• Toptica Imaging Extension: Fast and Flexible Imaging Platform for Terahertz Pro

    Toptica Imaging Extension: Fast and Flexible Imaging Platform for Terahertz Pro

    An accessory to the Toptica TeraFlash pro, the Toptica Imaging Extension utilizes two precise linear stages to scan a sample through the focus of the terahertz beam. The translational movement is synchronized with the shaker of the TeraFlash pro, resulting in a high measurement speed of up to 16 pixel/sec. A “basic” setup is available for researchers who wish to use their own optical components, and a “complete” version includes parabolic mirrors for beam shaping and focusing.

  • Toptica Teraflash Pro: Versatile time-domain terahertz platform

    Toptica Teraflash Pro: Versatile time-domain terahertz platform

    The Toptica TeraFlash pro, a table-top time-domain terahertz platform, sets new standards in terms of dynamic range, bandwidth and measurement speed. Owing to an advanced laser design and progress in photoconductive antennas, the system now achieves a peak dynamic range of 95 dB, and a bandwidth of 6 THz, all within less than 20 s. The highly precise mechanical delay stage enables the acquisition of 60 traces/s @ 50 ps, or 95 traces/s @ 20 ps.

  • Toptica's 49 "Shades of Infrared": Successful implementation of a superconducting IR spectrometer

    Toptica's 49 "Shades of Infrared": Successful implementation of a superconducting IR spectrometer

    Toptica's TeraScan has enabled the characterization of an astro-spectrometer in Chile: A team of Dutch and Japanese researchers, led by Akira Endo (University of Delft, Netherlands), successfully implemented a superconducting IR spectrometer at the Japanese ASTE (Atacama Submillimeter Telescope Experiment) radio telescope in Chile. The new instrument combines microwave kinetic inductance detectors with superconducting filters to measure 49 “shades of infrared”, i.e. frequencies between 332-377 GHz, in order to determine the redshift of distant galaxies. The frequency response of the IR spectrometer was tested with a TeraScan-1550 system from TOPTICA Photonics.

    Further reading: Endo et al., “Wideband on-chip terahertz spectrometer based on a superconducting filterbank”, J. of Astronomical Telescopes, Instruments, and Systems, 5(3), 035004 (2019).

    Image: ASTE telescope in North Chile, credits NAOJ

  • Toptica: Terahertz-Based Plastic Inspection


    Many polymeric materials appear – more or less – transparent for terahertz radiation. Researchers and engineers have successfully exploited this behavior for contact-free analysis and non-destructive testing. For example, pulsed terahertz radiation can uncover the thickness of an object, using an "echolocation" technique: In reflection-mode measurements, terahertz pulses strike the object under test, and its front and back side each reflect a part of the incident pulse. The time-of-flight difference, i.e. the time elapsed between the arrivals of the pulse echoes from either side, is directly proportional to the optical thickness of the layer. The method still works if the object consists of several different layers, and TOPTICA's customers have resolved layers down to 10-20 µm, even in ternary and quaternary materials.

  • Toptica TeraScan Frequency-Domain Terahertz Platform

    Toptica TeraScan Frequency-Domain Terahertz Platform

    TOPTICA’sTeraScan platforms are well-established “TopSeller” configurations for frequency-domain terahertz spectroscopy. The systems combine mature DFB diode lasers with state-of-the-art GaAs or InGaAs photomixers. The TeraScan 780 offers an outstanding bandwidth, and the TeraScan 1550 sets new benchmarks in terms of terahertz power and dynamic range. Both systems feature TOPTICA's proprietary “DLC smart” control electronics.

