Laser Package for cw THz Generation
- Two DL DFB lasers + FPGA-based frequency control
- Available wavelengths: 850 nm and 1550 nm
- Difference frequency tuning up to 1800 GHz
- Frequency accuracy 2 GHz absolute, 10 MHz relative
- Computerized frequency tuning via USB interface
The Standard Package offers the essential laser equipment for difference frequency generation in the terahertz range. It comprises two DFB lasers, fiber-optic beam combination, and driver electronics. The package is complemented by the TeraControl unit TC 110, an FPGA-based module for computerized frequency tuning, and digital lock-in detection of the terahertz photocurrent. – The Standard Package is available at 850 nm and 1550 nm.
Technical Information
Technical Information
| Wavelength range* | 853 + 855 nm | 1546 + 1550 nm |
| Lasers | 2x DL DFB | TeraBeam 1550 |
| Laser power (fiber output) | 2 x 50 mW | 2 x 30 mW |
| Scan range per diode | ± 1.3 nm | ± 2.2 nm |
| Frequency accuracy | 2 GHz absolute 10 MHz relative | |
| THz scan range | Typ. 0 – 1800 GHz | Typ. 0 – 1200 GHz |
| Optical isolation | Included, 60 dB per laser | Included, 80 dB per laser |
| Fiber coupling | Included, 2x2 fiber array | |
| Operating temperature | 15 – 30 °C | |
| Driver Electronics | SYS DC110 Twin DL | |
| Frequency control | External PC + TeraControl TC 110 (included) | |
| Lock-in amplifier | TeraControl TC 110 | |
| Computer interface | USB | |
| Computer software | Control program with GUI included | |
| Wavelength calibration files | Provided for both lasers | |
| Operating voltage | 100..120 V/ 220..240 V AC 50..60 Hz (auto detect) | |
| Power consumption | Typ. < 100 W, max. 300 W | |
| *Other ranges on request. | ||
cw terahertz Standard Package: tunable DFB diode lasers with fiber-optic beam combination.
1160 GHz frequency scan of an 855nm DL DFB laser, as used in the Standard Package.
TeraControl TC 110: Computerized frequency control and digital lock-in amplifier.
Options & Related Products
Options & Related Products
Options (850 nm only)
- High frequency modulation PCB: DL-Mod/DFB
- FET: bandwidth (-3 dB) of 20 MHz
- Bias-T: bandwidth > 300 MHz
Related Products
- DL DFB: Tunable distributed feedback diode laser
- High Power Extension for best terahertz SNR
- Phase Modulation with twin fiber-stretcher
- cw Terahertz Spectroscopy Kit: Leading-edge photomixer technology
- Femtofiber pro laser for time-domain terahertz applications
Technical Drawings
Applications
Download
Download
Scientific Paper: Precisely tunable continuous-wave terahertz source with interferometric frequency control
toptica_ScPaper_Sci_Instr_2008.pdf
toptica_ScPaper_Sci_Instr_2008.pdf
Scientific Paper: Coherent broadband continuous-wave terahertz spectroscopy on solid-state samples
toptica_ScPaper_New_J_Phys_2010.pdf
toptica_ScPaper_New_J_Phys_2010.pdf
Scientific Paper: Using a fiber stretcher as a fast phase modulator in a continuous wave terahertz spectrometer
Roggenbuck_JOSA_B_2012.pdf
Roggenbuck_JOSA_B_2012.pdf
Scientific Paper: Compact cw Terahertz Spectrometer Pumped at 1.5 µm Wavelength
toptica_ScPaper_J_Infr_THz_Waves_2010.pdf
toptica_ScPaper_J_Infr_THz_Waves_2010.pdf
Overview article: Laser-based terahertz generation & applications
toptica_lang_deninger_photonik_2012.pdf
toptica_lang_deninger_photonik_2012.pdf
