The best instrument available for high-resolution mid-IR spectroscopy is the CW-MHF Mid-IR Laser. For users who want phase-continuous tuning to prevent spectral line hopping, high spectral resolution, or both, the DRS Daylight CW-Mode-Hop-Free laser is a suitable option.
In any laser system, achieving narrow-linewidth functioning and MHF tuning is challenging. The CW-MHF system, which is unique in the industry, offers MHF tuning to > 30 cm–1 and frequently to > 100 cm–1, together with open-loop linewidths of ≤ 5 MHz (around 100 ms).
The CW-MHF laser achieves this performance using a highly stable laser cavity intended to limit sensitivity to acoustic perturbation, led by finite element analysis. This design draws on years of expertise in precision engineering and manufacturing.
The CW-MHF laser offers two methods for changing wavelength: current modulation and PZT modulation. This unique combination of modulation capabilities, narrow-linewidth operation, and broad MHF tuning allows locking to a wavelength reference and/or high-resolution spectroscopy.
Highlights
Features & Benefits
- Ultra-quiet, with RIN as low as -140 dBc/Hz, enables higher-SNR spectroscopy
- Superb TEM00 beam quality, low beam pointing
- SideKick™ controller, GUI, and SDK included with all systems
- Proprietary HFQD™ circuitry to safeguard the chips
- Wavelength availability: < 4 to >11 µm
- MHF tuning range: ≥ 30 to 100 cm-1 (typical, depending on model)
- CW power > 70 mW typical*
- Linewidth (FWHM < 5 MHz (10 ms) and < 10 MHz (1s)
- Wavelength accuracy of ± 0.5 cm-1 (± 15 GHz), unidirectional
Techniques and Applications
The CW-MHF Mid-IR Laser’s distinct feature set and industry-leading performance allow for a diverse variety of sensitive spectroscopy techniques and applications:
Spectroscopy Techniques
- Photoacoustic
- Gas phase
- High resolution
- Rotational-vibrational
- Cavity ring-down
Applications
- Nanoscale imaging
- Biomarker detection in breath
- Chemical and biological agent sensing
- IR sensor development
- Environmental monitoring
- Fence line monitoring
- Combustion diagnostics
- TIC, VOC, GHG, and explosives detection
- Process control
Product Specifications
Source: DRS Daylight Solutions Inc.
| . |
. |
. |
| Operation |
Continuous wave, mode-hop-free (CW-MHF) and extended CW tuning |
| Center Wavelength |
Availability < 4 to > 11 µm |