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Ultrafast double-pulse parametric amplification for precision Ramsey metrology
D Z Kandula1, A Renault, Ch Gohle
1Atomic, Molecular, and Laser Physics Group, Laser Centre Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands. kjeld@nat.vu.nl
Optics Express
|June 12, 2008
Summary
We achieved phase-stable, millijoule-level parametric amplification of laser pulse pairs. This technique enables precise phase control for advanced spectroscopy applications.
Area of Science:
- Quantum optics
- Laser physics
- Spectroscopy
Background:
- Ti:Sapphire lasers are crucial for generating ultrashort pulses.
- Parametric amplification enhances pulse energy.
- Precise control over pulse-to-pulse phase is vital for advanced spectroscopic techniques.
Purpose of the Study:
- To demonstrate phase-stable, millijoule-level parametric amplification of pulse pairs.
- To accurately measure and control the amplifier-induced phase shift.
- To assess the system's suitability for Ramsey spectroscopy.
Main Methods:
- Utilizing a Ti:Sapphire frequency comb laser as the source.
- Employing parametric amplification to increase pulse energy.
- Interferometric measurement of the phase shift between amplified pulse pairs.
Main Results:
- Achieved phase-stable, millijoule-level parametric amplification.
- Measured amplifier-induced phase shifts with 10 mrad accuracy.
- Demonstrated phase stability as high as 20 mrad rms (1/300th of an optical cycle).
Conclusions:
- The developed system offers precise phase control for amplified pulse pairs.
- The high phase stability makes it suitable for Ramsey spectroscopy.
- Harmonic upconversion in nonlinear media can be used for short-wavelength applications.
