2020/01/27 by Bianca Bettina Reich, Maryam Mostamand, Reich, Bianca Bettina +5
Engineering · Chemistry · #Laser Design and Applications #Solid State Laser Technologies #Spectroscopy and Laser Applications
paper · pdf · doi:10.48550/arxiv.2001.10120
A concept for continuously tunable titanium-sapphire (Ti:Sa) lasers using\ndispersion prisms is under investigation for the ARIEL (Advanced Rare IsotopE\nLaboratory) laser ion source at TRIUMF (Canada's particle accelerator center).\nWavelength selection for pulsed Ti:Sa lasers used in hot cavity laser resonance\nionization spectroscopy is usually done with birefringent filters (BRFs) and\netalons or diffraction gratings. For resonance ionization spectroscopy a laser\nsystem allowing a continuous wavelength scan is necessary. Tunable lasers based\non BRFs and etalons have high output powers however require synchronized\noptimization for continuous laser wavelength scans and are therefore laborious\nto use in scanning applications. Diffraction grating tuned lasers can provide\ncontinuous wavelength scan over 200 nm range but typically have lower output\nlaser power due to the grating deformation under high pumping power. Aiming to\novercome both shortcomings a laser design based on prisms as dispersing element\nhas been revisited. Simulations on the beam path and optical reflectivity are\ndone which show that these losses can be minimized to around 0.04 % for a\ntuning range from 700 nm up to 920 nm. Further improvement on the tuning range\nand reduction on the linewidth will be pursued.\n