Khan suffered a second successive defeat on Saturday night when Garcia stopped him in the fourth round of their WBA and WBC light-welterweight unification bout.
The Briton was knocked down three times in a damaging upset that destroyed hopes of a money-spinning match-up with Floyd Mayweather Jr.
The defeat led to calls for Khan to retire, notably from current IBF super-middleweight champion Froch who said: “When you get knocked out, get hurt and get damaged it’s painful to watch.
"Unfortunately you can’t train the chin. He’s got a vulnerability there that’s been exposed more than once.”
But Khan has insisted he has no plans to stop, saying: "Carl's always got his little things to say, I think I'll leave it at that really.
"I'm a young fighter, I'm 25, I'm not talking about retiring, I'm still young and I've got a lot in me.
"If he wants to retire, he can retire, he's talking about retiring. I'm in a tougher division. I'm fighting better opposition and I'm a bigger name than him, and I think that's what burns him really."
Khan now has a 26-3 record with 18 knockouts and two stoppage defeats. He suffered his first professional defeat in a first-round upset by Breidis Prescott in 2008.
He said: "People are going to say things after this fight, people said things after the Prescott fight, and see how I came back after that. I'll come back stronger, I'm still young, I'm still hungry and I'll come back a lot better and a lot stronger."