CW-MHF™ Mid-IR Laser: Tune > 30 cm^-1 Without Mode Hops

The CW–MHF Mid-IR Laser is the ultimate tool for high-resolution, mid-IR spectroscopy. If you need high spectral resolution, phase-continuous tuning to avoid jumping over spectral lines, or both, the DRS Daylight CW-Mode-Hop-Free laser will meet your needs. Narrow-linewidth operation and MHF tuning is a high bar to reach in any laser system. Unique in the industry, the CW–MHF system provides open-loop linewidths of ≤ 5 MHz (over 100 ms) and MHF tuning to > 30 cm^-1, and often to > 100 cm^-1*. Drawing on years of precision engineering and manufacturing experience, the CW–MHF laser achieves this performance with a highly stable laser cavity that, guided by finite element analysis, was designed to reduce susceptibility to acoustic perturbation. The CW–MHF laser also includes two ways to modulate wavelength: via a PZT or current modulation. This exclusive combination of wide MHF tuning, narrow-linewidth operation, and modulation capability enables high-resolution spectroscopy and/or locking to a wavelength reference.

Features & Benefits:

• 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
• 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 protect your chips

Techniques & Applications

The unique feature set and industry-leading performance of the CW–MHF Mid-IR Laser enable a wide range of sensitive spectroscopy techniques and applications:

Spectroscopy techniques

• High resolution
• Rotational-vibrational
• Cavity ring-down
• Photoacoustic
• Gas phase

Applications

• Environmental monitoring
• Fence line monitoring
• Combustion diagnostics
• TIC, VOC, GHG, and explosives detection
• Process control
• Nanoscale imaging
• Biomarker detection in breath
• Chemical and biological agent sensing
• IR sensor development