4.53um 20mW DFB-CW QCL Continuous Wave Quantum Cascade Laser

4.53um 20mW DFB-CW QCL Continuous Wave Quantum Cascade Laser

QCL is a semiconductor laser that emits in the mid-infrared region (4 um to 10 um). Due to its emission mechanism being completely different from conventional laser diodes, QCLs have attracted significant attention as an innovative solution for mid-infrared applications such as trace gas analysis in environmental monitoring.The quantum cascade laser utilizes SPC (Single Phonon Continuum) depopulation and a DFB (Distributed Feedback) structure, emitting continuous-wave mid-infrared laser radiation at room temperature.The operating temperature of the chip is controlled by a Peltier element housed in an HHL package, allowing mode-hop-free tuning of the emission wavelength while maintaining longitudinal single-mode operation.

Product features：Continuous wave output; DFB single-mode characteristics; precise temperature control; low-noise driving; industrial-grade package

Part Number：MP-QCL-4530-DFB-20

Application area：Gas Sensing | Medical Diagnostics | Defense and Security | Environmental Monitoring | Semiconductor Metrology

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Main parameters
General Parameters
Optional Configurations
Downloads

Main parameters

Core parameters

Central Wavelength Output Power

4.53um 20 mW

Dimension Drawing

General Parameters

Model Parameters

Parameter	Symbol	Condition	Min.	Typ.	Max.	Unit
Operating Temperature (QCL) *2	Top(qcl)	K *1 = 2209 cm⁻¹	+10	—	+50	°C
Spectral Linewidth *3	ΔκL	K *1 = 2209 cm⁻¹	—	—	0.2 *4	cm⁻¹
Wavenumber Tuning Range *5	ΔκT	K *1 = 2209 cm⁻¹	±1.0	—	—	cm⁻¹
Radiant Power	Fe	K *1 = 2209 cm⁻¹	20	—	—	mW
Laser Threshold Current	Ith	Top(qcl) = +20 °C	—	—	1.0	A
Minimum Side Mode Suppression Ratio	SMSR	Top(qcl) = +20 °C	25 *4	—	—	dB

Notes

*1 K: Emission wavenumber (cm⁻¹).

*2 The device can emit the target wavenumber at a specific Top(qcl) within the indicated temperature range.

*3 FWHM.

*4 These values are limited by instrument resolution and signal-to-noise ratio during measurement.

*5 Continuous wavenumber scan range; the center of the tuning range is the emission wavenumber (K).

Typical Characteristics

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General Parameters

Thermistor Configuration (Schematic Diagram)

Typical Transmittance Curve of the Window

DFB-CW QCL Continuous Wave Quantum Cascade Laser Model List

HHL Package

Wavelength	Wavenumber	Target gases
4.33 μm	2310 cm⁻¹	CO₂, CO₂ isotope
4.53 μm	2209 cm⁻¹	N₂O
4.57 μm	2190 cm⁻¹	N₂O, CO
5.26 μm	1900 cm⁻¹	NO
6.13 μm	1631 cm⁻¹	NO₂
7.18 μm	1392 cm⁻¹	SO₃
7.39 μm	1354 cm⁻¹	SO₂
7.73 μm	1294 cm⁻¹	CH₄

Optional Configurations

Downloads

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Product title: 4.53um 20mW DFB-CW QCL Continuous Wave Quantum Cascade Laser

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