61 citations · 289 across the 18 of their papers we have counts for
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Infrared spectroscopy of radioactive hydrogen chloride HCl
Santeri Larnimaa, Markku Vainio, Ville Ulvila
We present the first report of optical absorption spectroscopy of HCl, a radioactive isotopologue of hydrogen chloride. We used Fourier-transform infrared spectroscopy to…
Cantilever-enhanced photoacoustic measurement of light-absorbing aerosols
Juho Karhu, Joel Kuula, Aki Virkkula +3
Photoacoustic detection is a sensitive method for measurement of light-absorbing particles directly in the aerosol phase. In this article, we demonstrate a new sensitive technique…
Optical power detector with broad spectral coverage, high detectivity and large dynamic range
Jussi Rossi, Juho Uotila, Sucheta Sharma +6
Optical power measurements are needed in practically all technologies based on light. Here we report a general-purpose optical power detector based on the photoacoustic effect. Opt…
Mid-infrared frequency comb with 25 pJ threshold via CW-seeded optical parametric generation in nonlinear waveguide
Mikhail Roiz, Jui-Yu Lai, Juho Karhu +1
We demonstrate efficient generation of mid-infrared frequency combs based on continuous-wave-seeded femtosecond optical parametric generation in nonlinear waveguides. Conversion of…
Electromagnetic Radiation Detection with Broad Spectral Sensitivity and Large Dynamic Range using Cantilever-based Photoacoustic Effect
Sucheta Sharma, Toni Laurila, Jussi Rossi +4
A sensitive photoacoustic detection approach employing a silicon cantilever is investigated for power measurement of electromagnetic radiation. The technique which is actuated by p…