Optical parametric oscillator pumped at ~1 µm with intracavity mid-IR difference-frequency technology in OPGaAs
Output idler energies over the microjoule amount are attained with optimum conversion effectiveness of 11% with the amplifier stage, that is in excess of two times much better than the results attained using an analogous sample in the broadly distribute product AgGaS two .
crystals with ultrafast Yb-ion laser pump is proposed. The final results type a handy reference for the selection of elements
The thought of chemical transport reactions (volatilization of a fabric by using a small-volatile chemical intermediate at a temperature T1 and back again-reaction on the combination in a temperature T2, utilizing the temperature dependence of your chemical equilibrium associated) is really a precious Software for developing solitary crystals of many materials which can not be very easily attained within the melt.
We report new experimental outcomes about the stage-matching Houses of yellow colour HgGa2S4 crystals for harmonic era of an Nd:YAG laser-pumped KTiOPO4 (KTP) optical parametric oscillator (OPO) and CO2 lasers in the 0.944-ten.5910 μm variety. On top of that, we current new Sellmeier equations that provide a fantastic replica in the existing experimental outcomes as well as the revealed data details for 2nd-harmonic era of CO2 laser radiation at nine.
caused oscillations inside the idler wavelength of fewer than 200MHz over 300s; the brief-time period stability was below 3MHz
The temperature dependence of refractive indices of optical supplies is characterized On this operate by what we phone their normalized thermo-optic coefficients. They are identified experimentally via interferometric measurements of thermal expansion and of variations in optical thickness at a couple of laser wavelengths as perform of temperature. An appropriate vectorial formalism applied to these facts permits predicting the thermal evolution on the refractive index all around the beneficial array of transparency.
This new version has become updated and revised to includeimportant developments, concepts and technologies that haveemerged Because the publication of the first version.
Greater-order nonlinear procedures in different elements also are thought of plus a discussion on content suitability for down-conversion of in close proximity to-IR lasers in to the mid-IR to meet numerous software specifications is likewise presented.
The know-how of increasing mercury thiogallate crystals (HgGa2S4) is enhanced and large-excellent bulk samples are produced. The essential optical and thermal properties of such crystals are analyzed. The transmission spectra of mercury thiogallate are measured and its nonlinear characteristics such as the quadratic susceptibility, tuning curves, plus the optical-harm resistance may also be decided.
The technique relies on team velocity matching amongst interacting waves in addition to birefringent stage matching. We are going to explain broadband SHG properties regarding beam propagation directions, spectral positions of resonance, effective nonlinearities, spatial stroll-offs between interacting beams, and spectral bandwidths. The outcome will show the spectral bandwidths of the fundamental wave authorized for broadband SHG to achieve a number of hundreds of nm. The corresponding SH spectral array spans from 1758.fifty eight to 4737.18 nm in the non-oxide crystals regarded as On this study. These types of broadband SHG working with brief pulse trains can most likely be applied to frequency up-conversion imaging inside the mid-IR region, in facts transmission, and in nonlinear optical signal processing.
for the detection of molecular trace gasses. The oscillation threshold, output electricity and steadiness of The only resonant
In this particular paper we theoretically investigate probably the most economical pump temporal form for pulsed Procedure of website optical parametric oscillators (OPOs). The theoretical Investigation includes resolving the optimal Regulate issue utilizing the charge equation formalism. The OPO optimal buildup habits is derived for any OPO configuration, and we demonstrate that the ideal pump pulse condition is actually a double rectangle. The first rectangle is optimized to the buildup process, even though the 2nd a single is optimized for that steady condition, and both of those depend in different ways over the OPO mirror reflectivities in addition to the readily available pump Power and greatest peak power.
Tunable mid-IR radiation is acquired through next harmonic generation of tunable CO2-laser radiation using a CdGeAs2 crystal. Its angular tuning attributes within the CO2- laser wavelength, angular acceptance angle and spectral acceptance are calculated.