[16p-311-1~20] 3.6 超高速・高強度レーザー

▲ [16p-311-16] Soliton pumping based mid-infrared optical frequency comb

〇金 磊¹、山中 真仁¹、Sonnenschein Volker¹、富田 英生¹、井口 哲夫¹、佐藤 淳史²、井手野 晃²、大原 利成²、西澤 典彦¹ (1.名大工、2.積水メディカル(株))

キーワード：mid-infrared, fiber laser, parametric processes

In our previous work, a wavelength tunable MIR comb driven by high power supercontinuum pulses have been reported. The scheme can generate MIR pulses with high coherence, however, the spectra were so broad that mode-power was not high as expected. In this work, a coherent Raman soliton pulse and Yb-fiber laser output were used as the seed pulses of DFG, and the 4.4-5.2 um wavelength tunable, offset-free, coherent MIR comb was generated. For confirming the coherence, the RF beat signal between the MIR comb and quantum cascade laser (QCL) was observed directly in the MIR region.