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Tunable Laser - Pulsed

The Tunable Pulsed External Cavity Quantum Cascade Laser (ECqcL™) system provides the user with over 100 cm-1 of tunability in less than a second. This translates to tunability of 5% to 10% of the center wavelength. The platform offers adjustable pulse widths anywhere from 40 nsec to 500 nsec and pulse repetition frequencies (PRF) from 50 Hz to 100 kHz. The system operates at room temperature, requiring no external cooling.


  • Center Wavelength Availability: <4 to >11 microns – please inquire
  • Tuning range: 100 cm-1 Typical, 75 cm-1 Guaranteed
  • Peak power: >250 mW Typical
  • Average power maximum: >5 mW Typical (@5% duty cycle)
  • Linewidth: <1 cm-1 FWHM
  • Controller: includes TEC and laser driver
  • Room temperature operation


  • Center wavelengths covering most of the mid-IR
  • Broad tuning range – see more molecules per laser
  • Integrated system for easy use – manual & computer control
  • Highly collimated beam for more usable photons
  • Park on a single wavelength or scan continuously
  • No chiller required

Product Details

Daylight’s Pulsed lasers span the mid-IR spectrum from 4 μm to 12 μm, and provide tuning ranges of up to 100 cm-1 (± 5% for a 10-μm center wavelength). All lasers offer superb wavelength accuracy and stability throughout their tuning range. With our commitment to ongoing gain chip development, new expanded tuning ranges and higher output powers are added to our list of available models on an ongoing basis. So even if you don’t see what you need on our website, please contact us to tell us what you need.

Designed by the world’s leading experts in tunable lasers, these sources are small, robust, and utilize specially designed miniature collimating lenses to provide high-beam-quality output. Each laser system integrates TEC technology for behind-the-scenes temperature control, so no cryogenic cooling is required.

Each Pulsed laser system includes an intuitive, easy-to-use multifunction SideKick™ laser controller featuring GUI and SDK-based user interfaces via USB or Ethernet, and our field-proven High-Fidelity Quantum Cascade Drive (HFQD™) gain chip protection circuity.

With a great blend of wide wavelength choice, wide tuning range, high-quality light output, our Pulsed lasers enable research in multiple fields of molecular detection and imaging. Applications include: industrial process control, the detection of biomarkers in the breath, cellular imaging, and the detection of chemical and biological agents.

Daylight Solutions' mid-IR laser platform technology opens up the mid-IR to all researchers—today. Please see our web site for information on other mid-IR laser systems, including tunable CW/Pulsed and CW Mode-Hop-Free lasers.

Call today for pricing and availability of specific wavelengths.


Product Specifications
Room Temperature— No Chiller Required
Operation Pulsed Only
Center Wavelengths Availability <4 to >11 microns - please inquire.
Optical Parameters
Tuning Range 100cm-1 Typical, 75 cm-1 Guaranteed
Peak Power >250 mW Typical
Minimum Avg. Power 1 mW
Maximum Avg. Power >5 mW Typical (@ 5% duty cycle)
Power Variation <5% pulse to pulse, <2% avg. over 1 hr.
Linewidth <1 cm-1 FWHM
Beam Divergence <5 mrad
Beam Waist 30–50 cm Typical (from exit port*)
Polarization Linear 100:1, Vertical Direction
Pointing Stability <1 mrad up to 100 cm-1 tuning
Spot Size Minimum <2.5 1/e Electric Field Dia.
Beam Quality TEM00
Electrical Parameters
Pulse Width 40 to 500 nsec (20 ns increments)
Pulse Repetition Frequency 0.1 to 100 kHz (0.1 kHz increments)
Duty Cycle Up to 5%
Triggering Internal and External Pulse, External Trigger
Scanning Unidirectional and bidirectional survey scan, Start, Stop, Step, Pause scanning programmable
External Interface USB 2.0, Ethernet 10/100
Mechanical Parameters
Full Range Tuning Speed <1 sec for 100 cm-1 scan
Display Accuracy ±1.0 cm-1 unidirectional
Display Repeatability <0.02 cm-1 unidirectional
QCL Operational Temp 15°C Typical
Relative Temp ±5°C Programmable
Package Size 5.5" L × 3.45" W × 3.31" H

† Ambient temperature 20°C, 10% to 90% humidity
‡ Wavelengths in development

Industries & Applications

  • Photoacoustic spectroscopy (PAS)
  • Hyperspectral imaging

  • Explosives Detection
  • Chemical warfare agent detection
  • Infrared countermeasures (IRCM)
  • Illumination
  • Photoacoustic spectroscopy
  • Standoff detection research
  • Hyperspectral imaging
  • Remote sensing
Life Sciences
  • Biomedical imaging
  • Breath analysis
  • Glucose monitoring

  • Atmospheric research
  • Pollution monitoring
  • Toxic industrial chemicals detection
  • Greenhouse gas monitoring (GHG)
  • Process control
  • Fence line monitoring
  • Toxic industrial chemicals detection
  • Gas leak detection
  • Combustion diagnostics