1-20 W30 W

ELR-SF, 1-30 W

Erbium Single-frequency CW Lasers

IPG ELR Erbium continuous wave (CW) lasers are exciting products that do not have any analogs on the market. First manufactured in 1994 for airborne applications, Erbium CW fiber lasers have since been deployed in a vast variety of telecom, R&D, industrial and medical applications.

ELR-SF Series are single frequency (linewidth <50 kHz) fiber lasers with powers up to 30 W. These randomly polarized lasers provide diffraction limited output in “eye-safe”* (1535-1605 nm) spectral range with all solid-state laser reliability.  Their turnkey operation, compact size, and air-cooled simplicity make them an ideal infrared source for both commercial OEM and scientific applications.



Selectable Wavelength 1.5 - 1.6 μm Compact and Low Cost 
Excellent Beam Quality Industrial Performance
Random Polarization Telecom Reliability
Single Frequency Air-cooled
Central Wavelength Range*, nm 1535 - 1605 1545 - 1565
Central Wavelength Accuracy, nm ±1
Linewidth FWHM, kHz <50 
Mode of Operation CW
Maximum Average Power**, W 1 5 10 20 30
Power Tunability, % 10 - 100 1 - 100 5 - 100
Power Stability***, % 1 2
Relative Intensity Noise****, dB/Hz -140
Polarization Random
Beam Quality, M2 typical <1.10, max <1.15

* Custom central wavelengths are available upon request in the specified range.

**Other power leveles are available. Please contact your IPG Representative.

*** Typical, over 8 hours

 **** > 10 kHz


Pump current modulation, < 2 kHz

Red aiming laser (0.5 mW) for units < 2 W

“Eye-Safe” operation generally means that eye damage threshold is many orders of magnitude higher than for 1 μm lasers. Nevertheless, it is a Class IV laser product. IPG Photonics recommends that appropriate eyewear is worn and laser safety procedures are followed.

Console Dimensions (W × D × H), mm 1-20 W448 × 403 × 132 30 W448 × 504 × 177
Cooling Air
Supply Voltage, VAC single-phase 50-60 Hz, 100 - 240
Power Consumption, W < 40 < 80 < 125 < 195 < 235

ELM-SF OEM modules are available upon request.


High Resolution CW Spectroscopy Scientific Applications
Remote Sensing Telecom Applications
Holography & Interferometry Biomedical Applications
Optical Pumping
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