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Conferences > QELS > 1989 > TUHH > TUHH3
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1989),
  • paper TUHH3

Hyperfine structure of hydrogen Iodide in the 4.85-µm range using frequency modulation spectroscopy

HARIS RIRIS, LIANG-GUO WANG, and THOMAS F. GALLAGHER

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Abstract

Frequency modulation spectroscopy (FMS) is a sensitive form of absorption spectroscopy which is in principle quantum noise limited. It was first demonstrated by Bjorkland1 who achieved quantum noise limited detection using a visible dye laser and an external electrooptic modulator. Diode lasers are particularly suited for FMS since they can be easily modulated at gigahertz rates by modulating the injection current. Recently, Cooper and Carlisle2 demonstrated quantum noise limited detection using a lead-salt diode laser in the mid-IR range.

© 1989 Optical Society of America

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