Schematic of TeraScan with Phase Modulation Extension (dark grey).
Phase Modulation Extension
Phase modulation for TeraScan or TeraBeam
- Resolution booster
- Phase and amplitude information at any frequency
- Enhanced thermal stability due to dual-fiber concept
- Path length modulation up to 3 mm @ 1 kHz
- Requires TeraScan or TeraBeam
cw terahertz spectroscopy based on photomixing offers the attractive feature of detecting both amplitude and phase of the terahertz wave. Determining the phase requires a modulation of the optical path length, or the terahertz frequency. The Phase Modulation Package offers a particularly fast and accurate technique to scan the terahertz phase, by using a symmetric setup with two fiber stretchers wound around piezo actuators. Users can thus retrieve full information on phase and amplitude of the terahertz wave - with single-Megahertz resolution!
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Specification
Specifications THz Phase Mod / NIR THz Phase Mode / IR Concept Twin fiber stretcher with piezo actuators Wavelength 780 nm, as defined by TeraScan 780 / TeraBeam 780 1.5 µm, as defined by TeraScan 1550 / TeraBeam 1550 - Additional Information
- Applications
- Downloads
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Literature
- Scientific Paper: Deninger, A., et al., 2.75 THz tuning with a triple-DFB laser system at 1550 nm and InGaAs photomixers, J. Infr. THz Waves (2015)
- Scientific Paper: Roggenbruck, A., et al., Using a fiber stretcher as a fast phase modulator in a continuous wave terahertz spectrometer, J. Opt. Soc. Am. B (2012)
- Scientific Paper: Stanze, D., et al., Compact cw Terahertz Spectrometer Pumped at 1.5 µm Wavelength, J Infrared Milli Terahz Waves (2010)
- Scientific Paper: Roggenbruck, A., et al., Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples, New Journal of Physics (2010)
- Overview Article: Lang, M., et al., Laser-based terahertz generation & applications, Photonik International (2012)
- Review paper: Naftaly, M., et al., Industrial applications of terahertz sensing: State of play, Sensors (2019)
- Scientific paper: Nellen, S., et al., Experimental comparison of UTC- and PIN-photodiodes for continuous-wave terahertz generation, J Infrared Milli Terahz Waves (2019)
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Related Products
- TeraScan: Complete cw-terahertz spectroscopy platform
- TeraBeam: Dual-color DFB lasers with digital driver electronics
- Phase Modulation Extension: Twin fiber stretcher
- Photomixers: Packaged modules with fiber pigtail
- Accessories: Schottky diodes and optomechanics
- TeraFlash pro: Versatile Time-Domain terahertz platform
- TeraFlash smart: Ultrafast Time-Domain Terahertz Platform
