nLIGHT | High-Power Semiconductor Lasers and Fibers - LIEKKI™ Pump and Signal Combiners

High-Power Semiconductor Lasers

LIEKKI™ PUMP AND SIGNAL COMBINERS

LIEKKI™ (6+1)x1 pump and signal combiners are used to combine the power from six multimode laser pump diodes and couple it with a signal feed. The combined power can be used for high-power fiber amplifier and laser applications in industrial, military, medical and communications. The devices offer efficient power transfer with a maximum conservation of brightness.

LIEKKI™ combiners are available in a variety of pump and signal fiber geometries. Their fiber design provides reliable delivery of high-power levels. LIEKKI™combiners are optically matched with LIEKKI™ ytterbium fibers.

		Combiner- 6/125DC	Combiner- 10/125DC	Combiner- 20/125DC	Combiner- 20/400DC
Pump input mechanical
Pigtail length	m	> 0.5	> 0.5	> 0.5	> 0.5
Core size	µm	105	105	105	200
Cladding size	µm	125	125	125	220
Core NA		0.15¹	0.15¹	0.15¹	0.22
Signal input mechanical
Core size	µm	5.5 ± 0.5	10 ± 1	20 ± 2	20 ± 2
Core NA		0.15 ± 0.01	0.07 ± 0.01	0.07 ± 0.01	0.07 ± 0.01
Cladding size	µm	125 ± 2	125 ± 2	125 ± 2	400 ± 8
Combined output mechanical
Core size	µm	5.5 ± 0.5	10 ± 1	20 ± 2	20 ± 2
Core NA		0.15 ± 0.01	0.07 ± 0.01	0.07 ± 0.01	0.07 ± 0.01
Cladding size	µm	125 ± 2	125 ± 2	125 ± 2	400 ± 8
Cladding NA		0.46	0.46	0.46	0.46
Pigtail length	m	> 0.5	> 0.5	> 0.5	> 0.5
Optical
Signal wavelength range	nm	1000 - 1100	1000 - 1100	1000 - 1100	1000 - 1100
Pump wavelength range	nm	900 - 1000	900 - 1000	900 - 1000	900 - 1000
Pump transmission	%	> 90	> 90	> 90	> 90
Max input power per input fiber	W	8	8	8	100
Signal transmission	%	> 80	> 80	> 80	> 80
Return loss	dB	> 40	> 40	> 40	> 40
Directivity	dB	> 40	> 40	> 40	> 40
Other
Operating temperature	°C	+0 to +30	+0 to +30	+0 to +30	+0 to +30
Storage temperature	°C	-5 to +70	-5 to +70	-5 to +70	-5 to +70
Package dimensions	mm	50 x 5 x 5	50 x 5 x 5	50 x 5 x 5	60 x 12 x 6.5

¹	0.22 available with > 80% pump transmission.

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