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Ultrashort pulsewidth measurement PH413 Lasers & Photonics PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

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Page 1: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Ultrashort pulsewidth

measurement

PH413 Lasers & PhotonicsPH413 Lasers & PhotonicsLecture 40

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 2: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Contents

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 3: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Underlying principle

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 4: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Why measure ultrashort pulses?

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 5: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Linear optical pulse width measurement:

Michelson interferometer

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 6: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 7: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 8: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 9: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Nonlinear optical pulse width measurement

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 10: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Two-photon fluorescence

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 11: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 12: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 13: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 14: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 15: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Second harmonic generation

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 16: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Femtosecond pulse width measurement

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 17: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 18: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 19: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

Rotating mirror method

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 20: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 21: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

Page 22: PH413 Lasers & Photonics · 2011. 11. 16. · Ultrashort pulsewidth measurement PH413 Lasers & Photonics Lecture 40 A.K.Sharma 14.11.11 Department of Physics, IIT Guwahati

A.K.Sharma

14.11.11

Department of Physics, IIT Guwahati

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