Washington, October 6 : American talk show host David Letterman has publicly apologised to his wife Regina Lasko after his sexual affairs were exposed in an alleged extortion plot against him.

The TV host issued the apology during a taping of his "Late Show with David Letterman", his first appearance since the revelations.

"She has been horribly hurt by my behavior, and when something happens like that, if you hurt a person and it''s your responsibility, you try to fix it," People magazine quoted him as saying.

"At that point, there''s only two things that can happen: Either you''re going to make some progress and get it fixed, or you''re going to fall short and perhaps not get it fixed, so let me tell you folks, I got my work cut out for me," he added.

The 62-year-old also said sorry to the present and former staff of his production company, Worldwide Pants.

He said: "I''m terribly sorry that I put the staff in that position. Inadvertently, I just wasn''t thinking ahead.

"And, moreover, the staff here has been wonderfully supportive to me, not just through this furor, but through all the years that we''ve been on television and especially all the years here at CBS, so, again, my thanks to the staff for, once again, putting up with something stupid I''ve gotten myself involved in." (ANI)