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1 µm Single Frequency PM Amplifiers, Gen. II

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1.0 µm Single Frequency Polarization Maintaining Fiber Amplifier, Generation II

[module] The Nufern NuAMP PSFA 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 PSFA series includes input isolation (>30 dB at RT) and input/output interlocks to prevent system failure due to loss of signal and high back reflection, and to protect the seed source (response time of < 10 µsec).

These second generation amplifiers offer a number of improvements and new capabilities over the previous version. However, the first generation of these amplifiers are still available for purchase, if desired.

Spec sheet:
Download PDF data sheet

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Typical Applications
  • LIDAR & sensing
  • Spectroscopy
  • Test and measurement
  • Frequency conversion
  • Coherent or spectral beam combining
  • Atom cooling & trapping
Features & Benefits
  • Single mode, TEM00 beam with linearly polarized output — Useful for high-precision applications
  • Optimized for single frequency seed lasers — Maintain linewidth, frequency stability, and RIN of the seed
  • Complete optical train including pump diodes with integrated diode drivers — Highly flexible for OEM integration
  • Signal input, output power & back-reflection monitoring — Automatic system protection
  • Optional control box — Provides PC control via USB, E-stop, key switch, and remote interlock

Optical Attributes

  • High signal isolation & amplification fidelity
  • Very narrow linewidth (few kHz) available
  • Low RIN, high SNR, high PER
  • High beam quality, near diffraction limited
  • High open loop stability

Mechanical/Electrical Attributes

  • Easy controls; Quick start
  • High immunity to shock and vibration
  • Simple, fast & effective protection system
  • Low power consumption, high efficiency

Standard amplifier package

[amplifier photo]

Part #PSFA-1064-VV-XW-Y-Z

Optical Specifications ¹

Output Power2, 5, or 10 W
Input Isolation (nominal)30 dB
Mode of OperationCW
Output Power Tunability10–100 %
PolarizationLinear
PER at Rated Power (nominal)15 dB
Input Signal Linewidth (nominal)10 kHz
Peak-to-Peak Power Stability (nominal)23 %
Beam QualitySingle Mode, TEM00

Mechanical Specifications

Input Fiber and ConnectorFC/APC bulkhead
Package Size3275 mm x 215 mm x 38.5 mm
Output CableArmored Flex Cable

Electrical Requirements

Drive Voltage/Current For 2W unit: 24 VDC/1 A
For 5W unit: 24 VDC/2 A
For 10W unit: 24 VDC/3 A

Options

Central Wavelength41064–1083 nm
Input Power1–10 mW, 15–50 mW, or 50–200 mW
Output IsolationNo Isolator,
Fiber to Fiber Isolator, or
Fiber to Free Space Isolator
(1) All specifications are at RT and proper heatsinking is required.
(2) Stability is measured over 2-hour period and calculated using (max-min)/Avg. Lower noise options are available.
(3) Custom OEM packaging available on request.
(4) Additional wavelengths in 1040–1090 nm range available upon request.

Naming conventions

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

Stability graph