  Measurement of the Yukawa couplings of the first-generation leptoquarks has
been studied for e+e- collisions at TESLA, at sqrt(s)=800 GeV. By combining
measurements from different production and decay channels, determination of
Yukawa couplings with precision on the few per-cent level is possible. TESLA
will be sensitive to very small leptoquark Yukawa couplings not accessible at
LHC, down to lambda ~ 0.05 [e]. Distinction between left-handed and
right-handed Yukawa couplings is feasible even for leptoquark masses very close
to the pair-production kinematic limit.
