予稿集 p.140-141

PE- 31
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Injection seeding auto-alignment system
for a continuous sodium lidar observation
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K.Koizumi , T.D.Kawahara
FGHIJIK
Faculty of Engineering, Shinshu University
Abstract We measure the temperature of mesopause region with an injection-seeded sodium lidar
transmitter. The seed laser alignment is a key for the injection seeding in the continuous observation.
Thus, we made an auto-alignment system with two PIN photo diodes in the seeder line. It is confirmed
that the system corrected the alignment within an angle of ~1.5 mrad.
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Figure 1. Auto-alignment system using half
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mirrors and PIN photo diodes.
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Figure 2. Schematics of an experimental setup of
laser alignment system.
Figure 3. Results of alignment experiments. The
square and the diamonds indicate results from
alignment by hands and auto-alignment.
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