High-power, continuous-wave, solid-state, single-frequency, tunable source for the ultraviolet

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dc.contributor.author Aadhi, A.
dc.contributor.author Apurv Chaitanya, N.
dc.contributor.author Singh, Ravindra P.
dc.contributor.author Samanta, Goutam Kumar
dc.date.accessioned 2014-08-22T16:52:21Z
dc.date.available 2014-08-22T16:52:21Z
dc.date.issued 2014-06
dc.identifier.citation Aadhi, A; Chaitanya, N. Apurv; Singh, Ravindra P. and Samanta, Goutam K., “High-power, continuous-wave, solid-state, single-frequency, tunable source for the ultraviolet”, Optics Letters, DOI: 10.1364/OL.39.003410, vol. 39, no. 12, pp. 3410-3413, Jun. 2014 en_US
dc.identifier.issn 0146-9592
dc.identifier.uri http://dx.doi.org/10.1364/OL.39.003410
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1374
dc.description.abstract We report the development of a compact, high-power, continuous-wave, single-frequency, ultraviolet (UV) source with extended wavelength tunability. The device is based on single-pass, intracavity, second-harmonic-generation (SHG) of the signal radiation of a singly resonant optical parametric oscillator (SRO) working in the visible and near-IR wavelength range. The SRO is pumped in the green with a 25-mm-long, multigrating, MgO doped periodically poled stoichiometric lithium tantalate (MgO:sPPLT) as nonlinear crystal. Using three grating periods, 8.5, 9.0, and 9.5 μm of the MgO:sPPLT crystal and a single set of cavity mirrors, the SRO can be tuned continuously across 710.7–836.3 nm in the signal and corresponding idler across 2115.8–1462.1 nm with maximum idler power of 1.9 W and maximum out-coupled signal power of 254 mW. By frequency-doubling the intracavity signal with a 5-mm-long bismuth borate (BIBO) crystal, we can further tune the SRO continuously over 62.8 nm across 355.4–418.2 nm in the UV with maximum single-frequency UV power, as much as 770 mW at 398.28 nm in a Gaussian beam profile. The UV radiation has an instantaneous line-width of ∼14.5  MHz and peak-peak frequency stability of 151 MHz over 100 s. More than 95% of the tuning range provides UV power >260  mW. Access to lower UV wavelengths can in principle be realized by operating the SRO in the visible using shorter grating periods. en_US
dc.description.statementofresponsibility by A Aadhi and N. Apurv Chaitanya
dc.format.extent vol. 39, no. 12, pp. 3410-3413
dc.language.iso en en_US
dc.publisher Optical Society of America en_US
dc.subject Frequency-doubling en_US
dc.subject Gaussian beam profile en_US
dc.subject Nonlinear crystals en_US
dc.subject Periodically poled en_US
dc.subject Signal radiation en_US
dc.subject Singly-resonant optical parametric oscillators en_US
dc.subject Singly-resonant optical parametric oscillators en_US
dc.subject Wavelength tunability en_US
dc.title High-power, continuous-wave, solid-state, single-frequency, tunable source for the ultraviolet en_US
dc.type Article en_US
dc.relation.journal Optics Letters


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