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INDUSTRY NEWS
3 Difference frequency generation of high-power mid-infrared ultrafast light sources 3.2 Difference frequency generation for producing high-power mid-infrared ultrashort pulses at 3μm The time delay line was adjusted to synchronize the pump pulse and signal pulse in time, and the variation of mid-
2025/10/15 15:43
3 Difference frequency generation of high-power mid-infrared ultrafast light sources 3.2 Difference frequency generation for producing high-power mid-infrared ultrashort pulses at 3μm We built a DFG (Difference Frequency Generation) system based on a high-power dual-wavelength ultrafast fiber laser
2025/10/02 11:51
3 Difference frequency generation of high-power mid-infrared ultrafast light sources 3.1 High-power tunable dual-wavelength ultrafast fiber laser The other pulse train serves as the seed for the erbium-doped CPA system. After fiber broadening, two-stage single-mode fiber amplification, one-stage
2025/09/25 13:29
3 Difference frequency generation of high-power mid-infrared ultrafast light sources3.1 High-power tunable dual-wavelength ultrafast fiber laser Fig.4. High power tunable dual-wavelength (1.55μm/1μm) ultrafine fiber laser experimental device diagram Based on the difference frequency generation
2025/09/07 16:09
2 Mid-infrared theory and simulation based on PPLN crystal (www.wisoptic.com) difference frequency generation The above analysis demonstrates that pump and signal beam energies significantly influence idler energy generation during DFG. The magnitude and relationship between these two energies
2025/08/12 09:29
2 Mid-infrared theory and simulation based on PPLN crystal difference frequency generationThe process of ultrashort pulses generating mid-infrared in the PPLN crystal (www.wisoptic.com) is described by the three-wave coupling equation:Ai (z,τ) represents the complex amplitude of the i-th pulse, i
2025/07/29 18:10
1 IntroductionDFG technology uses a near-infrared light source as a pump pulse, and realizes wavelength conversion through nonlinear effects to generate signal pulses. In the nonlinear crystal, the pump pulse and the signal pulse convert energy to the mid-infrared band through the three-wave mixing
2025/07/20 18:35
1 IntroductionMid-infrared ultrashort pulse lasers with a wavelength of 2-5 μm have irreplaceable application value in basic research and industrial applications due to their unique band position. In the field of molecular detection, 2-5 μm lasers can resonate with molecules such as CO and N2O,
2025/05/30 14:14
2 Results and DiscussionThe absorption cross section is an important parameter for optical pumping of laser crystals. The calculation formula is: σabs = α(λ)/N, where N is the concentration of Nd3+ in the crystal (the number of ions per unit volume), which is 1.78×1020 cm-3, and α(λ) is the
2025/05/22 17:29
2 Results and DiscussionIn order to obtain more crystal structure information, the Rietveld method was used to refine the structure of Nd:YLF (www.wisoptic.com) crystal powder sample. The structural data of YLF crystal was used as the initial data for refinement. Nd3+ and Y3+ are in the same
2025/04/28 11:08
2 Results and DiscussionFigure 4 is the XRD spectrum of the polycrystalline material prepared by the melting method. Its diffraction peak position and relative intensity are basically consistent with the YLF standard card (PDF#00-017-0874), and the agreement is good, indicating that the
2025/04/14 17:15
1 Experiment Method1.1 Raw material preparationYF3, LiF and NdF3 with a purity of 99.999% were used as initial raw materials. They were accurately weighed in a vacuum glove box at a ratio of n(LiF):n(YF3):n(NdF3)=51:48:2, loaded into a raw material bottle and mixed thoroughly. Then, the raw
2025/04/08 16:37