LIGHT CONVERSION HE-TOPAS-PRIME系列參數放大維持設備

HE-TOPAS-Prime maintains all the best features of “TOPAS” parametric amplifiers. Additionally, input pump energy is accepted up to 60 mJ (or even more for custom solutions). Unmatched dispersion free amplification in the second crystal stage is added to standard TOPAS-Prime (TOPAS) section in order to accept highest possible pump power (12 mJ 25 fs or 60 mJ 100 fs pulses can efficiently pump HE-TOPAS-Prime). Two models of HE-TOPAS are available: three amplification stages FS and UFS model to be pumped by 20-200fs pulses (HE-TOPAS-Prime) and five stages PS model pumped by picosecond laser pulses (HE-TOPAS-800). Femtosecond version consists of TOPAS-Prime surrounded by an additional power amplification stage while the heart of picosecond version is TOPAS-800 - superfluorescence seeded OPA. In both models pump is delivered to the second crystal by low dispersion mirrors. Absence of optics and short crystal used for amplification helps to keep shortest possible pulses at the output of HE-TOPAS. Final reduction of beam diameter (and increase of pump intensity) is performed just before the final amplification stage. FEATURE Travelling wave three/five amplification stages configuration Energy conversion into the parametric radiation ~30-35% Angular tuning limited by crystal transparency range only Upgradability for pump energy, wavelength and pulse width extension Input Wavelength: 770-830 nm Repetition rate: <20 kHz Maximum power: 40W Beam divergence: M2<1.2