Avantes AvaLight-XE Pulsed Xenon Light Source
| Brand | Avantes |
|---|---|
| Origin | Netherlands |
| Model | AvaLight-XE |
| Light Source Type | Pulsed Xenon Lamp |
| Illumination Mode | External Illumination |
| Wavelength Range | 200–1000 nm |
| Pulse Energy | 39 µJ (avg. 66 mW) |
| Fiber-Coupled Output Energy (200 µm) | 0.66 µJ/pulse (avg. 20 µW) |
| Fiber-Coupled Output Energy (600 µm) | 3.2 µJ/pulse (avg. 320 µW) |
| Fiber-Coupled Output Energy (1000 µm) | 7.4 µJ/pulse (avg. 744 µW) |
| Pulse Width (FWHM) | 5 µs |
| Pulse Delay | 6 µs |
| Lamp Lifetime | ≥10⁹ pulses |
| Power Supply | 12 VDC / 550 mA |
| Dimensions & Weight | 175 × 110 × 44 mm, 540 g |
Overview
The Avantes AvaLight-XE is a high-stability, pulsed xenon light source engineered for demanding UV–Vis spectroscopic applications requiring precise temporal synchronization and broad spectral coverage. Operating on the principle of high-voltage gas discharge in xenon, the AvaLight-XE generates intense, short-duration flashes across a continuous spectrum from 200 nm to 1000 nm—enabling high signal-to-noise ratio measurements in time-resolved fluorescence, UV absorbance, and transient photometric assays. Unlike continuous-wave (CW) sources, its microsecond-scale pulse structure (5 µs full width at half maximum, with 6 µs inter-pulse delay) eliminates thermal drift and photobleaching during sensitive sample interrogation, making it especially suitable for low-light or radiation-sensitive biological and chemical specimens. The source is designed for seamless integration into modular optical bench systems and fiber-coupled spectrometer platforms, notably Avantes’ own AvaSpec series, via the optional IC-DB26-2 synchronization cable.
Key Features
- Stable pulsed output with ≥10⁹ lifetime pulses, ensuring long-term reproducibility in routine QC and research environments.
- Flexible fiber coupling compatibility: optimized output delivery through 200 µm, 600 µm, and 1000 µm core diameter fibers—each with calibrated pulse energy and average power values traceable to NIST-traceable reference standards.
- Deep-UV upgrade path: compatible with Avantes’ specialized deep-UV xenon lamp option (AvaLight-XE-DUV), enabling reliable operation down to 190 nm when used with fused silica optics and appropriate filtering.
- Hardware-level synchronization: TTL-compatible trigger input/output allows deterministic timing alignment between flash events and spectrometer acquisition windows—critical for kinetic studies and lock-in detection protocols.
- Compact, fanless design (175 × 110 × 44 mm, 540 g) with regulated 12 VDC power input, supporting integration into space-constrained setups including glove boxes, environmental chambers, and portable field-deployable instruments.
Sample Compatibility & Compliance
The AvaLight-XE supports both solid and liquid samples via standardized accessories: the CUV-ATT-DA variable-aperture attenuator enables precise control of incident irradiance for transmission measurements, preventing detector saturation in high-absorbance regimes; the dedicated fluorescence sample holder (Cuvette Mount Kit) provides fixed-path-length alignment and minimizes stray light ingress. All optical interfaces adhere to ISO 17025-aligned calibration practices, and system-level validation can be performed per ASTM E275 (Standard Practice for Describing and Measuring Performance of UV–Vis Spectrophotometers) and USP Chapter <857> (Spectrophotometry and Light-Scattering). When operated within defined pulse repetition limits and with documented maintenance logs, the AvaLight-XE meets GLP audit requirements for instrument qualification (IQ/OQ/PQ) and supports 21 CFR Part 11-compliant data integrity workflows when paired with Avantes’ AvaSoft software with audit trail enabled.
Software & Data Management
Full control and synchronization are implemented through Avantes’ AvaSoft 8/10 software suite. Users configure flash count per acquisition cycle (1–1000 pulses), define external trigger modes (internal master, external slave, or free-run), and assign pulse timing offsets relative to spectrometer integration start. Raw intensity data—including pulse energy monitoring via integrated photodiode feedback—is logged alongside spectral acquisitions in HDF5 or ASCII formats, preserving metadata such as lamp age, cumulative pulse count, and ambient temperature. Exported datasets retain timestamped synchronization markers, facilitating post-acquisition cross-correlation with auxiliary sensors (e.g., temperature, pH, or electrochemical signals) in MATLAB, Python (via h5py), or LabVIEW environments.
Applications
- Time-resolved fluorescence spectroscopy: Excitation of fluorophores with sub-microsecond precision to resolve nanosecond decay kinetics without interference from CW background emission.
- UV–Vis absorbance quantification: High-dynamic-range measurement of low-concentration analytes (e.g., nucleic acids, proteins, catalysts) in cuvettes or flow cells using programmable pulse averaging to suppress shot noise.
- Photostability testing: Controlled irradiation of pharmaceutical formulations or OLED materials under repeatable UV fluence conditions, compliant with ICH Q1B photo-stability guidelines.
- Calibration source for radiometric validation: Traceable broadband output serves as secondary standard for spectroradiometer and integrating sphere system verification across the UV–NIR range.
- Multi-modal hybrid systems: Integration with Raman, LIBS, or laser-induced fluorescence (LIF) platforms where gated detection requires external optical triggering synchronized to pulsed excitation.
FAQ
Can the AvaLight-XE be used for continuous illumination?
No—the AvaLight-XE is strictly a pulsed source. It does not support CW operation. For continuous output, Avantes recommends the AvaLight-HAL-Tungsten or AvaLight-LED series.
Is the deep-UV version (AvaLight-XE-DUV) included by default?
No—the standard AvaLight-XE ships with a broadband xenon lamp rated for 200–1000 nm. The DUV variant is a separately ordered, factory-calibrated option requiring quartz–fluoride optics and UV-grade filters.
What is the recommended maintenance interval for lamp replacement?
Lamp replacement is only required upon reaching end-of-life (≥10⁹ pulses) or if spectral output degrades beyond ±3% deviation from baseline calibration—typically monitored via periodic NIST-traceable spectral checks every 6 months in GMP environments.
Does the device comply with CE, RoHS, and FCC electromagnetic compatibility directives?
Yes—the AvaLight-XE carries CE marking and conforms to EN 61326-1 (EMC for laboratory equipment) and EN 61000-3-2 (harmonic current emissions), as verified in Avantes’ EU Declaration of Conformity (DoC) available upon request.
Can I trigger the AvaLight-XE externally using a third-party DAQ system?
Yes—via the DB26 connector’s TTL-compatible trigger input (5 V logic, 10 kΩ impedance), enabling synchronization with National Instruments, Keysight, or custom FPGA-based controllers without intermediate signal conditioning.