  • Toptica TeraSpeed Superfast Terahertz Screening Platform

    Toptica TeraSpeed Superfast Terahertz Screening Platform

    The TopticaTeraSpeed serves applications in quality control and process monitoring that require no spectral information, but call for terahertz intensity measurements at “extreme” speeds: the system is capable of detecting individual terahertz pulses at repetition rates as high as 100 MHz. An integrated data-processing unit converts the detected pulses to RMS values, enabling data streams at sampling rates up to 500 kHz – orders of magnitude faster than conventional terahertz systems. Bringing together several cutting-edge technologies, the TeraSpeed takes advantage of mature fiber laser technology, powerful photoconductive emitters and fast yet sensitive Schottky receivers.

  • Toptica TeraFlash: Time-domain terahertz spectroscopy

    Toptica TeraFlash: Time-domain terahertz spectroscopy

    TOPTICAintroduces the new TeraFlash system, a table-top platform for time-domain terahertz spectroscopy. The all-fibre design is based on mature 1.5 µm telecom technology, combining TOPTICA’s established femtosecond fibre lasers and state-of-the-art InGaAs antennas.

    Using a highly precise delay stage, the TeraFlash achieves a peak dynamic range of more than 70 dB. Users can choose between a “precisescan” mode and a “fast scan” mode. In “precise scan” mode a bandwidth of 4 THz and a resolution better than 10 GHz are attained. Alternatively, in “fast scan” mode, a pulse trace is acquired in only 50 ms. The fibre-coupled antenna modules can be conveniently arranged, depending on the needs of the experiment. Integrated in the system is TOPTICA’s FemtoFErb 1560, the most compact ultrafast laser on the market. The SAM mode-locked fibre oscillator and the usage of polarization-maintaining fibres ensure a high robustness and alignment-free, “hands-off” operation. The TeraFlash system is a perfect solution for applications such as high-bandwidth spectroscopy (e.g. of explosives or liquid crystals) and industrial process control.

  • Next Generation THz from Toptica: Fast, compact and cost effective

    TOPTICA presents new cw THz System with 1.5 µm lasers

    At the recent Photonics West exhibition, TOPTICA Photonics presented the most compact frequency-domain terahertz spectrometer built to-date. The system combines TOPTICA’s new TeraBeam, a highly integrated twocolor diode laser, with newly developed InGaAs/InP emitter and detector technology (Fraunhofer Heinrich-Hertz Institute, Berlin, Germany).

    The new cw THz system features a fast scan option, which reduces the acquisition times in cw THz spectroscopy by more than two orders of magnitude and acquires a complete THz spectrum (e.g. 50-1200 GHz, sub-GHz resolution) in less than a minute. Thus far, research in the field of frequency-domain (cw) terahertz has largely been carried out with GaAs photomixers, requiring laser wavelengths below 870 nm. Whilst excellent results in terms of bandwidth and signal quality have been obtained, the complexity of the optical source and a variety of non-standard optical components resulted in a price level inadequate for widespread industrial use.

  • Toptica: FemtoFErb – the most compact and cost effective laser source for THz generation

    Toptica: FemtoFErb – the most compact and cost effective laser source for THz generation

    TOPTICA’s new FemtoFErb is a turnkey laser system providing 100 mW average power at 1560 nm and a pulse duration of less than 150 fs at 100 MHz repetition rate. Using the same compact platform as TOPTICA’s PicoFYb, the FemtoFErb is a robust all-fiber setup based on Erbium doped fiber and saturable absorber mirror mode-locking (SAM) technology. The compact system includes all necessary control electronics and is equipped with a direct polarization maintaining fiber output interface. The FemtoFErb is an ideal solution for Time-Domain Terahertz generation or for metrology applications allowing highest accuracy laser-based distance measurements.

    Also recently released: The new FemtoFiber pro UCP provides a super-continuum between 980 – 1400 nm and more than 30 mW output power. It shows pulse durations even below 25 fs, the fastest one can get on the market from a turnkey SAM modelocked fiber laser system. The system is ideally suited for biophotonics, pump-probe experiments or fs?spectroscopy. The UCP option expands TOPTICA’s successful FemtoFiber proseries and will be live demonstrated at the forthcoming Ultrafast Phenomena conference exhibition.

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