Fixed Wavelength Laser for Mid-IR

Daylight Solutions™ is pleased to present the next generation Unicorn™ II fixed-wavelength lasers.

Daylight Solutions™ has reinvented the fixed-wavelength laser with a series of innovations that mean better performance from the new Unicorn II laser. A more robust and stable resonator structure provides better linewidth and wavelength stability as environmental conditions vary The new HFQD control electronics (High-Fidelity QCL Drive) allow for increased repetition rates and longer pulses while providing more protec­tion for the gain chip. HFQD also includes an improved modulation circuit offering wider bandwidth of modulation frequencies from DC to 5 MHz. More stability, more control, more robust - the new Unicorn II.

The Unicorn II platform has been designed and now redesigned for flexibility and performance. The available wavelengths span the mid-lR spectrum from 3.5 µm to 1 0.4 µm and the wavelength is factory set to an accuracy of ±30 GHz (± 1 cm-1). Most systems can run in both pulsed and cw modes putting modulation schemes and maximum power at your fingertips. Powers up to 500 mW with a single QC chip is available.

Brought to you by the world's leading experts in tunable mid-infrared lasers, these sources are small and stable benchtop instruments. Simple and effective thermal management means that in pulsed mode, no external cooling is required and only with cw operation does the Unicorn II require water cooling. No cryogenic cooling ever.

The design is based on our award-winning CW-Pulsed tunable laser platform. Daylight Solutions™ is the leader in ECqcL™ (External Cavity Quantum Cascade Laser) Technology. We have used our design experience to offer you the most reliable, most flexible fixed­wavelength system to date. A current modulation input circuit offers fast control over the output amplitude and even 0.1 cm-1 of frequency modulation. Laser control is through the easy-to-use front panel display of the controller. Remote communication with the controller is also available with a PC through USB or Ethernet

  • Fixed-wavelength
  • High-power
  • Pulsed and/or cw operation
  • Accurate wavelength set
  • Low wavelength drift
  • Expanded repetition rate, pulse width, and duty cycles Expanded modulation functionality
  • Excellent pointing stability
  • No cryogenic cooling

Unicorn II

Specifications: Unicorn II
Overall Performance
Operation ModePulsed and CW[1]
Peak Wavelengths [2]3.5, 3.8, 4.0, 4.2, 4.4, 4.5, 4.6, 4.9, 5.3, 6.1, 6.2, 7.4, 7.8, 8.1, 8.8, 9.5, 10.4 µm
Wavelength Set-Point Accuracy± 1 cm-1
Beam Divergence<5 mrad
Beam Pointing Stability<50 µrad
PolarisationLinear, Vertical, 100: 1
Beam Spatial ModeTEM00
Beam M2≤ 1.3
Spot Size<2.5 mm (1/e point)
Beam Waist30-50 cm from exit port
CW Performance
PowerDepends on wavelength, typically> 100 mW
CW Linewidth[3]≤ 100 MHz
Wavelength Drift≤ 0.5 cm-1/8 hr within operating temperature range
Current Modulations Bandwidth [4]DC to 2 MHz
Current Modulation Amplitude Depth>50%
Current Modulation Frequency Depth-0.05 cm -1
Pulsed Performance
Pulsed Linewidth≤ 1 cm-1
Peak PowerDepends on wavelength, typically > 100 mW
Minimum Average PowerDepends on wavelength, typically >5 mW
Pulsewidths [5],[6]40-500 ns
Power Variation (pulse-to-pulse)[1]≤2% rms
Repetition Rate[5],[8]0.1-100 kHz
Maximum Duty Cycle[5]5%
Control Specifications
Control Interface[9]Side Kick™ controller
Triggering CapabilitiesInternal or external trigger, external pulse input
External Control InterfacesUSB 2.0, or Ethernet 10/100
Operating Specifications
Operating Temperature Range15-35 °C
Operating Humidity10-90% RH, non-condensing
Cooling (pulsed) [10]Passive air
Cooling (cw) [10],[11]Water
Power Requirements100-240 VAC, 50-60 Hz, lφ
Mechanical Specifications
Head Dimensions5.50 x 3.45 x 3.31 inches, L x W x H
Controller Dimensions7.3 x 5.2 x 1.4 inches, L x W x H
Pricing: Contact Laser 2000
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All specifications subject to change without notice.

[1] Some wavelengths only available in pulsed operation.
[2] Peak of the gain curve for available QC gain chips.
Essentially all wavelengths from 3.5-10.4 µm are available.
[3] Averaged over 1 sec.
[4] Current modulation is only compatible with cw operation.
[5] Measured over 1 hour interval.
[6] Some gain chips can support longer or shorter pulsewidths, higher repetition rates, and/or duty cycles. Contact Laser 2000 for your specific needs.
[7] 20 ns increments.
[8] 0.1 kHz increments.
[9] The fixed-wavelength laser heads are only compatible with HFQD-enabled controllers
[10] No cryogenic cooling required
[11] ~50 W capacity water cooling

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