Laser Parameters and Systems Overview Quiz
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Questions and Answers

In laser action, what occurs after photons are emitted?

  • Creation of new energy states
  • Formation of valence bands
  • Absorption of electrons
  • System transition between two energy states (correct)
  • What occurs in semiconductor lasers involving the conduction and valence bands?

  • Formation of new semiconductor materials
  • Two states are electronic states in an atom or ion (correct)
  • Transition between two valence bands
  • Vibrational modes of molecules
  • What is the term for the emission of photons when an electron spontaneously decays from a higher to a lower energy state?

  • Spontaneous emission (correct)
  • Stimulated emission
  • Conduction emission
  • Valence emission
  • Which process results in two photons of the same energy and in phase?

    <p>Stimulated emission</p> Signup and view all the answers

    What effect does stimulated emission have on the polarization of the emitted photons?

    <p>Same polarization</p> Signup and view all the answers

    What is the result when a photon stimulates an electron to transfer between two energy states?

    <p>Emission of another photon</p> Signup and view all the answers

    What is the main difference between continuous wave (CW) lasers and pulsed lasers?

    <p>Pulsed lasers achieve higher pulse energy than CW lasers</p> Signup and view all the answers

    Who was responsible for demonstrating the first dye LASER action at IBM Labs in 1966?

    <p>Peter Sorokin</p> Signup and view all the answers

    What was significant about the LASER system developed in 2010 at Lawrence Livermore National Labs?

    <p>It was the first 10 Petawatt LASER system developed</p> Signup and view all the answers

    Which LASER system operates at ELI-NP Magurele with a power of 10 Petawatt?

    <p>Solid State LASER</p> Signup and view all the answers

    In what year was the first titanium sapphire LASER developed at MIT Lincoln Labs?

    <p>1982</p> Signup and view all the answers

    Why are pulsed operation lasers usually preferred to achieve higher pulse energy?

    <p>To achieve higher pulse energy</p> Signup and view all the answers

    Which type of laser is divided based on the lasing material/medium?

    <p>Liquid and Dye Laser</p> Signup and view all the answers

    What is the typical wavelength range for Helium-neon lasers?

    <p>Microwatts to tens of milliwatts</p> Signup and view all the answers

    Which laser type is noted for having Nd: YAG as one of its examples?

    <p>Solid State Laser</p> Signup and view all the answers

    What process is laser action based on that involves the population inversion?

    <p>The population inversion process</p> Signup and view all the answers

    Which material is commonly used in Semiconductor/Diode Lasers?

    <p>GaAs</p> Signup and view all the answers

    In terms of average power range, which laser type operates in the milliwatts to a hundred watts range?

    <p>Gas Laser</p> Signup and view all the answers

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