Terahertz wave spectroscopy and imaging analysis platform
The TAS7500TS is a Terahertz (THz) analysis system consisting of an optical fiber laser module and a data acquisition module, which are core parts of our terahertz spectroscopy system (TAS7500SP). Users complete the THz measurement system setup by simply connecting one of Advantest's THz source modules (TAS1110/TAS1130) and a detector module (TAS1230; sources and detectors sold separately). Flexible source selection and source/detector placement allows the user to generate customized experimental configurations.
Flexible configuration of THz source/detector modules and optical components
Up to 4 meter optical path length
Configure with up to 2 different THz source and 2 detector modules (Optional)
Low frequency, standard and broadband coverage THz wave detectors
Product Lineup and Applicable Fields
Field \ Product
TSCovers all TS bands 0.03 to 7 THz
SLLow-frequency spectroscopy 0.03 to 2 THz
SPStandard-band spectroscopy 0.1 to 4 THz
SUWide-band spectroscopy 0.5 to 7 THz
Academic research
Basic science
–
Physics, chemistry, medical, physiology
○
○
○
○
Material
–
Electronical and insulating materials for 5G and 6G
–
Radio wave absorber
○
○
–
–
Chemical
–
Liquid crystal
–
Polymer, rubber
–
Glass, etc.
○
–
○
○
Food
–
Beverage, alcoholic liquor, flavoring
○
–
○
○
Pharmaceutical
Pill, solid medicine, active pharmaceutical ingredient
–
Crystal, hydrate
–
Density, hardness, tensile strength
Biological medicine
○
○
○
○
Terahertz Optical Sampling System TAS7500TS
High-end system with fast analysis & best-in-class measurement accuracy
The system uses two channels of ultra short pulse lasers (1.55 ?m) with either biased output (for THz generation) or signal input (for THz detection). Advantest's unique optical sampling method, utilizing phase-modulated dual-laser-synchronized control technology without a mechanical optical delay line, enables extremely high speed terahertz spectroscopy.
Specifications
System configuration
Dual repetition rate synchronized fiber laser (for THz generation and detection), laser driver, synchronizer, data correction, and analysis PC
Excitation Laser
Center wavelength
1550 nm
Output power
≥20 mW (Option: Max. 50 mW) (*1)
Pulse width
≤50 fs (Using 1.5 m fiber) (*1)
Repetition rate
50 MHz
Optical output port
TFor THz generation: 1 ports, For THz detection: 1 ports
Affordably priced multi-purpose terahertz spectroscopy system with best-in-class measurement accuracy
The system uses two channels of ultra short pulse lasers (1.55 μm) with either biased output (for THz generation) or signal input (for THz detection). Based on Advantest's TAS7500TS high-end terahertz spectroscopy system, the TAS7400TS offers bes-in-class measurement accuracy at a lower price.
Specifications
System configuration
Dual repetition rate synchronized fiber laser (for THz generation and detection), laser driver, synchronizer, data correction, and analysis PC
Excitation Laser
Center wavelength
1550 nm
Output power
≥20 mW (Option: Max. ?50 mW) (*1)
Pulse width
≤50 fs (Using 1.5 m fiber) (*1)
Repetition rate
50 MHz
Optical output port
TFor THz generation: 1 ports, For THz detection: 1 ports
Easy to use all-in-one THz source; a photoconductive antenna and a hyper-hemispherical silicon lens are included in a fiber pigtailed compact housing.
THz waves are generated by introducing 1.55 μm ultra short laser pulses.
Suppression of THz wave amplitude variation caused by fluctuations of temperature using an on-state current monitor and a thermistor embedded in the bias circuit.
Structure of TAS1110/TAS1120
TSpectral amplitude of TAS1110 (Using THz wave detection module TAS1230)
Intended purpose
THz time-domain spectroscopy
Specifications
Items
Specification
Notes
TAS1110 (Standard)
TAS1120 (Low frequency range)
Generation method
Photoconductive antenna
Frequency range
0.1 to 4THz (*2)
0.03 to 2THz (*2)
Input power: 20 mW
Laser pulse width: 50 fs
Input Optical Fiber Connector
φ3mm 1550nm Polarization maintaining fiber
Length: 1.5 m
Size
55mm × 20mm × 20mm
Without Fiber pigtail
(*2): When using the TAS1230 detector module to measure samples with the TAS7500TS at 7.6GHz
Achieves excellent spectral flatness compared to a conventional photoconductive antenna (PCA) and significantly lower spectral absorption compared to using bulk crystals.
