White-light supercontinuum generation with 60-ps pump pulses in a photonic crystal fiber

Abstract

The generation of a spatially single-mode white-light supercontinuum has been observed in a photonic crystal fiber pumped with 60-ps pulses of subkilowatt peak power. The spectral broadening is identified as being due to the combined action of stimulated Raman scattering and parametric four-wave-mixing generation, with a negligible contribution from the self-phase modulation of the pump pulses. The experimental results are in good agreement with detailed numerical simulations. These findings demonstrate that ultrafast femtosecond pulses are not needed for efficient supercontinuum generation in photonic crystal fibers.

Nonlinear optics of microstructure fibers

“…®³-ÄÑÎÑÍРàÕÑÅÑ ÕËÒ ÒÑÊÄÑÎâáÕ AEÑÔÕËÚß ÓÂAEËÍÂÎßÐÑÅÑ ÖÄÇÎËÚÇÐËâ à××ÇÍÕËÄÐÑÔÕË ÙÇÎÑÅÑ ÍÎÂÔÔ ÐÇÎËÐÇÌÐÑ-ÑÒÕËÚÇÔÍËØ ÄÊÂËÏÑAEÇÌÔÕÄËÌ [5], ÄÍÎáÚÂâ ×ÂÊÑÄÖá ÔÂÏÑ-Ë ÍÓÑÔÔ-ÏÑAEÖÎâÙËá [15,16], ÚÇÕÞÓÇØÄÑÎ-ÐÑÄÞÇ ÄÊÂËÏÑAEÇÌÔÕÄËâ [17 ë 21], ÅÇÐÇÓÂÙËá ÕÓÇÕßÇÌ ÅÂÓ-ÏÑÐËÍË [16,22] Ë ÄÞÐÖÉAEÇÐÐÑÇ ÍÑÏÃËÐÂÙËÑÐÐÑÇ ÓÂÔÔÇâ-ÐËÇ ÔÄÇÕ [17].…”

“…µÄÇÎËÚÇÐËÇ à××ÇÍÕËÄÐÑÔÕË ÙÇÎÑÅÑ ÐÂÃÑÓ ÐÇÎË-ÐÇÌÐÑ-ÑÒÕËÚÇÔÍËØ ÒÓÑÙÇÔÔÑÄ, ÄÍÎáÚÂâ ×ÂÊÑÄÖá ÔÂÏÑ-ÏÑAEÖÎâÙËá [15], ÚÇÕÞÓÇØÄÑÎÐÑÄÞÇ Ë ÒÂÓÂÏÇÕÓËÚÇÔÍËÇ ÄÊÂËÏÑAEÇÌÔÕÄËâ [17 ë 20], ÅÇÐÇÓÂÙËá ÕÓÇÕßÇÌ ÅÂÓÏÑÐËÍË [16,22], ÄÞÐÖÉAEÇÐÐÑÇ ÍÑÏÃËÐÂÙËÑÐÐÑÇ ÓÂÔÔÇâÐËÇ (£¬²) [17,18], ×ÑÓÏËÓÑÄÂÐËÇ ÔÑÎËÕÑÐÑÄ [25], ÒÓËÄÑAEËÕ Í à××ÇÍÕËÄÐÑÌ ÅÇÐÇÓÂÙËË ËÊÎÖÚÇÐËâ Ô ÛËÓÑÍËÏ ÐÇÒÓÇÓÞÄ-ÐÞÏ ÔÒÇÍÕÓÑÏ ì ÔÖÒÇÓÍÑÐÕËÐÖÖÏ [23,24]. ¤ÇÐÇÓÂÙËâ ÔÖÒÇÓÍÑÐÕËÐÖÖÏÂ Ä ®³-ÄÑÎÑÍÐÂØ âÄÎâÇÕÔâ ÍÎáÚÇÄÞÏ ÊÄÇÐÑÏ ×ÇÏÕÑÔÇÍÖÐAEÐÞØ ÔËÔÕÇÏ AEÎâ ÄÞÔÑÍÑÕÑÚÐÞØ ËÊÏÇ-ÓÇÐËÌ [27 ë 31],  ÕÂÍÉÇ ÒÇÓÔÒÇÍÕËÄÐÞÏ ÏÇÕÑAEÑÏ ËÊÏÇÓÇ-ÐËâ Ë ÖÒÓÂÄÎÇÐËâ ×ÂÊÑÌ ÔÄÇÓØÍÑÓÑÕÍËØ ËÏÒÖÎßÔÑÄ [35].…”

“…±ÑAEÔÕÂÄÎââ ÑÒÕËÏÂÎßÐÑÇ ÊÐÂÚÇÐËÇ AEÎËÐÞ ÄÑÎÐÑÄÑAEÂ Ä ÄÞÓÂÉÇÐËÇ (17), ÐÂØÑAEËÏ ÏÂÍÔËÏÂÎßÐÑÇ ÊÐÂÚÇÐËÇ ËÐÕÇ-ÅÓÂÎßÐÑÅÑ ÍÑà××ËÙËÇÐÕ £¬²-ÖÔËÎÇÐËâ Ä ÒÑÎÑÏ ÄÑÎÐÑ-ÄÑAEÇ: (17) …”

Coherent Anti-Stokes Raman Scattering Microscopy by Dispersive Wave Generations in a Polarization Maintaining Photonic Crystal Fiber

“…Over the last few years, the CARS microscopy with PCFs has been developed to simplify the system and reduce the costs. Up to now, some frequency conversion techniques based on the supercontinuum [18][19][20][21][22][23] or the non-supercontinuum [24][25][26][27][28][29][30] have been used to generate the pump and Stokes beams. The selective spectral filtering of supercontinuum can obtain the desired wavelengths, but the temporal width can be elongated as well as the decreased spectral energy, and the noise amplification is remarkable due to the complex nonlinear optical process.…”

Nonlinear propagation of a-few-optical-cycle pulses in a photonic crystal fiber-experimental and theoretical studies beyond the slowly varying-envelope approximation

“…HOTONIC crystal fibers (PCFs) have attracted significant research attention in recent years for their zero-dispersion wavelength (ZDW) shifted into the visible range and hence efficient supercontinuum (SC) generation [1], [2]. However, the mechanism in SC generation is not yet well understood due to the complicated interactions among many nonlinear optical processes such as self-phase modulation (SPM), stimulated Raman scattering (SRS), parametric four-wave mixing (FWM), soliton formation, and self-steepening (SST), as well as the unusual dispersion profile.…”