Unparalleled sensitivity.
Low-intensity photoexcitation.
High-quality data.
Nanosecond transient absorption (ns-TA) spectroscopy is widely used to investigate long-lived excited states, charge transfer, and reaction kinetics. Its performance, however, is often limited by sensitivity, requiring higher excitation fluences or extensive signal averaging to detect weak signals.
Magnitude Instruments addresses this challenge with patented noise suppression technology. The enhanced sensitivity enables detection of weaker signals at lower excitation fluences while rapidly acquiring complete 2D transient absorption datasets, resulting in faster measurements, higher data quality, and more reliable characterization of challenging samples.
Key Features of Our ns-TA Spectrometers
No installation, no alignment - designed for researchers, not for laser specialists
Unprecedented detection limit 10⁻⁷ ΔO.D. (1h) enables detection of weak signals and scanning with low-intensity photoexcitation
Complete kinetics in seconds, high-resolution TA datasets in minutes
Configurations from UV to MIR, with the option for an external laser source
ns-TA Spectroscopy Systems – Characteristics and Design
Detect weaker signals
Some scientifically important excited-state processes generate extremely weak transient absorption signals. Charge-transfer states, long-lived intermediates, low-population excited states, and thin-film systems can all challenge conventional instruments.
Magnitude’s patented noise suppression technology achieves detection limits down to 10⁻⁷ ΔO.D., enabling observation of transient phenomena that would otherwise remain hidden in detector noise.
Higher sensitivity, better data
Higher sensitivity is not only about detecting weaker signals. It fundamentally improves how experiments are performed. Instead of increasing pump fluence to compensate for detector limitations, researchers can operate under significantly lower excitation conditions. This reduces nonlinear excitation effects, sample degradation, thermal artifacts and fluence-dependent distortions.
The result is cleaner datasets, more reliable kinetics, and improved confidence in physical interpretation.
Fast data acquisition
Transient absorption measurement time is ultimately governed by the achievable signal-to-noise ratio. Weak transient signals require extensive averaging, making the acquisition of complete spectral datasets time-consuming.
Magnitude Instruments combines its patented noise suppression technology with real-time kinetic acquisition using a fast photodetector to dramatically reduce this limitation. The complete transient kinetics is recorded directly from the detector response after each laser shot while fast automated wavelength scanning generates complete time- and wavelength-resolved datasets.
Complete high-resolution TA datasets are available in 5–20 minutes and at the detection limit of 10⁻⁷ ΔO.D. within one hour.
Designed for researchers, not laser specialists
Transient absorption spectroscopy is a powerful technique, but operating the instrument shouldn’t require advanced laser expertise.
Magnitude Instruments’ ns-TA spectrometers eliminate the complexity of traditional laser systems. No optical alignment. No installation procedure. No daily optimization. Just reliable performance, so researchers can focus on generating data instead of maintaining instrumentation.
Whether establishing a new transient absorption capability or replacing an existing system, Magnitude removes the barriers between scientific questions and experimental results.
Key Specifications of ns-TA Systems
Features
- Unprecedented 10⁻⁷ ΔD. detection limit (1h)
- Transmission, reflection and many other sample geometries
- 5 ns time resolution and over 100 ms delay time
- One-box, user-friendly device
- Internal (532 nm, 355 nm, 266 nm) and external (tunable) laser source possible
- Full time axis recorded in a single laser shot, enabling fast data acquisition
enVISTA™
Compact ns-TA spectrometer for research and teaching
- Detection limit: 10⁻⁷ ΔD. (1h); 10⁻⁶ ΔO.D. (<1 min)
- Time range: 5 ns to seconds
- Excitation wavelengths: 1064, 532, 355, 266 nm or tunable
- Probe spectral range: 300 – 1050 / 800 – 1650 nm
enVISion™
High-performance ns-TA spectrometer for demanding research
- Detection limit: 10⁻⁷ ΔD. (1h); 10⁻⁶ ΔO.D. (<1 min)
- Time range: 5 ns to seconds
- Excitation wavelengths: 1064, 532, 355, 266 nm or tunable
- Probe spectral range: 300 – 2550 nm (optional down to 250 nm)
inspIRe™
High-performance Mid-IR ns-TA spectrometer for transient infrared spectroscopy
- Detection limit: 10⁻⁷ ΔD. (1h); 10⁻⁶ ΔO.D. (<1 min)
- Time range: 5 ns to seconds
- Excitation wavelengths: 1064, 532, 355, 266 nm or tunable
- Probe spectral range: 2 – 11.7 µm (850 – 5000 cm⁻¹)
Explore Our ns-TA Spectroscopy Solutions
for Your Research
FAQ – Nanosecond TA Spectrometers
What is nanosecond transient absorption spectroscopy?
Nanosecond transient absorption spectroscopy (ns-TA or ns-TAS) studies excited-state dynamics on timescales from nanoseconds to milliseconds and is widely used in materials science, photocatalysis, photochemistry, and energy research.
Research into excited-state dynamics in the materials sciences, for example, ranges from photocatalysts and perovskite solar cells to organic semiconductors and quantum materials.
Why is sensitivity important in ns-TA spectroscopy?
Many important physical and chemical processes produce extremely weak transient signals. High sensitivity enables the detection of low excited-state populations, long-lived intermediates, and subtle charge-transfer dynamics that would otherwise be obscured by detector noise.
Equally important, higher sensitivity allows experiments to be performed at lower excitation fluences. Rather than increasing laser intensity to overcome detector limitations, researchers can probe samples under more realistic conditions while minimizing unwanted photophysical effects and sample degradation.
Why do lower excitation fluences improve data quality?
In many transient absorption experiments, excitation fluence is increased to compensate for weak signals approaching the detector noise floor. However, high excitation fluences can introduce nonlinear excitation effects, multiphoton processes, heating, and sample degradation, causing the measured dynamics to deviate from the sample’s intrinsic behavior. High detector sensitivity eliminates the need for excessive excitation, enabling measurements at lower fluences that produce cleaner data and more reliable kinetics.
Who is Magnitude Instruments?
Our partner Magnitude Instruments is a US-based company founded by scientists who developed a fundamentally new detection architecture to overcome sensitivity limitations encountered in their own ns transient absorption research. This innovation led to the creation of Magnitude Instruments, whose patented technology enables significantly higher sensitivity, improved data quality, and more reliable excited-state measurements.