Search for dissertations about: "linewidth narrowing"

Found 3 swedish dissertations containing the words linewidth narrowing.

2. 1. Nanosecond tandem optical parametric oscillators for mid-infrared generation

   Author : Markus Henriksson; Fredrik Laurell; Gunnar Rustad; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; nonlinear optics; optical parametric oscillators; quasi-phase matching; mid-infrared; linewidth narrowing; volume Bragg gratings.; Physics; Fysik;

   Abstract : This thesis discusses a new scheme for generating radiation in the mid infrared spectral region, especially the 3.5-5 µm range. The scheme uses established Nd3+-lasers at 1.06 µm and down conversion in nonlinear optical crystals. READ MORE

4. 2. High-Sensitivity High-Resolution Diode Laser Spectroscopy in the Near-Infrared Region

   Author : Viacheslav G. Avetisov; Atomfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:1996:Avetisov;

   Abstract : High-resolution spectroscopy measurements have been performed using near-infrared diode lasers. Special emphasis was placed upon high accuracy absorption lineshape measurements, which provide the basis for quantitative gas analysis. For this purpose, relevant spectral characteristics of the radiation emitted by diode lasers were studied. READ MORE

5. 3. Optical Frequency Comb Fourier Transform Spectroscopy

   Author : Alexandra C. Johansson; Aleksandra Foltynowicz; Ove Axner; Jürgen Röpcke; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Optical frequency comb spectroscopy; Fourier transform; molecular absorption dispersion; fysik; Physics;

   Abstract : Fourier transform spectroscopy (FTS) based on optical frequency combs is an excellent spectroscopic tool as it provides broadband molecular spectra with high spectral resolution and an absolutely calibrated frequency scale. Moreover, the equidistant comb mode structure enables efficient coupling of the comb to enhancement cavities, yielding high detection sensitivity. READ MORE