title: Broadband tunable optical parametric amplification from a single 50 MHz ultrafast fiber laser.
abstract: We have demonstrated a 0.7 microm - 1.9 microm wavelength-tunable light source based on a single-pass optical parametric amplification (OPA) in a multiperiod magnesium oxide-doped periodically poled lithium niobate crystal. The OPA pump was a frequency-doubled ultrafast ytterbium-doped fiber oscillator, and the residual 1040 nm laser power after frequency doubling was recycled to generate a supercontinuum seeding source. Compared with conventional OPAs, this system is free from timing jitter between the pump laser and the seeding source. Over 50% conversion efficiency was obtained with 10 nJ pump energy. Combined with a 50 MHz repetition rate, this versatile source is ideal for biomedical and spectroscopic applications.
authors.affiliation: Department of Physics, National Taiwan University, Taipei, Taiwan, ROC.
authors.forename: Yan-Wei
authors.initials: YW
authors.lastname: Tzeng
authors.forename: Yen-Yin
authors.initials: YY
authors.lastname: Lin
authors.forename: Chen-Han
authors.initials: CH
authors.lastname: Huang
authors.forename: Jian-Ming
authors.initials: JM
authors.lastname: Liu
authors.forename: Hsiang-Chen
authors.initials: HC
authors.lastname: Chui
authors.forename: Hsiang-Lin
authors.initials: HL
authors.lastname: Liu
authors.forename: James M
authors.initials: JM
authors.lastname: Stone
authors.forename: Jonathan C
authors.initials: JC
authors.lastname: Knight
authors.forename: Shi-Wei
authors.initials: SW
authors.lastname: Chu
mesh_terms: D000669:Amplifiers, Electronic; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity