PYRONEER® – High-Performance Detectors
InfraTec's PYRONEER® detectors based on lithium tantalate (LiTaO
Type | close Number of measuring channelsNumber of Channels | close TO18, TO46: 5.4 mm in diameter Housing | close Size of the circular or rectangular aperture through which radiation hits the sensitive elements.Aperture (mm) | close Voltage Mode: The pyroelectric current is initially converted into a voltage by an RC network followed by a conversion to lower impedance. Current Mode: The pyroelectric current is permanently compensated by an OpAmp. The current required for this generates a voltage drop across an RC network in the feedback path which serves as the measurement signal. Operating Mode | close Integrated signal condition like integrated junction field effect transistors (JFET) for detectors in voltage mode or integrated operational amplifiers (OpAmp) for detectors in current mode. Amplifier | close A pyroelectric detector is sensitive to changes in temperature. Changes in ambient temperature have an influence on the measurement signal and shifts the operating point. This effect reduces a thermal compensation. Therefore, each pyroelectric element gets an additional optically inactive element, which compensates for unwanted currents. Thermal Compensation | close Patented micromechanical chip attachment (LowMicro) by InfraTec to reduce the effects of interfering impact sounds. Low Micro | close As a key parameter, the specific detectivity D* characterizes the signal-to-noise ratio of infrared detectors. Specific Detectivity* | |
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LIE-312 close 1Hz ... 4kHz, metal black coating | 1 | TO39 | ø 5.0 | Voltage Mode | JFET | 1.6 ** | |||
LIE-312f close 10Hz ... 4kHz, metal black coating | 1 | TO39 | ø 5.0 | Voltage Mode | JFET | 1.3 ** | |||
LIE-332f close 10Hz ... 4kHz, metal black coating | 1 | TO39 | ø 5.0 | Voltage Mode | JFET | 1.3 ** | |||
LSV-9313 close single channel; TO39 housing; medium chip size; JFET; voltage mode; short time constant, metal black coating | 1 | TO39 | ø 5.5 | Voltage Mode | JFET | 1.3 ** | |||
LSV-7313 close single channel; TO39 housing; small chip size; JFET; voltage mode; short time constant, metal black coating | 1 | TO39 | ø 5.5 | Voltage Mode | JFET | 1.3 ** | |||
DSV-7311 close single channel; TO39 housing; small chip size; JFET; voltage mode; DLaTGS - Deuterated L-Alanine doped TriGlycine Sulphate; short thermal time constant, metal black coating | 1 | TO39 | ø 5,5 | Voltage Mode | JFET | 3.3 **** |
* in 10
** in 10
*** bei R
**** in 10
LiTaO3 Detectors (Type LIE / Type LSV)
Pyroelectric detectors for use in analytical devices have been part of InfraTec’s portfolio for over 20 years. From the beginning, these detectors have been manufactured using high-quality, single-crystal lithium tantalate (LiTaO₃). This material provides robust and reliable performance, with a very low temperature coefficient and excellent long-term stability. Equipped with a specially adapted noble metal black coating on the pyroelectric elements, detectors with the type designation LIE continue to meet the highest standards required in FTIR spectroscopy.
To prepare for future demands, these proven detectors have undergone a redesign featuring a modernized internal structure that incorporates the latest manufacturing technologies. The resulting LSV series offers the same high level of performance in terms of sensitivity, stability, and signal quality, and will gradually replace the LIE detectors.
DLaTGS detectors (Type DSV)
The DLaTGS detectors are a real performance boost for FTIR spectroscopy. Based on the high-performance, pyroelectrically sensitive material DLaTGS (deuterated L-alanine doped triglycine sulphate), these detectors are clearly superior to LiTaO3 detectors with a triple detectivity (D*) at modulation frequencies in the kHz range. This combination of high pyroelectric coefficient, low heat capacity and low relative permittivity meets all requirements for achieving very good signal-to-noise ratios at very high modulation frequencies.
