Fiber Optical Parametric Oscillator With Wide Tuning Range and Fixed Repetition Rate
- Resource Type
- Periodical
- Authors
- Takahashi, S.; Shou, J.; Dai, G.; Ozeki, Y.
- Source
- IEEE Photonics Technology Letters IEEE Photon. Technol. Lett. Photonics Technology Letters, IEEE. 34(23):1293-1296 Dec, 2022
- Subject
- Engineered Materials, Dielectrics and Plasmas
Photonics and Electrooptics
Fiber lasers
Laser tuning
Pump lasers
Optical fiber amplifiers
Optical fiber polarization
Optical fiber dispersion
Oscillators
Fiber laser
four-wave mixing
fiber-based optical parametric oscillator
coherent Raman scattering microscopy
- Language
- ISSN
- 1041-1135
1941-0174
We present a widely wavelength-tunable fiber-based optical parametric oscillator (FOPO) with a fixed repetition rate using four-wave mixing in a photonic crystal fiber and an intracavity spectral filter. The FOPO produces nearly transform-limited pulses with a spectral width of 1.1 nm and a pulse duration of 1.0 ps. By changing the wavelength of a pump laser and the passband of the spectral filter, the tuning range between 832 and 922 nm is achieved. Over the entire range, the displacement of a delay stage required to match the cavity round trip time with the period of the pump pulses is as small as 0.8 mm. The present FOPO synchronized with a low-noise picosecond laser will be useful for sensitive and broadband vibrational imaging by stimulated Raman scattering microscopy.