Fig. 1. FOPO used for CARS microscopy

Fig. 2. Experimental setup and phase matching curve. (a) Experimental setup of FOPO; (b) calculated signal wavelength for different pump wavelengths

Fig. 3. Experimental results. (a) Output powers of signal pulse at different wavelengths; (b) pulse duration and spectrum of signal pulse

Fig. 4. Fiber optical parametric oscillator and amplifier

Fig. 5. Experimental results. (a) Spectra of signal pulses for FOPG, FOPO and FOPA; (b) evolution of output powers of amplified signal pulses in FOPG, FOPO and FOPA as function of pump power

Fig. 6. Experimental setup of FOPO

Fig. 7. Parametric gain spectra and tunable range. (a) Parametric gain spectra; (b) wavelength tuning results by changing delay stage

Fig. 8. Experimental setup and physical diagram. (a) Experimental setup of FOPO; (b) photo of all-fiber integrated CARS source

Fig. 9. Experimental results. (a) Spectra of FOPO in AIC and AOC configurations; (b) output power curves of AIC and AOC configurations

Fig. 10. Schematic of setup for CARS spectroscopy

Fig. 11. CARS spectrum and image. (a) CARS spectrum of ethanol sample for AIC scheme; (b) CARS image of mouse ear adipose tissue