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We demonstrate the ability to generate broadband high-intensity laser picosecond pulses using a custom-built optical parametric generator pumped by the second-harmonic output of a 60-ps Nd:YAG laser with injection seeding of the signal wave provided by a broadband cavityless dye laser. While there has been marked progress in recent years in the implementation of broadband picosecond CARS for optical diagnostics, the need for development of broadband light sources of picosecond range still exist. Over the last several years, the broadband picosecond dye laser design, based on side-pumped oscillator and preamplifier cells, followed by an end-pumped final amplifier cell has been employed. Our strategy is to utilize an OPG for the amplification of broadband picosecond radiation, coming from one-stage modeless dye laser. Virtually, the laser is two-passes amplifier of broadband (~ 200 - 300 cm-1) spontaneous emission (ASE) pumped by the frequency-doubled, nearly 60 ps pulse duration of a 1-30-Hz repetition rate Nd:YAG laser. A broadband high reflection mirror was placed within 3 mm of the short (~15 mm) dye cell allowing temporal overlap between the reflected spontaneous emission (SE) photons from dye and the ~60 ps pump beam at 532 nm within the dye solution. The absence of a cavity allows the generation of an output beam without any mode structure. Amplified broadband spontaneous emission from the dye cell is further amplified in the subsequent KTP- crystal, also pumped by the frequency-doubled, nearly 60 ps pulses of Nd:YAG laser. For the OPG we utilized non-collinear scheme of phase and group matching. The implementation of this light source is the first step toward our goal of developing the broadband picosecond CARS system for frequency domain applications