Posted in | Control Systems

Hedgehog™ Mid-IR Laser: Efficient and Fast Mid-IR Tuning

The newest tunable laser head from DRS Daylight, the Hedgehog Mid-IR Laser, is ideal for OEM or lab applications. Based on the well-proven External Cavity Quantum Cascade Laser technology, the Hedgehog laser is a unique device with TEM00 beam quality, high power, small size, high power, CW or pulsed output, and unmatched spectral repeatability.

Rapid acquisition of high-signal-number data is beneficial for molecular spectroscopy applications. Extensive mid-IR tuning is particularly useful for investigating many molecules or an absorption feature with a broad dynamic range.

The Hedgehog system benefits from low noise output, excellent spectral and spatial beam quality, and broad, quick tuning across the mid-IR spectrum. Its standard GUI, SDK, and sealed, alignment-free design make it easy to access this performance.

Select from the Hedgehog (tunes up to 200 cm-1), Hedgehog-UT (tunes up to 400 cm-1), and Hedgehog-LT (tunes up to 30 cm-1) basic versions.


Features and Benefits

  • Tune up to 400 cm-1 at speeds up to 5000 cm-1/s
  • CW or pulsed output (up to 3 MHz/30% duty)
  • Wavelength availability: 3-13 µm
  • Proprietary HFQD™ circuitry protects the chips
  • Ultra-quiet CW: RIN as low as -140 dBc/Hz enables higher-SNR spectroscopy
  • Superior wavelength repeatability for higher-accuracy spectroscopy
  • Superb TEM00 beam quality and low beam pointing allows fiber coupling
  • High output power for high SNR of >1 W (peak) and >0.5 W (average)
  • SideKick controller, GUI, and SDK standard with all systems 


  • Standoff detection
  • Nanoscale imaging and spectroscopy
  • Protein analysis
  • Process control
  • Photoacoustic spectroscopy
  • Atmospheric research
  • Combustion diagnostics
  • TIC, VOC, GHG chemical and biological agent detection
  • Biomedical diagnostics
  • Imaging

Product Specifications

Source: Daylight Solutions Inc.

. .
Center Wavelength Availability < 4 μm > 13 μm
Modes of Operation  Pulsed or CW2
Tuning Modes Set λ, Step & Measure, Continuous Scans
Max. Tuning Speed (Step)  250 ms step-and-settle time to arbitrary λ
Max. Tuning Speed (Scan) Slew rates to > 5,000 cm-1/s
Wavelength Accuracy  ≤ 1 cm-1
Wavelength Repeatability  To ≤ 0.1 cm-1 [5]
Average Power Stability < 2% (1 hr)
Spatial Mode TEM00 (nominal)
Beam Divergence < 4 mrad (full angle, 1/e2 intensity width)
Beam Pointing Stability < 1 mrad (beam centroid change)
Spot Size   < 2.5 mm (1/e2 intensity radius)
Polarization Linear, vertical, > 100:1

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