Chelsea took the lead two minutes before half-time after Didier Drogba outmuscled Spurs defender William Gallas and fired a ferocious strike past Carlo Cudicini.
The Blues were awarded a controversial second in the 49th minute, when referee Martin Atkinson judged Juan Mata’s effort to have crossed the line – replays showed the Spanish midfielder’s shot was blocked by captain John Terry.
Tottenham responded with Gareth Bale finishing from close range – but Chelsea restored their two-goal advantage with Ramires breaking past the Spurs defence and chipping Cudcini, before Frank Lampard and Florent Malouda both netted in the final 10 minutes.
“I thought it hit me and stayed out but I haven’t seen it on the replays,” the Chelsea captain told ITV.
“We’ve been calling for goal-line technology for a very long time. Let’s hope that people make the right decisions.
“It was an important game today and fortunately it went our way. Throughout the season things go with you and go against you and today it’s gone with us and we’re delighted.
“I thought we were the better side and scored some great goals.”
Terry’s team-mate Lampard, who scored a superb free-kick, heaped praise on Chelsea after they reached their fourth FA Cup final in six years and set up a clash with Liverpool on 5 May.
“We scored a lot of goals and created a lot of chances today and over the course of the game we deserved to win,” added Lampard.
“It was an amazing game. I thought we played brilliantly. The first half was tough.
“Didier scored an absolute belter. I think we deserved to win that game with the amount we created. Tottenham are a top side but today we won it well.”
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