Schematic of TeraScan (red) with Tuning Range Extension (yellow).
Tuning Range Extension
Tuning range extensions for frequency-domain terahertz systems
- Third laser head – access to higher frequencies
- Exploits full bandwidth of InGaAs photomixers
- Tuning range up to 2.0 THz or 2.7 THz
- Frequency calibration for each 2-laser subset
- Requires TeraScan 1550 or TeraBeam 1550
TOPTICA is been able to push the frequency limits of frequency-domain spectrometers. Whilst one DFB laser at 1.5 µm offers a tuning range of approximately 600 GHz, a combination of three lasers covers the entire range from DC to 2.0 THz, or – using more elaborate combinations – even up to 2.7 THz. TOPTICA’s “Tuning Range Extension” thus provides access to frequencies that used to be beyond reach with commercial frequency-domain spectrometers.
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Specification
Specifications THz Tuning Extension 2.0 THz Tuning Extension 2.7 Base system TeraBeam 1550 (λ1 = 1550 nm, λ2= 1545 nm) 3rd laser λ3 = 1533 nm Difference frequency tuning - 0 - 2.0 THz
- 0 - 1.2 THz with lasers #1 and #2 ("TeraBeam")
- 0.9 - 2.0 THz with lasers #2 and #3
- 0 - 2.7 THz
- 0 - 1.2 THz with lasers #1 and #2 ("TeraBeam")
- 0.9 - 2.0 THz with lasers #2 and #3
- 1.5 - 2.7 THz with lasers #1 and #3
- 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: Resolution booster
- 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
