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Saturated semiconductor optical amplifier phase modulation for long range laser radar applications.

Jennifer L Carns1, Bradley D Duncan, Matthew P Dierking

  • 1Air Force Research Laboratory, 3109 Hobson Way, Building 622, Wright-Patterson Air Force Base, Ohio 45433-7700, USA. carnsj1@udayton.edu

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|August 22, 2012
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Summary
This summary is machine-generated.

Semiconductor optical amplifiers can act as phase modulators for long-range laser radar. This study explores their use with high peak power pulses and demonstrates a proof-of-concept system.

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Area of Science:

  • Optoelectronics
  • Laser Systems
  • Optical Amplification

Background:

  • Laser radar (LIDAR) systems require precise phase modulation for accurate ranging.
  • Semiconductor optical amplifiers (SOAs) offer potential for compact and efficient modulation.

Purpose of the Study:

  • To investigate the feasibility of using a saturated semiconductor optical amplifier (SOA) as a phase modulator for laser radar.
  • To analyze the phase and amplitude modulation characteristics of high peak power Gaussian pulses in SOAs.
  • To demonstrate a proof-of-concept laser radar system utilizing SOA-based phase modulation.

Main Methods:

  • Operating a semiconductor optical amplifier in its saturation regime.
  • Analyzing the modulation response to high peak power Gaussian laser pulses.
  • Conducting a laboratory demonstration with a stationary target.

Main Results:

  • The semiconductor optical amplifier exhibits phase and amplitude modulation when saturated by high peak power pulses.
  • The modulation characteristics impact the ideal pulse response of a laser radar system.
  • Successful interrogation of a stationary target using phase-modulated pulses was achieved.

Conclusions:

  • Saturated semiconductor optical amplifiers are viable phase modulators for laser radar applications.
  • Understanding pulse-induced modulation is crucial for optimizing laser radar performance.
  • This technology shows promise for advanced long-range sensing.