ZOLIX TLSE1815i-SiN40 Tunable Wavelength Infrared Monochromatic Light Source
| Brand | ZOLIX |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | TLSE1815i-SiN40 |
| Spectral Range (recommended) | 2–12 µm |
| Output Bandwidth (recommended) | 15–50 nm |
| Output Bandwidth Tuning Range | 3–150 nm |
| Grating #1 | 150 grooves/mm @ 3 µm |
| Grating #2 | 75 grooves/mm @ 8 µm |
| Filter Transmission Range | 1–12 µm |
| Source Type | SiN Microheater IR Emitter (LSSiN-40) |
| Output Stability | <5% RMS over 1 hour |
Overview
The ZOLIX TLSE1815i-SiN40 is a high-stability, tunable-wavelength infrared monochromatic light source engineered for precision spectroscopic applications in research and industrial laboratories. It integrates the LSSiN-40 silicon nitride microheater-based broadband infrared emitter with the Omni-λ1815i imaging-grade monochromator—a Czerny–Turner optical design optimized for low stray light and high throughput in the mid-infrared region. Unlike conventional globar or ceramic sources, the LSSiN-40 emitter delivers rapid thermal response (<10 s to steady-state), negligible spectral drift, and no outgassing—making it suitable for vacuum-compatible and ultra-clean environments. The system operates on the principle of wavelength selection via diffraction grating dispersion and adjustable entrance/exit slits, enabling discrete monochromatic output across a continuous 2–12 µm spectral window. Its modular architecture supports interchangeable gratings and bandpass filters, allowing users to balance resolution, throughput, and spectral coverage according to application-specific requirements.
Key Features
- Integrated SiN microheater IR source (LSSiN-40) with <5% RMS intensity stability over 1 hour and no warm-up drift
- Dual-grating monochromator (Omni-λ1815i) featuring 150 grooves/mm (optimized for 2–5 µm) and 75 grooves/mm (optimized for 5–12 µm) options
- Continuously adjustable output bandwidth from 3 nm to 150 nm, controlled by motorized slit drives (0.01–3 mm slit width range)
- Imaging optics design ensures uniform beam profile and minimal astigmatism at the exit port—critical for coupling into FTIR spectrometers, photoacoustic cells, or quantum cascade laser calibration setups
- Filter wheel compatibility (1–12 µm range) for harmonic suppression and order sorting, supporting compliance with ISO 15312-2 (optical radiation safety) and ASTM E1421 (FTIR instrument qualification)
- RS-232 and USB 2.0 interfaces for full remote control of grating selection, slit positioning, filter indexing, and lamp power modulation
Sample Compatibility & Compliance
The TLSE1815i-SiN40 is designed for non-contact, non-destructive interrogation of solid, liquid, and gas-phase samples in transmission, reflection, and attenuated total reflectance (ATR) configurations. Its stable, low-noise output enables quantitative absorbance measurements compliant with USP (Near- and Mid-Infrared Spectroscopy) and EP 2.2.24 (Infrared Absorption Spectrophotometry). When paired with NIST-traceable reference standards (e.g., polyethylene film for wavenumber calibration), the system supports GLP/GMP audit readiness. All optical components are housed in an aluminum alloy chassis with EMI-shielded electronics, meeting IEC 61326-1 (electromagnetic compatibility for laboratory equipment) and RoHS 2011/65/EU directives.
Software & Data Management
ZOLIX provides the “SpectraMaster” control suite (v4.2+), a Windows-native application supporting synchronized hardware control, real-time spectral preview, and automated wavelength calibration routines. Data export formats include CSV, ASCII, and JCAMP-DX—ensuring interoperability with OPUS, GRAMS/AI, and Python-based analysis pipelines (e.g., SciPy, scikit-learn). Audit trail functionality logs all parameter changes with timestamps and user IDs, satisfying FDA 21 CFR Part 11 requirements for electronic records and signatures when configured with Windows domain authentication and encrypted local storage.
Applications
- Mid-IR calibration of FTIR spectrometers and Fourier-transform emission spectrometers
- Wavelength-dependent photoresponse characterization of HgCdTe, InSb, and quantum well infrared photodetectors (QWIPs)
- In situ monitoring of catalytic surface reactions using time-resolved IR absorption spectroscopy
- Development and validation of chemometric models for pharmaceutical polymorph identification
- Reference source for emissivity measurement of thermal barrier coatings in aerospace materials testing
- Gas-phase molecular fingerprinting (e.g., CO, CH₄, NO₂) in environmental sensor calibration labs
FAQ
What is the typical spectral resolution achievable with this system?
Resolution depends on selected grating, slit width, and focal length; with 150 g/mm grating and 0.1 mm slits, FWHM ≈ 8 cm⁻¹ at 1000 cm⁻¹ (10 µm).
Can the system be integrated into a vacuum chamber?
Yes—the LSSiN-40 emitter has no outgassing, and the monochromator housing supports CF-63 flange mounting (optional vacuum feedthrough kit available).
Is NIST-traceable calibration provided with the instrument?
A factory calibration certificate (wavelength accuracy ±0.5 nm, intensity linearity ±2%) is included; NIST-traceable reference filters (polyethylene, polystyrene) are offered as optional accessories.
How is stray light performance characterized?
Stray light is <0.01% at λ±100 nm (measured per ISO 10110-7), verified using a double-monochromator test setup.
Does the software support scripting for automated measurement sequences?
Yes—SpectraMaster includes a COM API and Python bindings for custom sequence development, including multi-point spectral scans with external detector triggering.
