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Single heterostructure lasers: a picosecond light pulse source.

F D Nunes1

  • 1Universidade Federal do Rio Grande de Norte, Departamento de Fisica Teorica e Experimental, 59.000 Natal, Rio Grande do Norte, Brazil.

Applied Optics
|January 1, 1985
PubMed
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This study introduces single heterostructure semiconductor lasers as a novel source for high-power coherent light pulses. These lasers offer tunable photon energy, picosecond pulse durations, and high repetition rates for advanced applications.

Area of Science:

  • Optics and Photonics
  • Semiconductor Physics

Background:

  • Single heterostructure semiconductor lasers are typically used for continuous wave or low-power pulsed emission.
  • The Q-switching regime in semiconductor lasers is known for generating high-power pulses, but its application in single heterostructure devices for specific pulse characteristics is less explored.

Purpose of the Study:

  • To propose and investigate a new application of single heterostructure semiconductor lasers.
  • To demonstrate their capability as a source for high-power, short-duration coherent light pulses with tunable energy.

Main Methods:

  • Operating single heterostructure semiconductor lasers in the Q-switching regime.
  • Characterizing the output pulses for parameters such as pulse width (halfwidth), repetition rate, and photon energy tunability.

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Main Results:

  • Single heterostructure lasers, when operated in Q-switching mode, produce high-power coherent light pulses.
  • Achieved pulse halfwidths are on the order of 10 picoseconds.
  • Repetition rates up to hundreds of hertz were observed.
  • The photon energy output of these pulses is tunable.

Conclusions:

  • Single heterostructure semiconductor lasers can be effectively utilized as a source for high-power picosecond coherent light pulses.
  • The demonstrated tunable photon energy and high repetition rates open new avenues for applications in areas requiring precisely controlled light pulses.