In Fourier transform infrared spectrometers (FTIR) they are considered the gold standard among infrared detectors.
DSV-7311 – The First DLaTGS Detector of the PYRONEER® Series
The newest member of the PYRONEER® product series is the high-performance detector DSV-7311. This detector with a pyroelectric element based on DLaTGS is an extraordinary performer:
Single channel detector in TO39 housing
One pyroelectric element with a diameter of 1.3 mm
Voltage mode with low-noise junction field effect transistor (JFET)
Specific detectivity (D*) of 3.3×10
8 Jones at 1 kHzThermal time constant of 12 milliseconds
Field of View (FOV) of 110°
DSV-7341: Innovative High-performance Detector with Thermal Stabilizing
InfraTec introduces an integrated thermal stabilization feature via thermo-electric cooler (TEC) for its PYRONEER® detectors with DLaTGS as pyroelectrical material. The first detector with the function, that ensures maximum temperature stability and measurement accuracy, will be the DSV-7341.
The TEC:
Maintains a constant detector chip temperature
Minimizes temperature-dependent signal drift
Compensates for environmental influences or varying radiation levels during FTIR measurements
This precise temperature regulation guarantees exceptional measurement stability, making the DSV detector ideal for both mobile and premium FTIR spectrometers. In addition, the true hermetic sealing of the ZnSe windows, commonly used in FTIR, protects against moisture and ensures long-term reliability.
By combining thermal control, efficient design, and modern packaging with a closed heatsink connection, the new PYRONEER® DSV detectors will achieve unmatched performance and independence from temperature and humidity. The ability to fit it with the known window materials of the series offers additionally maximum flexibility.
LiTaO3 vs. DLaTGS – Features in Comparison
| Detector | PYRONEER® LiTaO3 | PYRONEER® DLaTGS |
| Detector series | LSV, LIE-312(f), LIE-332(f) | DSV |
| Pyroelectric material | Lithium tantalate (LiTaO3) | Deuterated L-Alanine doped Tri-Glycine-Sulfate (DLaTGS) |
| D* Detectivity | + | +++ |
| Flat spectral response (2 ... 10 µm) | +++ | +++ |
| Thermal stabilization | No | In development |
| Operating mode | Voltage mode | Voltage mode |
| Active area | Ø 1.3 mm, Ø 2.0 mm | Ø 1.3 mm, further formats in development |
| Package | TO39 | TO39 |
| Response time | + | ++ |
Would You Like to Know More?
It is not unusual for tasks to be associated with special requirements. Discuss your specific application needs with our experienced engineers, receive further technical information or learn more about our additional services.
One-stop Solution
The production process for the DLaTGS detectors takes place from start to finish at InfraTec's headquarters in Dresden:
Growing the sensitive DLaTGS crystal material
Preparation of DLaTGS sensor elements
Assembly of the detector with applying the noble metal black layer
Thanks to its modular design, the PYRONEER® series can be flexibly adapted to your application-specific requirements.
For a Clear View
When selecting the entrance windows for the detectors, a wide range of materials is available that are characterized by consistently high transmission over a wide wavelength range. Up to now, they have been available with an optional anti-reflective coating:
Barium fluoride
Potassium bromide
Caesium iodite
Zinc selenid*
* Zinc selenide windows with an antireflection coating (ARC) are a good alternative for particularly harsh environments. ZnSe is inherently more resistant to moisture than KBr. Soldering the ZnSe window into the detector cap also creates a hermetically sealed connection, preventing moisture from entering the detector.
Learn more about Soldered ZnSe ARC window
In the future, InfraTec will also offer window materials that possess good transmission properties in the far infrared (FIR) and terahertz range. In particular, CVD diamond and polyethylene should be highlighted here.
Detector Search
InfraTec offers different product groups including approximately 50 standard pyroelectric detectors. Detectors with reduced microphone technology and integrated operational amplifier as well as digital detectors are part of our product range.
Choose your suitable infrared detectors with the help of our detailed detector search.
