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第28講 Record Short Pulses & MIFA
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L28BR
L28_A
Record Short Pulses & MIFA
2.1 fs (2011)
FROG‐CRAB method
Time‐of‐flight (TOF) spectrometer
2.1 fs (2011)
FROG‐CRAB method
Time‐of‐flight (TOF) spectrometer
Info built in the electron spectrogram
Measurement results
Modified Interferometric Field Autocorrelation (MIFA)
SHG with thick crystal
SHG formalism
Insight
L28_B
Modified Interferometric Field Autocorrelation (MIFA)
Modified field autocorrelation function
MIFA: Frequency‐selective IA
Example: Chirped pulse with double peaks
How to retrieve G'1(τ) from S1(τ)?
What can we know from G'1(τ)?
Two traces & complete phase retrieval
How to retrieve the complete phase
Experimental results
400 fs MIFA setup
Record sensitivity
7.2 fs MIFA setup
7.2 fs pulse measurement
Mid‐infrared MIFA setup
Modified field autocorrelation function
MIFA: Frequency‐selective IA
Example: Chirped pulse with double peaks
How to retrieve G'1(τ) from S1(τ)?
What can we know from G'1(τ)?
Two traces & complete phase retrieval
How to retrieve the complete phase
Experimental results
400 fs MIFA setup
Record sensitivity
7.2 fs MIFA setup
7.2 fs pulse measurement
Mid‐infrared MIFA setup
MIR pulse measurement
Advantages & limitations
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