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Power stability, linewidth, beam quality

MIL-W-19401940 nm infrared CW laser

1940 nm

MIL-W-1940 is a 1940 nm CW laser. Used for ho:yag laser pumping, medical, scientific research. Water cooled. Key specifications: output / average power 1~11 W, wavelength (nm) 1940±2, operating mode CW. View specifications, datasheet and enquiry options from Precisometer.

Specifications

MIL-W-1940

16 specification rows

Output / average power1~11 W
Beam / notesWater cooled
Wavelength (nm)1940±2
Operating modeCW
Output power (W)1-11
Power stability (rms, 4 hours±3℃)<5%, <3%
Transverse modeNear TEM00
Beam divergence, full angle (mrad)<8
Beam diameter at the aperture (1/e2,mm)<5
Polarization ratio>100:1 Vertical
Beam height from base plate (mm)98
Warm-up time (minutes)<10
Cooled methodAir Cooled
Operating temperature (℃)15-35
Power supply (100-240VAC)PSU-W-LED or PUS-W-FDA
Expected lifetime (hours)>10000

Application context

Why this design is used

Applications named on this model’s datasheet, expanded with the model’s optical specifications.

Ho:YAG laser pumping

MIL-W-1940: 1940 nm emission determines compatible optics, coatings and detectors for Ho:YAG laser pumping. The catalogued beam parameter (Near TEM00) helps predict how the source will focus and propagate through the instrument.

Medical

MIL-W-1940: 1940 nm emission determines compatible optics, coatings and detectors for Medical. The catalogued beam parameter (Near TEM00) helps predict how the source will focus and propagate through the instrument.

Scientific research

MIL-W-1940: 1940 nm emission determines compatible optics, coatings and detectors for Scientific research. The catalogued beam parameter (Near TEM00) helps predict how the source will focus and propagate through the instrument.

System integration

Integration and compatibility

Use these checks to connect MIL-W-1940 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 (℃): 15-35
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): <8
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 MIL-W-1940

What cooling does the MIL-W-1940 require?

Cooled method: Air Cooled · Operating temperature (℃): 15-35. 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 MIL-W-1940 deliver?

Transverse mode: Near TEM00 · Beam divergence, full angle (mrad): <8. 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.

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Model selection

Nearby series comparison

Compare MIL-W-1940 with the closest available models in the CW Lasers family. Confirm option-dependent values on the final configuration before ordering.

Selection parameterMIL-W-1940 (current)MIL-N-1940MDL-H-1940
Wavelength1940 nm1940 nm1940 nm
Optical power / pulse energy1~11 W1~2000 mW1~600 mW
Operating mode / pulse widthCWCWCW
Beam qualityNear TEM00Near TEM00Multimode