Michelson wavemeter

Fig, 4,65, Signal sequences in the two detection channels of the traveling Michelson wavemeter. The grey signal pulses are not counted... 

There are several different designs of Michelson wavemeters that are commercially available and are described in [4.78-4.80]. 

The device is calibrated with different lines from a cw dye laser that are simultaneously measured with the traveling Michelson wavemeter (see above). This calibration allows ... 

Figure 4.64 illustrates the principle of a traveling-wave Michelson-type interferometer as used in our laboratory. Such a wavemeter was first demonstrated in a slightly different version by Hall and Lee [4.67] and by Kowalski et al. [4.72]. The beams Sr of a reference laser and of a laser with unknown wavelength traverse the interferometer on identical paths, but in opposite directions. Both incoming beams are split into two partial beams by... 

The different types of wavemeters for very accurate measurements of laser wavelengths are based on modifications of the Michelson interferometer [184], the Fizeau interferometer [185], or on a combination of several Fabry-Perot interferometers with different free spectral ranges [186-188]. The wavelength is measured either by monitoring the spatial distribution of the interference pattern with photodiode arrays, or by nsing traveling devices with electronic counting of the interference... 

Figure 4.69 illustrates the principle of a traveling-wave Michelson-type interferometer as used in our laboratory. Such a wavemeter was first demonstrated in a slightly different version by Hall and Lee [184] and by Kowalski et al. [190]. The beams 5r of a reference laser and of a laser with unknown wavelength Xx traverse the interferometer on identical paths, but in opposite directions. Both incoming beams are split into two partial beams by the beam splitters BSl and BS2, respectively. One of the partial beams travels the constant path BS1-P-T3-P-BS2 for the reference beam, and in the opposite direction for the beam Bx. The second partial beam travels the variable path BS1-T1-M3-M4-T2-BS2 for 5r, and in the opposite direction for Bx. The moving corner-cube reflectors T1 and T2 are mounted on a carriage, which either travels with wheels on rods or slides on an airtrack. 

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