead stays within 10 dB of its peak right\nacross 1.0 to 4.6 THz - 3.6 THz wide, 2.2 octaves - and arrives in a single pulse. One\nscan gives even quality across the band, with no favoured colour.\u003c\/p\u003e\n\u003cp\u003eThe HELIOS-HE laser delivers up to 2 mJ at 10 to 100 kHz, and the HYPERION-G-HE\ngas-filled multi-pass cell compresses it to a typical 29.2 fs at better than 90 %\ntransmission. That clean, round, few-cycle drive is what turns pump energy into peak\nterahertz field: above 10 MV\/cm the pulse does not merely look at a sample, it drives it.\u003c\/p\u003e\n\n\u003ch2\u003eKey highlights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFlat top, not a spike:\u003c\/strong\u003e 1.0 - 4.6 THz held within 10 dB, 2.2 octaves,\nusable span out to 12 THz.\u003cbr\u003e\n\u003cstrong\u003eAbove 10 MV\/cm\u003c\/strong\u003e in everyday operation with a guaranteed floor of\n8 MV\/cm - comparable to the field holding electrons to atoms.\u003cbr\u003e\n\u003cstrong\u003eField, not power:\u003c\/strong\u003e the peak field is measured by Kerr rotation in\ndiamond and has been cross-checked against an independent calibration on another source\nto within about 8 %.\u003cbr\u003e\n\u003cstrong\u003eFew-cycle drive:\u003c\/strong\u003e HELIOS-HE at 1 - 2 mJ compressed to a typical 29.2 fs\nin the HYPERION-G-HE multi-pass cell, with a round, single-lobed beam rather than the\nbutterfly profile familiar from OPA-driven sources.\u003cbr\u003e\n\u003cstrong\u003eTwo focus stations:\u003c\/strong\u003e 0.14 mm for the strongest field and 0.26 mm where\nthe sample needs room, with terahertz and laser cameras at both.\u003c\/p\u003e\n\n\u003ch2\u003eFour configurations on one bench\u003c\/h2\u003e\n\u003cp\u003ePump and probe can each be the terahertz pulse or the laser, and the bench is laid out\nso all four pairings are reachable without rebuilding it. The laser addresses electrons\nacross the band gap; the terahertz field addresses what moves slowly - carriers, phonons,\nspins, bonds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptical pump, terahertz probe\u003c\/strong\u003e - a laser flash creates carriers and the\nterahertz pulse reads the conductivity that appears: photoconductivity, carrier lifetime,\ntransient screening.\u003cbr\u003e\n\u003cstrong\u003eOptical pump, optical probe\u003c\/strong\u003e - conventional transient absorption using the\ntwo laser arms already on the bench.\u003cbr\u003e\n\u003cstrong\u003eTerahertz pump, terahertz probe\u003c\/strong\u003e - the strong pulse drives the sample and a\nsecond terahertz pulse reads it: nonlinear terahertz response, field-driven phase changes,\nsaturation.\u003cbr\u003e\n\u003cstrong\u003eTerahertz pump, optical probe\u003c\/strong\u003e - the terahertz field distorts the sample and\nthe laser reads the induced birefringence.\u003c\/p\u003e\n\n\u003ch2\u003eWhat is included\u003c\/h2\u003e\n\u003cp\u003eSTFT flat-top terahertz source in the Terabullet enclosure, 120 x 90 cm footprint,\ndry-purged beam path with two focus stations.\u003cbr\u003e\nHELIOS-10W-HE or 20W-HE femtosecond ytterbium driver, 1 - 2 mJ at 10 - 100 kHz.\u003cbr\u003e\nHYPERION-G-HE gas-filled multi-pass-cell compressor, typical 29.2 fs output, optional\nhollow-core fibre cascade for few-cycle operation.\u003cbr\u003e\nMotorised delay line with 0.015 ps finest step, electro-optic sampling detection, lock-in\namplifier and optical chopper.\u003cbr\u003e\nReal-time terahertz camera with f\/0.7 imaging objective, plus built-in terahertz and laser\ncameras at both focus stations.\u003cbr\u003e\nControl and acquisition software, cabling and documentation.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eNonlinear and high-field terahertz spectroscopy. Field-driven material control in\ntwo-dimensional materials, semiconductors and correlated systems. Ultrafast\noptical-pump \/ THz-probe carrier dynamics - the switch-on of a semiconductor shows more\nthan 90 % signal change with a sub-picosecond edge. High-dynamic-range THz-TDS material\ncharacterisation. Real-time terahertz imaging and non-destructive inspection through\nplastic, paper, ceramics and composites.\u003c\/p\u003e\n\n\u003ch2\u003eDelivery and acceptance\u003c\/h2\u003e\n\u003cp\u003eEvery unit is factory integrated, aligned and acceptance tested before shipment, then\ncommissioned on site, so the system is experiment-ready on hand-over. The performance\nfigures quoted here are commissioning measurements on this system with the beam path in\nopen air; purging the path raises them. Full measurement records, methods and\nuncertainties are available on request, and final figures are confirmed at on-site\nacceptance.\u003c\/p\u003e\n\n\u003c!-- wq-internal-links --\u003e\n\u003ch2\u003eComponents used in this system\u003c\/h2\u003e\n\u003cp\u003eThe subsystems below are the same parts WaveQuanta supplies individually, so a bench built around this platform can be extended or serviced from the standard catalogue.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/thz-off-axis-parabolic-mirror-oap2612-through-hole\"\u003eoff-axis parabolic mirrors\u003c\/a\u003e — the terahertz relay is built from these\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/thz-gap-electro-optic-sampling-crystal-110\"\u003eGaP electro-optic sampling crystals\u003c\/a\u003e — detection measures field, not power\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/rigi-s2x-thz-camera\"\u003eRIGI S2X real-time terahertz camera\u003c\/a\u003e — the imaging channel of this system\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/thz-optical-chopper-model-300cd\"\u003eoptical chopper\u003c\/a\u003e — paired with the lock-in amplifier\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/thz-fiber-optical-delay-line-odl\"\u003efibre-coupled optical delay line\u003c\/a\u003e — an alternative to the motorised stage\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":49006541602970,"sku":"WQ-ITHZ-TK1","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/WQ-ITHZ-TK1-studio-card_e3bc4e3c-84a0-4e59-8555-178d083b90c9.jpg?v=1786691997","url":"https:\/\/waveqvanta.com\/products\/intense-thz-spectroscopy-system-turnkey","provider":"WaveQuanta","version":"1.0","type":"link"}