The subject invention discloses a sealing assembly that includes a first component and a second component moveable into and out of mating engagement to form a seal therebetween. The position of the instrument is recorded by a tracking system and a treatment zone image is produced which depicts the treatment zone along with patient reference points also marked by the instrument. Further, even when an electrode is formed near the waveguide and the current is injected, since the current is not injected near the silicon waveguide, laser oscillation through the silicon waveguide can not be attained.