Octave-spanning spectra and pulse synthesis by nondegenerate cascaded four-wave mixing

Silva, João L.; Weigand, Rudolf; Crespo, Helder

doi:10.1364/ol.34.002489

Cited by 22 publications

(15 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Spectrum of the multiple CFWM orders generated in fused silica spanning over 1.5 octaves (the two pump frequencies correspond to the two larger peaks). Dashed line: Experimental results (see [21]), Solid line: Numerical simulation, Dotted line: Numerical simulation for collinear pumps [22]. Figure 10.…”

Section: Knowing the Fields: The Complete Theoretical Modelmentioning

confidence: 99%

“…Experimental (measured and retrieved) and simulated polarization-gating FROG (PG-XFROG) traces of the second frequency-upshifted pulse (top row) and first downshifted pulse (bottom row). The retrieved pulse durations are 30.7 and 40.2 fs for the second upshift and first downshift respectively (FROG error was 0.014 and 0.008 for a 128ˆ128 grid) [22]. Other kinds of temporal processing are also possible.…”

Section: Knowing the Fields: The Complete Theoretical Modelmentioning

confidence: 99%

See 1 more Smart Citation

Fundamentals of Highly Non-Degenerate Cascaded Four-Wave Mixing

Weigand

Crespo

2015

Applied Sciences

Self Cite

View full text Add to dashboard Cite

By crossing two intense ultrashort laser pulses with different colors in a transparent medium, like a simple piece of glass, a fan of multicolored broadband light pulses can be simultaneously generated. These newly generated pulses are emitted in several well-defined directions and can cover a broad spectral range, from the infrared to the ultraviolet and beyond. This beautiful phenomenon, first observed and described 15 years ago, is due to highly-nondegenerate cascaded four-wave mixing (cascaded FWM, or CFWM). Here, we present a review of our work on the generation and measurement of multicolored light pulses based on third-order nonlinearities in transparent solids, from the discovery and first demonstration of highly-nondegenerate CFWM, to the coherent synthesis of single-cycle pulses by superposition of the multicolored light pulses produced by CFWM. We will also present the development and main results of a dedicated 2.5-D nonlinear propagation model, i.e., with propagation occurring along a two-dimensional plane while assuming cylindrically symmetric pump beam profiles, capable of adequately describing noncollinear FWM and CFWM processes. A new method for the generation of femtosecond pulses in the deep-ultraviolet (DUV) based on FWM and CFWM will also be described. These experimental and theoretical results show that highly-nondegenerate third-order nonlinear optical processes are formally well understood and provide broader bandwidths than other nonlinear optical processes for the generation of ultrashort light pulses with wavelengths extending from the near-infrared to the deep-ultraviolet, which have many applications in science and technology.Appl. Sci. 2015, 5 486 Keywords: nondegenerate cascaded four-wave mixing; multicolored femtosecond pulse generation; two-octave spanning spectra; few-and single-cycle coherent pulse synthesis; broadband deep-ultraviolet (DUV) and vacuum-ultraviolet (VUV) femtosecond pulses; femtosecond DUV pulse characterization

show abstract

Section: Knowing the Fields: The Complete Theoretical Modelmentioning

confidence: 99%

Section: Knowing the Fields: The Complete Theoretical Modelmentioning

confidence: 99%

Fundamentals of Highly Non-Degenerate Cascaded Four-Wave Mixing

Weigand

Crespo

2015

Applied Sciences

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, four-wave mixing (FWM) has been studied as new method for the generation of ultrashort pulses, including few-cycle pulses, with a spectral range from deep-UV (DUV) to mid-IR [49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66]. Among these results, the multicolored laser pulses that can be generated using cascaded four-wave mixing (CFWM) in transparent bulk materials are particularly attractive, due to their ultra-broadband spectral range, large wavelength tunable range and compact configurations [54][55][56][57][58][59][60][61][62][63][64][65][66].…”

Section: Introductionmentioning

confidence: 99%

“…Among these results, the multicolored laser pulses that can be generated using cascaded four-wave mixing (CFWM) in transparent bulk materials are particularly attractive, due to their ultra-broadband spectral range, large wavelength tunable range and compact configurations [54][55][56][57][58][59][60][61][62][63][64][65][66]. Multicolored laser pulses generated by CFWM were first shown in semiconductor lasers in the 1980s [67].…”

Section: Introductionmentioning

confidence: 99%

“…The pulse duration of different sidebands can be shorter than 50 fs without any extra dispersion compensation components [55][56][57]59,60], and sub-20 fs pulses can be obtained when the pump pulse chirp is carefully optimized [63]. Weigand and his co-workers also tried to recombine and synthesize all of the sidebands, and found that few-cycle visible-UV pulses were feasible [64,65]. The pulse energy of the first sideband can be higher than 1 µJ, with an energy conversion efficiency of around 10% [66].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tunable Multicolored Femtosecond Pulse Generation Using Cascaded Four-Wave Mixing in Bulk Materials

Kobayashi

2014

Applied Sciences

View full text Add to dashboard Cite

This paper introduces and discusses the main aspects of multicolored femtosecond pulse generation using cascaded four-wave mixing (CFWM) in transparent bulk materials. Theoretical analysis and semi-quantitative calculations, based on the phase-matching condition of the four-wave mixing process, explain the phenomena well. Experimental studies, based on our experiments, have shown the main characteristics of the multicolored pulses, namely, broadband spectra with wide tunability, high stability, short pulse duration and relatively high pulse energy. Two-dimensional multicolored array generation in various materials are also introduced and discussed.

show abstract