Operating wavelength 1695-1730nm, Output optical power 20W, Beam Quality M²<1.1; Bandwidth >±5nm
Based on Tm-doped fiber amplifier technique, LD-PD PTE.LTD. can provide amplifier that cover 1695-2150nm range, to maxium power of 50W，and keeping very low phase noise and intensity noise.
Features
● Ultra-Stable Output Power
● Excellent Beam Quality
● Seed Power-off Protection System
● Low Noise
Specification |
Part number | FA-SF-X-Y-CW(1) |
Wavelength range | 1695-1730nm | 1730-1850nm | 1850-1900nm | 1900-2050nm | 2050-2150nm |
Output Power | >1W/2W/5W | >2W/10W/20W | >2W/10W/20W/30W | >2W/15W/30W/50W | >2W/10W/20W |
Typical Wavelength | 1762nm， 2051nm |
Bandwidth | >±3nm | >±5nm | >±10nm | >±10nm | >±5nm |
Relative Intensity Noise | <0.08% (RMS, 10Hz-10MHz Integration) |
Power Stability | <0.75% @3hours, RMS |
Power Tuning Range | 10-100% |
Output Mode（2） | Single Mode PM fiber，FC/APC Connector（Output Power≤2W) OR Collimated Output（All Power） |
Beam Diameter | 0.8±0.2mm |
Beam Quality | TEM00，M²<1.1 |
Polarization | Linear, >23dB |
Seed Laser Input Power | ≥10mW(3) |
Seed Laser Input Isolation | >25dB |
Output Laser Isolation | >25dB |
Cooling | Air Cooling /Water Cooling |
Operating Environment & Power Supply |
Temperature | 15-30 ℃（Air Cooling） OR 15-35 ℃（Water Cooling） |
Power Supply | 100V-240V, AC, 50/60Hz |
Communication | RS422/RS485 |
Note:
(1)X is the center wavelength，Y is the output power, for 1762nm 2W amplifier, the partnumber is FA-SF-1762-2-CW.
(2) Beam size for collimated out，If PM fiber FC/APC connector output，there is no extra collimator
(3) Default input power should be 10-50mW, for higher or lower input power, please email us for customization Power Spectral Testing
Power Spectral Testing
pumping current（A） | Output power (W) @ 32 mW seed | PD2 feedback value | PD3 feedback value |
8 | 0.01 | 0 | 0 |
9 | 0.03 | 0 | 0 |
10 | 0.15 | 0 | 0 |
11 | 0.7 | 0 | 0 |
12 | 3.68 | 22-30 | 233 |
13 | 9.95 | 50-102 | 656 |
14 | 17.44 | 170-330 | 1230 |
15 | 25.4 | 350-540 | 1668 |
15.5 | 29.9 | 600-680 | 2040 |
15.6 | 30.8 | 700-960 | 2058 |
Table 1. Output power versus current curve
Power Stability Testing
The laser has an output power of 30 W, with an RMS power stability of 0.31% over a 2-hour period
Figure 2. 2-hour output power stability test
Polarization degree testing
The output laser is linearly polarized light with a polarization degree exceeding 19 dB.
Beam quality
The output beam quality measurement yields an M2 value of 1.04. The collimated output spot diameter is approximately 1.5 mm.
Figure 4. M2 Test
Line width testing
The seed line width is 111.6 kHz, and the amplified output line width measurement is 116.5 kHz.
Figure 6. Zoomed line width test (116.5 kHz)
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