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FIBER LASER: 1550nm; up to 150 MicroJoules Per Pulse
- Nanosecond Pulse Width
- LiDAR Application Fiber Laser

  • Seed Laser Module and Power amplifier Module
  • 150 MicroJoule 1550nm Nanosecond Pulsing LiDAR Fiber Laser High energy Pulses
  • High Power 150 MicroJoule 1550nm Nanosecond Pulsing LiDAR Fiber Laser

Request Quote   Ships: 4 weeks | Model AMN-LiDAR-05

Key Features
  • Designed for Wind Detection, 3 Dimensional Imaging and Ranging LiDAR Systems
  • Pulse Energy up to 150 μJ @ 200 Nanosecond Pulse Width, Linear Polarized Nanosecond Pulsed all Fiber Laser Source with Master-Oscillator Power Amplifier
  • Integrated AOM
  • Pulse Widths from 100 to 1,500 nanoseconds
  • Pulse Repetition Rate from 10 to 20 kHz
  • Ultra-Narrow Linewidth as Narrow as 1.6 kHz

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MODEL AMN-LiDAR-05
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Specifications
  • Mode of Operation: Nanosecond Pulsing
  • Peak Power @ 200ns Pulse Width: 700 Watts
  • Peak Energy @ 200ns Pulse Width: 150 μJ
  • User Set Pulse Width: 100 to 1500 nanoseconds
  • Repetition Rate: 10 - 20 kHz
  • Beam Quality M^2 (max): 1.4
  • Wavelength: 1550.12 ± 0.2
  • Linewidth (typ): 15 kHz
  • Side Mode Suppression Ratio @ 200ns Pulse Width (typ): 50 dB
  • Output Isolator: 30 dB
  • AOM Extinction Ratio (typ): 100 dB
  • AOM Frequency Shift (+/-0.1%): 80 MHz
  • AOM Rise-time / Fall-time (typ, 10~90%): 70 Nanoseconds
  • Polarization Extinction Ratio (typ): 23 dB
APPLICATIONS
  • Wind Speed Measurements
  • Range Finders
  • Pollution Monitoring
  • 3D Imaging
user INTERFACE
  • Remote: RS232, LabVIEWcontrol software included
  • Amplifer Output Fiber: 30cm long, PM Fiber w/ FC/APC Connector or Collimator
GENERAL (SEED MOdule and Amplifier Module)
  • Seed Laser Module: 300(W) x 200(D) x 80(H) mm
  • Amplifier Laser Module: 300(W) x 200(D) x 80(H) mm
  • Operating Temperature Range: -10 to +40C
  • Storage Temperature: -10 to +80C
  • Power Supply Input Requirement (Seed and Amplifier): +12VDC (± 0.25VDC)
  • Power Consumption at Room Temperature (typ): 50 Watts
  • Cooling Method: All Air Cooled
  • RF Input Port: SMA
  • Power Supply Connectors: 2W2C
  • Electrical Connectors: D-sub 9 pin
  • Optical Fiber: PM1550, NA=0.12
  • Optical Output Termination: FC/APC connector

Product Overview:

These 1550nm Fiber Lasers for LiDAR applications are ultra-high stability, high output power narrow linewidth light sources offering single mode, linear polarized nanosecond pulsed all fiber laser source with a master oscillator power amplifier. These units are designed for three dimensional imaging, wind detection and ranging LiDAR systems. No post installation service is required for these versatile, ready-to-use and durable laser sources designed specifically for various LiDAR applications.

LiDAR 1550nm Fiber Laser Configuration:
These narrow linewidth all PM fiber based nano-second pulsed lasers are based on a MOPA master oscillator power amplifier design. The nanosecond fiber laser system consists of two compact modules: 1) the seed laser module and 2) the power amplifier module. In the seed laser module, a CW 15 kHz single mode diode laser with eye-safe operation at 1550nm emission is utilized. This narrow linewidth enables a very long coherence length over over 20 killometers. This long coherence length makes these seed sources an excellent choice for long distance LiDAR applications. The seed laser is split by an optical couple. One milliwatt of the output power splits to an FC/APC receptacle as a local oscillator, while the seed laser from the other output of the optical coupler is connected to an acoustic optical modulator to generate a pulse train with 100 to 1,000 nanosecond pulse widths at a 10 kHz ~ 20 kHz rep. rate. The acoustic optical modulator serves two purposes. First, it is an ultra-high extinction ratio (>100 dB) optical pulse generator. Second, it is a frequency shifter (+80MHz) for doppler detection. A pre-amp PM fiber amplifier is used to compensate AOM insertion loss and boost the pulse energy. The pulse train then goes to the power amplifier module.

1550nm Nanosecond Fiber Laser Power Amplifier Module:
The power amplifier module consists of a multi-stage amplifier. At each stage of amplification, fibers with increasing mode-field diameter are used to minimize inherent nonlinear effects. The largest nonlinear effect for the system is stimulated Brillouin scattering. This effect arises from the interaction between optical field and acoustic photons in the fiber. This effect limits the maximum output power and can also damage the laser components in the optical path. Suppression of SBS generation is a key factor in the design of these laser systems.

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