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High-repetition-rate femtosecond optical parametric oscillator based on RbTiOAsO(4)
Optics Letters
|October 27, 2009
Summary
A new femtosecond optical parametric oscillator using RbTiOAsO(4) crystal achieves broad tuning. This laser system demonstrates significant power in both signal and idler branches, enabling new research possibilities.
Area of Science:
- Nonlinear Optics
- Laser Physics
- Materials Science
Background:
- Femtosecond optical parametric oscillators (OPOs) are crucial for generating tunable ultrashort laser pulses.
- Development of novel nonlinear optical crystals is essential for advancing OPO performance.
- Rubidium titanyl arsenate (RbTiOAsO4) is a promising nonlinear crystal for OPO applications.
Purpose of the Study:
- To demonstrate a high-repetition-rate femtosecond OPO utilizing the RbTiOAsO4 nonlinear crystal.
- To characterize the tuning range and output power of the developed OPO system.
- To explore the potential for extending the operational wavelength range of the OPO.
Main Methods:
- A Ti:sapphire laser was used to pump a femtosecond optical parametric oscillator.
- The OPO incorporated the nonlinear optical crystal RbTiOAsO4.
- Signal and idler output characteristics, including tuning range and power, were measured.
Main Results:
- The OPO demonstrated tuning from 1.03 to 1.3 microm (signal) and 2.15 to 3.65 microm (idler).
- Output powers reached up to 250 mW for the signal and 200 mW for the idler.
- The potential for extending the idler tuning range beyond 3.65 microm was investigated.
Conclusions:
- The RbTiOAsO4 crystal enables efficient operation of a high-repetition-rate femtosecond OPO.
- The demonstrated tuning range and output powers are suitable for various spectroscopic applications.
- Further research can extend the tuning range, broadening the applicability of this OPO technology.
