Spectral range, free

Figure 2. Microresonator with two adjacent waveguides serving as in- and output port (a) top view (b) schematic spectral response to a constant input intensity (FSR free spectral range).

The calculated ring resonator output spectrum in Fig. 9.16 is based on (9.9) and shows a series of resonance minima spaced at intervals known as the free spectral range A/.,.SR ... 

The ratio of the 3 dB resonance line width, A23dB, to the free spectral range is known as the finesse ... 

Free shear flows, 77 757-760 Free sintering, 73 300 Free spectral range (FSR), 74 671-672 Free surface vaporization, 24 724-725 Free-vibration instruments, 27 745 Free-volume coefficient of self-diffusion, 23 102... 

Figure 3. (a) Plan view image of a SOI waveguide microspectrometer with 0.08 nm channel spacing and 20 nm free spectral range, (b) Plan view and a cross-section scanning electron microscope view of the waveguide apertures at the combiner output. 

Free Spectral Range Resolution. . . . Scanning Speed. . Field of View. . . Optics. ... 

A multiwavelength, dual beam optical system with 256 detectors operating in a free spectral range of 200 to 800 nm has been designed and implemented for use with a liquid chromatograph. 

We have undertaken an experiment to try to improve the performance of pulse amplifier experiments. The system is shown schematically in figure 2. It consisted of a continuous-wave C102 dye laser amplified in three stages by a frequency tripled Q-switched NdtYAG laser. The output energy was approximately 2.0 mJ in a 150 MHz linewidth and was up-shifted from the continuous-wave laser by 60 MHz caused by the frequency chirp. This light was then spectrally filtered in a confocal interferometer with a finesse of 40 and a free spectral range of 300 MHz. The linewidth of the filtered radiation was approximately 16 MHz. 

Frequency stabilisation and scanning is accomplished by use of a confocal cavity of free spectral range matched to the dye laser repetition rate. Phase modulated sidebands are put on to the mode spectrum of the mode-locked pulse train and used to lock the laser to the reference cavity. The frequency modulation technique is also used to lock the ultra-violet enhancement cavity to the mode-locked pulse train. 

Figure 9. Brillouin spectrum of commercial Mylar film at larger free-spectral range than in Figure 8...

These quantities characterize a Fabry-Perot cavity, or a laser cavity. I is the cavity spacing, and 21 is the round-trip path length. The free spectral range is the wavenumber interval between successive longitudinal cavity modes. 

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