Chem120A+Notes+-+Harmonic+Oscillator

Chem120A+Notes+-+Harmonic+Oscillator - Achieve Time...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Achieve Time Resolution by Ultrafast Laser Pulse
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Mode-locking
Background image of page 2
Why Needs Broad Band Lasing Medium? Absorption and emission spectra of Ti:Sapphire (nm) IN±EN²³±y´µ¶u· Ti:Sapphire spectral properties For Ti:Sapphire, strong flUorescence exists in the wavelength range from 700 nm to 900 nm. So the band width 1 t ∆ ≈ The flUorescence band width of lasing mediUm 1 2 8 9 -1 15 -1 2 2 1 1 2 3 10 (m/s) 10 (m ) 700 900 1 10 s c c π λ Ω = -   = × × - ×     ≈ × The width of short pUlse can be estimated bY and the pUlse dUration 15 10 s = 1 fs t - ∆ ≈
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Vibrational Energy Levels
Background image of page 4
Vibrational Motion of Diatomic Molecule r B A r ( ) V r e r Newtonian Equation of Motion 2 2 ( ) d r dV r m dt dr = - Vibrating Dissociation A B A B m m m m m = + The reduced mass ( ) 0 e dV r dr = The equilibrium distance at which e r
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Harmonic Oscillator Approximation r ( ) V r e r If diatomic molecule is vibrating around its equilibrium distance, cos( ) e r r A t ϖ
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 12

Chem120A+Notes+-+Harmonic+Oscillator - Achieve Time...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online