Large mode area Yb-doped DC PM tapered fiber pump combiner (prototype) YDF-DC-40/400-PM-TPR-PC
YDF-DC-40/400-PM-TPR-PC is easy-to-use intergrated unit which consist of YDF-DC-40/400-PM-TPR tapered fiber and monolithic system for injecting pump in the tapered fiber and couple amplified signal out. This unit allows amplification with a very high gain (in excess of 30 dB) to ultimately high peak power (sub-MW) and high average power (tens of Watts). There are collimated free space output for amplified signal and two fiber ports for splicing pump and signal sources. The unit has low-cost maintenance-free monolithic design.
NOTE: wavelength stabilized at 976±1 nm pump diode with NA=0.15 and signal at 1064±10 nm must be used to get the best performance (see detailes in [Opt. Express 25, 26958 (2017)]). It is necessary to ensure sufficient heat sink for the Yb-doped tapered fiber.
Measurement of beam quality factor M2
Pump-to-signal conversion efficiency
PUMP COMBINER SPECIFICATIONS
|Yb-doped DC PM tapered fiber length,m||1.5 ÷ 3|
|Signal input port||PM 10/125-DCF fiber|
|Pump input port||MM-105/125-0.22NA fiber|
|Pump to signal conversion efficiency (slope), %
|Pump power handling, W||< 20|
|Input signal, mW||> 10|
|Polarization extinction ratio, dB||> 10 (14-18 typical)|
|Output beam quality M2||< 1.2 (1.05-1.1 typical)|
Other parameters (i.e. output power in excess of 50 W) are available on the request