CW-MHF Mid-IR Laser: High-Performance Mid-IR Spectroscopy

The CW-MHF Mid-IR laser is the ultimate instrument for high-resolution mid-IR spectroscopy. The DRS Daylight CW-Mode-Hop-Free laser is suitable for users requiring phase-continuous tuning to prevent spectral line hopping, high spectral resolution, or both.

The goal for any laser system is to achieve MHF tuning and narrow-linewidth operation. With open-loop line widths of ≤ 5 MHz (over 100 ms) and MHF tuning to > 30 cm^–1, and frequently to > 100 cm^–1, the CW-MHF system is unique in the industry.

The CW-MHF laser achieves this performance using a very stable laser cavity, led by finite element analysis, intended to reduce sensitivity to acoustic perturbation. This design draws on years of expertise in precision engineering and manufacturing. TheCW-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 protect 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 & Applications

The CW-MHF Mid-IR Laser’s unique feature set and industry-leading performance allow for a wide range of sensitive spectroscopy techniques and applications.

Spectroscopy Techniques

Photoacoustic

Gas phase

High resolution

Rotational-vibrational

Cavity ring-down

Applications

Process control

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

Product Specifications

Source: DRS Daylight Solutions Inc.