Phase locking of 2.324 and 2.959 terahertz quantum cascade lasers using a Schottky diode harmonic mixer.

نویسندگان

  • Andriy Danylov
  • Neal Erickson
  • Alexander Light
  • Jerry Waldman
چکیده

The 23rd and 31st harmonics of a microwave signal generated in a novel THz balanced Schottky diode mixer were used as a frequency stable reference source to phase lock solid-nitrogen-cooled 2.324 and 2.959 THz quantum cascade lasers. Hertz-level frequency stability was achieved, which was maintained for several hours.

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منابع مشابه

Phase locking of 2.324 and 2.959 THz quantum cascade lasers using a Schottky diode harmonic mixer

The 23rd and 31st harmonics of a microwave signal generated in a novel THz balanced Schottky diode mixer were used as a frequency stable reference source to phase lock solid-nitrogen-cooled 2.324 and 2.959 THz QCLs. Hertz level frequency stability was achieved, which was maintained for several hours. Steady improvements in THz QCL performance over the last decade [1] has generated considerable ...

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Widely tunable quantum cascade laser-based terahertz source.

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2.32 THz quantum cascade laser frequency-locked to the harmonic of a microwave synthesizer source.

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Spectral behavior of a terahertz quantum-cascade laser.

In this paper, the spectral behavior of two terahertz (THz) quantum cascade lasers (QCLs) operating both pulsed and cw is characterized using a heterodyne technique. Both lasers emitting around 2.5 THz are combined onto a whisker contact Schottky diode mixer mounted in a corner cube reflector. The resulting difference frequency beatnote is recorded in both the time and frequency domain. From th...

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عنوان ژورنال:
  • Optics letters

دوره 40 21  شماره 

صفحات  -

تاریخ انتشار 2015