Water vapor absorption lines at 820 nm, dotted lines: suitable for vertical sounding; dashed lines: suitable for measurements in horizontal direction.
Schematic structure of an ECDL in Littman–Metcalf configuration, the first order diffraction of the diode laser beam from a grating is reflected back into the diode by means of a retroreflector.
The injection seeder setup, FC, precision fiber coupler, XCOF, OMP, and DAQ.
Characteristics of diode lasers from Sacher Lasertechnik; (a) The input/output at 820 nm and (b) output power as function of wavelength (when tuned with the motor drive).
Response time behavior of OMP1 (bottom) to trigger signals (top) of frequency: (a) 250 and (b) 500 Hz.
Characteristics of OMP2, (a) response time behavior for inputs to channels 1 and 2 and (b) crosstalk between channels 1 and 2 when channel 2 is on by the trigger signal.
Typical stability behavior of the diode lasers during more than 180 min of operation of the seeder, laser1 to laser2 to .
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