Measurement
MDL-XN-3900: Measurement benefits from a stable, focusable source. 3900 nm emission fixes the compatible coatings and detector response, while the listed beam characteristic (Near TEM00) informs waist size and propagation.
Power stability, linewidth, beam quality
MDL-XN-39003900 nm infrared CW laser
3900 nmMDL-XN-3900 is a 3900 nm CW laser. Used for measurement, communication, spectrum analysis. CW Mid-Infrared Laser. Key specifications: operating mode CW, output / average power 1~300 mW, power stability (rms, 4 hours ± 3°c) <3%, <2%, <1%. View specifications, datasheet and enquiry options from Precisometer.
Specifications
MDL-XN-3900
16 specification rows
| Operating mode | CW |
|---|---|
| Output / average power | 1~300 mW |
| Beam / notes | CW Mid-Infrared Laser |
| Power stability (rms, 4 hours ± 3°C) | <3%, <2%, <1% |
| Transverse mode | Near TEM00 |
| Beam divergence, full angle (mrad) | <5.0 |
| Warm-up time (minutes) | <10 |
| Cooled method | Air cooled |
| Operating temperature (℃) | 10-35 |
| Power supply (100-240VAC) | PSU-H-LED |
| Expected lifetime (hours) | >10000 |
| Central wavelength (μm) | 3.9±0.3 |
| Output power (mW) | 1-300 |
| Beam diameter at the aperture (mm) | <3.0 |
| Beam height from base plate (mm) | 68.4 |
| Modulation option | DC-1kHz; TTL and Analog optional |
Application context
Why this design is used
Applications named on this model’s datasheet, expanded with the model’s optical specifications.
Communication
MDL-XN-3900: 3900 nm emission must sit inside the fiber-component passband used for Communication; connector polish, fiber mode, linewidth and back-reflection tolerance should be specified as one optical interface.
Spectrum analysis
MDL-XN-3900: 3900 nm emission sets the excitation and detector-band choice for Spectrum analysis; linewidth and wavelength stability determine how cleanly weak spectral features can be separated from the laser line. The listed beam characteristic (Near TEM00) also controls focusing and collection geometry.
System integration
Integration and compatibility
Use these checks to connect MDL-XN-3900 to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Thermal management
- Cooled method: Air cooled · Operating temperature (℃): 10-35
- Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
- Beam parameters at the output
- Transverse mode: Near TEM00 · Beam divergence, full angle (mrad): <5.0
- Size the downstream optics from the stated beam diameter and divergence rather than from the aperture of the housing, and confirm the polarisation state before specifying isolators or polarising optics.
Technical FAQ
Integration questions for MDL-XN-3900
What cooling does the MDL-XN-3900 require?
Cooled method: Air cooled · Operating temperature (℃): 10-35. Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
What beam does the MDL-XN-3900 deliver?
Transverse mode: Near TEM00 · Beam divergence, full angle (mrad): <5.0. Size the downstream optics from the stated beam diameter and divergence rather than from the aperture of the housing, and confirm the polarisation state before specifying isolators or polarising optics.
Need this configured?
Share wavelength, operating mode, output power or pulse energy, linewidth or pulse width, delivery, control, and safety requirements and we will qualify the matching configuration and lead time.
Model selection
Nearby series comparison
Compare MDL-XN-3900 with the closest available models in the CW Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | MDL-XN-3900 (current) | MIL-V-3900 | MIL-W-3900 |
|---|---|---|---|
| Wavelength | 3900 nm | 3900 nm | 3900 nm |
| Optical power / pulse energy | 1~300 mW | 1~200 mW | 50~800 mW |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | Near TEM00 | <5 | <11 |
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Compare the MDL-XN-3900 with nearby cw lasers across the wavelength range.
