The Tunable CW/Pulsed External Cavity Quantum Cascade Lasr (ECqcL™) system is the laboratory work horse, providing the same broad tunability as the Tunable Pulsed system. However, in addition to Pulsed mode, the system also offers Continuous Wave (CW) operation
Features
- Wavelengths offered: 4.2, 4.4, 4.5, 4.6, 4.9, 5.3, 6.1, 7.4, 7.8, 8.1, 8.8, 9.5, 10.5 µm
- Modes: Laser may operate in either CW or Pulsed mode
- Tuning range: 100 cm-1 Typical, >70 cm-1 Guaranteed
- CW output power: >70 mW Typical
- CW linewidth: <100 MHz
- Controller: includes TEC and laser driver
- Room temperature operation (water chiller required for CW operation)
Benefits
- 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 cryogenic cooling (water chiller required for CW mode)
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Product Specifications
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Room Temperature — No Cryogenic Cooling
(Water Chiller required for CW operation)
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Operation
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CW and Pulsed
(for Pulsed operating parameters see Tunable Pulsed Laser Datasheet)
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Center Wavelengths (units in μm)
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4.2, 4.4, 4.5, 4.6, 4.9, 5.3, 6.1, 7.4, 7.8, 8.1, 8.8, 9.5, 10.5
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Optical Parame
ers
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Tuning Range
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>70 cm-1 Guaranteed, 100 cm-1 Typical
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Peak Power
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Refer to Tunable Pulsed Laser Datasheet
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Minimum Avg. Power
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1 mW
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Maximum Avg. Power
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>70 mW Typical
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Power Variations
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<5% short term, <1 minute, <5% avg. over 1 hr.
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Linewidth
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<100 MHz FWHM
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Beam Divergence
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<5 mrad
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Beam Waist
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30–50 cm Typical (from exit port)
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Polarization
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Linear 100:1, Vertical Direction
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Pointing Stability
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<1 mrad up to 100 cm-1 tuning
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Spot Size Minimum
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<2.5 mm 1/e Electric Field Dia.
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Beam Quality
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TEM00
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Electrical Parameters
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Pulsed
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Refer to Pulsed Laser Datasheet
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CW
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True Continuous Wave operation
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Scanning
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Unidirectional and bidirectional survey scan, Start, Stop, Step, Pause scanning programmable
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External Interface
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RS-232, GPIB supported, USB supported in 2010
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Wavelength Modulation
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Optional QCL Current Modulation up to 0.05 cm-1 at 0.01 to 2 MHz
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Mechanical Parameters
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Full Range Tuning Speed
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<1 sec for 100 cm-1 scan
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Display Accuracy
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±1.5 cm-1 unidirectional
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Display Repeatability
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<0.02 cm-1 unidirectional
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QCL Operational Temp
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15°C Typical
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Relative Temp
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±5°C Programmable
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Package Size
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5.5" L × 3.45" W × 3.31" H
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