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Generation and optical parametric amplification of picosecond supercontinuum
Jing Zhang1, Qiu-lin Zhang, Dong-xiang Zhang
1Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
Applied Optics
|December 3, 2010
Summary
We demonstrated optical parametric amplification (OPA) using supercontinuum (SC) generated in water. This technique achieved a tunable range of 430–2035 nm with 32% energy conversion efficiency, enabling detailed SC pulse analysis.
Area of Science:
- Nonlinear Optics
- Laser Physics
- Materials Science
Background:
- Supercontinuum (SC) generation is crucial for tunable light sources.
- Optical Parametric Amplification (OPA) offers broad tunability.
- Investigating SC properties requires advanced characterization techniques.
Purpose of the Study:
- To characterize optical parametric amplification (OPA) seeded by water-generated supercontinuum (SC).
- To determine the tunable spectral range and energy conversion efficiency of the OPA system.
- To analyze the chirp characteristics of SC pulses using OPA.
Main Methods:
- Generated SC in deionized water using a 1064 nm laser.
- Utilized a 355 nm pumped OPA seeded by the SC.
- Measured SC spectrum, OPA tuning range, energy conversion efficiency, and pulse chirp.
Main Results:
- Achieved SC spectrum from 426 to 943 nm, overlapping with OPA tuning.
- Demonstrated OPA tunable range from 430 to 2035 nm.
- Obtained maximum OPA energy conversion efficiency of 32% and measured SC chirp (-10.72 ps delay).
Conclusions:
- Water-based SC is effective for seeding a broadly tunable OPA.
- The OPA system provides efficient wavelength conversion and spectral coverage.
- OPA characterization reveals significant chirp in SC pulses, dependent on wavelength.
