Continuum Precision II Series - Frequency Overlap of Seeder and Host Laser

8
1.1.7 Frequency Overlap of Seeder and Host Laser
For proper seeding it is necessary that the frequency of the seed and host lasers overlap. As
previously mentioned, this is done by tuning the temperature of the seed laser to match that of the
host laser’s Nd:YAG rods, and by temperature stabilizing the host laser’s Nd:YAG rods to ensure
long-term frequency overlap. Figure 1-8 depicts the seeder frequency tuning curve, the longitudinal
mode spacing of the host laser, and the superposition of the seeder tuning curve on the host laser
longitudinal modes.
Important Points on the Seeder Tuning Curve
Host Laser Modes
Figure 1-8: Proper Tuning of Seeder Frequency