Quantum Cascade Laser (QCL) is a semiconductor laser that generates light via electronic transitions within the conduction band of a complex heterostructur. This design allows QCLs to be engineered to emit light in the mid and far-infrared ranges, which is useful for applications like molecular gas analysis and spectroscopy.

CNI can provide Distributed Feedback Lasers and Fabry–Perot Lasers.

 

DFB-QCL introduction Features:                                                              1. Wavelength range: 4.3-9.2 μm 2. Linewidth: ≤50 MHz 3. Tunable range: ±1 cm⁻¹     (current/temperature tuning) 4. Power: 5-20 mW Applications: 1. Environmental Monitoring (Greenhouse Gas Detection) 2. Industrial Safety (Toxic Gas Leak Detection) 3. Medical Diagnosis (Disease Marker Detection) e.g: 4.56μm DFB QCL wavelength changes with current/temperature FP-QCL introduction Features:                                                              1. Wavelength range: 3.6-10.5 μm 2. Linewidth: 200-500nm 3. Tunable range: Almost unadjustable 4. Power: 200-1500 mW Applications: 1. Chemical process monitoring 2. Mid-infrared absorption spectroscopy 3. Frequency comb spectroscopy 4. Materials characterization

e.g: 4.4μm FP QCL wavelength