RLM Series

Raman Fiber Laser Modules

IPG Photonics’ RLM Series Raman Fiber Lasers were developed specifically to meet the rapidly growing demand in universal sources that could provide any wavelength in 1100-1700 nm range with output power up to 30 W CW. These pumps are ideal for applications requiring a compact, high power, single-mode source such as telecom, medical and industrial to a variety of laboratory test and measurement and scientific applications. Raman Fiber Lasers offer a superior pump source over other techniques such as frequency multiplexed single-mode laser diode combiners by virtue of their cost, efficiency and ease of achieving high power. Linear polarization and higher output power, up to 30 watts, are available on request.



1100-1700 nm Wavelength Choices Rugged Compact Module Packaging
Up to 10 W Output Optical Power Single-mode Fiber Output
Telecom Grade Reliability
Mode of Operation CW   
Polarization Random   
Nominal Output Power, W 1 5 10
Output Power Tunability, % 10-100
Output Power Instability: Long Term
(over 8 hours), %
1 1 2

Emission Bandwidth, nm
3 dB (FWHM)
10 dB


Central Emission Wavelength, nm 1455 

Suppression Ratio, dB 1050-1440


In Band Power, % 97  97 95 
Operating Voltage (DC) 12 24 48
Max. Power Consumption (at 20°C), W <20 <80 <24 
                      1Linear Polarization is available on request
                      2Desired wavelength to be specified in place of XXXX from the range 1100-1700 nm


Dimensions, mm 220 x 160 x 35
Ambient Operational Temperature Range, °C

Standard: 0 to +55
Extended: -20 to +65


RLM Series Datasheet


Remote Fiber Amplifier Pumping Repeaterless Submarine/ Long Span Systems
Distributed Raman Amplification Ultra-broadband Amplifiers

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