Constraints on doubly charged Higgs interactions at linear collider

Production of a single doubly charged Higgs boson Delta(--) in polarized e(+)e(-) and e(+)gamma collision modes of the linear collider have been investigated. The mass range of Delta(--) to be probed extends up to the collision energy, The diagonal lepton number violating Yukawa coupling h(ee) will be tested at least three orders of magnitude more strictly than in present experiments