Single Frequency PM Amplifiers

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Single Frequency Polarization Maintaining Fiber Amplifiers

[module] The Nufern NuAMP SF series of high power, polarization maintaining fiber amplifiers are specifically designed to operate in conjunction with ultra narrow linewidth, single frequency seed lasers based on distributed feedback (DFB) fiber lasers or solid state technologies. Capable of amplifying low power input signals with kHz linewidth to 2, 5, and 10 W of power, these monolithic amplifiers use large mode area fiber technology to overcome non-linearities such as stimulated Brillouin scattering (SBS) and maintain critical seed laser characteristics such as narrow linewidth and relative intensity noise (RIN). The NuAMP SF series includes input isolation (>30 dB) and input/output interlocks to prevent system failure and to protect the seed source (response time of < 10 µsec).

Spec sheet:
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Typical Applications
  • Sensing
  • LIDAR
  • Spectroscopy
  • Test and Measurement
Features & Benefits
  • Single mode, TEM00 beam with linearly polarized output — Coherent or spectral beam combining and harmonic frequency conversion to visible and UV
  • Optimized for single frequency seed lasers — Maintain linewidth, frequency stability, and RIN of the seed
  • Complete optical train including pump diodes — Highly flexible platform, ideal for OEM integration
  • Automatic shutdown of pump diodes, should seed laser fail — Protects system from failure

Optical Attributes

  • High signal isolation & amplification fidelity
  • High gain, low seed power requirement
  • SM linear polarization option
  • Very narrow linewidth (few kHz) available
  • Low RIN, high SNR, high PER
  • High beam quality, near diffraction limited
  • High open loop stability

Mechanical Attributes

  • Bottom surface heat rejection
  • Easy controls; Quick start
  • High immunity to shock and vibration

Electrical Attributes

  • Simple, fast & effective protection system
  • Single unregulated 24V power supply required
  • Low power consumption, high efficiency

Standard amplifier package

amplifier image

Specifications

Part #SFA-PMXXXX-2W-Z

Optical Specifications 1

Output Power2 W
Input Isolation (nominal)30 dB
Mode of OperationCW
Output Power Tunability10–100 %
Central Wavelength (10XX ± 2 nm)21064–1083 nm
PER at Rated Power (nominal)15 dB
Input Seed Power3> 50 mW
Input Signal Linewidth (nominal)10 kHz
Peak-to-Peak Power Stability (nominal)43 %
Beam QualitySingle Mode, TEM00

Mechanical Specifications

Input Fiber and ConnectorPM980-HP in FC/APC
Free Space Output Fiber TerminationPM 10/125 in FC/APC
Signal Tap at Output (nominal)0.01 % with FC/APC
Package Size5294 mm x 217 mm x 50 mm

Electrical Requirements

Drive Voltage/Current5 V/0.5 A (constant voltage) &
2 V/0–9 A (constant current)

Options

Center Wavelength (XXXX ± 2 nm)1064–1083 nm
Output Isolation (-Z)No Isolator (-0),
Fiber to Fiber Isolator (-1), or
Fiber to Free Space Isolator (-2)
(1) All specifications are at RT and proper heatsinking is required.
(2) Other wavelengths can be accommodated.
(3) Options with lower input signal power are possible.
(4) Stability is measured over a 2-hour period and calculated using (max-min)/Avg. Lower noise options are available.
(5) Custom OEM packaging available on request.
Part #SFA-PMXXXX-5W-Z

Optical Specifications 1

Output Power5 W
Input Isolation (nominal)30 dB
Mode of OperationCW
Output Power Tunability10–100 %
Central Wavelength (10XX ± 2 nm)21064–1083 nm
PER at Rated Power (nominal)15 dB
Input Seed Power3> 50 mW
Input Signal Linewidth (nominal)10 kHz
Peak-to-Peak Power Stability (nominal)43 %
Beam QualitySingle Mode, TEM00

Mechanical Specifications

Input Fiber and ConnectorPM980-HP in FC/APC
Free Space Output Fiber TerminationPM 10/125 in FC/APC
Signal Tap at Output (nominal)0.01 % with FC/APC
Package Size5294 mm x 217 mm x 50 mm

Electrical Requirements

Drive Voltage/Current5 V/0–9 A (constant voltage) &
7 V/0–9 A (constant current)

Options

Center Wavelength (XXXX ± 2 nm)1064–1083 nm
Output Isolation (-Z)No Isolator (-0),
Fiber to Fiber Isolator (-1), or
Fiber to Free Space Isolator (-2)
(1) All specifications are at RT and proper heatsinking is required.
(2) Other wavelengths can be accommodated.
(3) Options with lower input signal power are possible.
(4) Stability is measured over a 2-hour period and calculated using (max-min)/Avg. Lower noise options are available.
(5) Custom OEM packaging available on request.
Part #SFA-PMXXXX-10W-Z

Optical Specifications 1

Output Power10 W
Input Isolation (nominal)30 dB
Mode of OperationCW
Output Power Tunability10–100 %
Central Wavelength (10XX ± 2 nm)21064–1083 nm
PER at Rated Power (nominal)15 dB
Input Seed Power3> 50 mW
Input Signal Linewidth (nominal)10 kHz
Peak-to-Peak Power Stability (nominal)43 %
Beam QualitySingle Mode, TEM00

Mechanical Specifications

Input Fiber and ConnectorPM980-HP in FC/APC
Free Space Output Fiber TerminationPM 10/125 in FC/APC
Signal Tap at Output (nominal)0.01 % with FC/APC
Package Size5294 mm x 217 mm x 50 mm

Electrical Requirements

Drive Voltage/Current5 V/0–9 A (constant voltage) &
7 V/0–9 A (constant current)

Options

Center Wavelength (XXXX ± 2 nm)1064–1083 nm
Output Isolation (-Z)No Isolator (-0),
Fiber to Fiber Isolator (-1), or
Fiber to Free Space Isolator (-2)
(1) All specifications are at RT and proper heatsinking is required.
(2) Other wavelengths can be accommodated.
(3) Options with lower input signal power are possible.
(4) Stability is measured over a 2-hour period and calculated using (max-min)/Avg. Lower noise options are available.
(5) Custom OEM packaging available on request.

Naming conventions

Typical Output Stability of 10 W Single Frequency Linearly Polarized Amplifier Operating at < 2 kHz Linewidth

Stability graph