Compact and easy-to-operate: simply introduce excitation light into the input pigtail fiber.
Principal of TAS1300
Beam profile (focusing)
Spectral comparison of Cherenkov source and previous terahertz source
Intended usage
Broadband THz wave source for time-domain spectroscopy
Difference frequency generation of THz waves
THz frequency comb generation
Specifications
Items
Specification
Notes
Generation method
Cherenkov type THz wave generation using LiNbO3 waveguide
Bandwidth (SNR=1)
0.5 to 7THz (*2)
Input power: 20 mW
Laser pulse width: 50 fs
Input Optical Fiber Connector
φ3mm 1550nm Polarization maintaining fiber
Length: 1.5 m
Size
43mm × 24mm × 21mm
Without Fiber pigtail
(*2): When using the TAS1230 detector module to measure samples with the TAS7500TS at 7.6GHz
Terahertz Detector Module TAS1230
Easy to use all-in-one THz detector; a photoconductive antenna and a hyper-hemispherical silicon lens are included in a fiber pigtailed compact housing.
THz waves are sampled by introducing 1.55 μm ultra short laser pulses.
Built-in transimpedance (current-voltage transfer) amplifier with 500 kHz bandwidth makes for a simpler measurement system.
Specifications
Items
Specification
Notes
Detection method
Photoconductive antenna
Bandwidth (SNR=1)
0.1 to 4 THz (Generator: TAS1110)
Input power: 20 mW
Laser pulse width: 50 fs
0.5 to 7 THz (Generator: TAS1130)
Dynamic range (Peak level)
≥60 dB (Generator: TAS1110) ≥57 dB (Generator: TAS1130)
TIA sensitive
9.7 × 106 V/A
TIA bandwidth
500 kHz
-3 dB bandwidth
Input Optical Fiber Connector
φ3 mm 1550 nm Polarization maintaining fiber
Length: 1.5 m
Size
55 mm × 20 mm × 20 mm
Without Fiber pigtail
Optical stages dedicated for TAS7500TS/TAS7400TS, which achieve spectroscopic measurement (transmittance, reflectance and ATR measurements) and 2D spectroscopy/imaging (mapping) measurement
Outline Specifications of Spectroscopic Measurement Optical Sets
*1)
The NA conversion optical system for spectroscopic measurements (SHT-210101) is required.
*2)
Customers should prepare an optical system for measurement.
*3)
An acrylic cover is available. Please consult with us separately for detailed specifications.
*4)
The heights are the maximum values. They may differ depending on the measurement module to be mounted, etc.
Model
SHT-710068
SHT-710193
SHT-710157
Frequency band
2 THz
4 THz
7 THz
2 THz
4 THz
7 THz
Source module
TAS1120
TAS1110
TAS1130*1
TAS1120
TAS1110
TAS1130*1
Detector module
TAS1230
TAS1230
TAS1230
Mountable measurement module
Transmittance, Reflectance
Transmittance, Reflectance, ATR
Transmittance, Reflectance, ATR
–*2
Dry air purge cover
Not required
Not required
Required*3
Size (W×D×H:mm)*4
450 × 220 × 290
450 × 264 × 312
870 × 490 × 220
1) Terahertz spectroscopic measurement base for up to 4 THz (2 THz): SHT-710068
2) Terahertz spectroscopic measurement base for up to 7 THz: SHT-710193
This optical set can use various spectroscopic measurement modules for terahertz spectroscopic systems TAS7500 SL/SP/SU.
It does not require complicated optical adjustments and allows for easy measurement.
This compact spectroscopic module does not take time to perform dry air purge for moisture removal.
The transmittance module can also perform temperature control measurement by mounting an option (TAS1020/TAS1030).
SHT-710193 with the transmittance module (SHT-2100037) mounted
3) Stage for spectroscopic measurement (general-purpose type): SHT-710157
This optical set requires customers themselves to form an optical layout.
It has a wide sample and jig layout area and also allows measurements using a cryostat, etc.
The source and detector optical sections are slidable, which allows arbitrary optical layout for a transmittance or reflectance system, etc. according to the application.
Example of a measurement system using a large-sized cryostat