| 1. |
- Zielińska, J. A., et al.
(författare)
-
Fully-resonant, tunable, monolithic frequency conversion as a coherent UVA source
- 2017
-
Ingår i: Optics Express. - 1094-4087. ; 25:2, s. 1142-1150
-
Tidskriftsartikel (refereegranskat)abstract
- We demonstrate a monolithic frequency converter incorporating up to four tuning degrees of freedom, three temperature and one strain, allowing resonance of pump and generated wavelengths simultaneous with optimal phase-matching. With a Rb-doped periodically-poled potassium titanyl phosphate (KTP) implementation, we demonstrate efficient continuous-wave second harmonic generation from 795 to 397, with low-power efficiency of 72% and high-power slope efficiency of 4.5%. The measured performance shows good agreement with theoretical modeling of the device. We measure optical bistability effects, and show how they can be used to improve the stability of the output against pump frequency and amplitude variations.
|
|
| 2. |
- Boyko, A. A., et al.
(författare)
-
Intracavity difference-frequency mixing of OPO signal and idler pulses in BaGa4Se7
- 2017
-
Ingår i: Optics InfoBase Conference Papers. - : Optical Society of America. - 9781943580279
-
Konferensbidrag (refereegranskat)abstract
- An overall quantum conversion efficiency of 7.8% is achieved by intracavity mixing the signal and idler of a 1.064-μm pumped Rb:PPKTP OPO in BaGa4Se7, generating >0.7 mJ pulse energy at ~7 μm and 100 Hz.
|
|
| 3. |
|
|
| 4. |
- Boyko, A. A., et al.
(författare)
-
Intracavity-pumped, cascaded Mid-IR optical parametric oscillator based on AgGaSe2
- 2015
-
Ingår i: Advanced Solid State Lasers, ASSL 2015. - : Optical Society of America. - 9781943580026
-
Konferensbidrag (refereegranskat)abstract
- We report on an AgGaSe2 optical parametric oscillator (OPO), intracavity pumped by the 1.85-μm signal pulses from a 1.064-μm pumped Rb:PPKTP OPO. It operates at 100 Hz with idler tunability from 5.8 to 8.3 μm.
|
|
| 5. |
|
|
| 6. |
- Lu, D., et al.
(författare)
-
Angular quasi-phase-matching in the biaxial crystal PPRKTP
- 2018
-
Ingår i: Optics InfoBase Conference Papers. - : OSA - The Optical Society.
-
Konferensbidrag (refereegranskat)abstract
- We performed the first measurements of angular quasi-phase-matching (AQPM) of second-harmonic generation in the periodically-poled Rb-doped KTiOPO4 crystal cut as a sphere, which validates the theory of AQPM in the case of a biaxial crystal.
|
|
| 7. |
- Masiello, Fabio, et al.
(författare)
-
Investigation by coherent X-ray section topography of ferroelectric domain behaviour as a function of temperature in periodically poled Rb:KTP
- 2011
-
Ingår i: Journal of applied crystallography. - 0021-8898 .- 1600-5767. ; 44, s. 462-466
-
Tidskriftsartikel (refereegranskat)abstract
- The behaviour of ferroelectric domains at high temperatures near the Curie temperature in a periodically poled rubidium-doped potassium titanyl phosphate crystal (Rb:KTP) has been studied by Bragg-Fresnel X-ray diffraction imaging in situ using a compact coherence-preserving furnace. The development and partial disappearance of the inverted domain structure as the temperature increases has been successfully modelled, and is explained by invoking a built-in electric field produced under heating in a low vacuum by out-diffusion of atoms from the sample.
|
|
| 8. |
- Petit, Y., et al.
(författare)
-
Negative first-order quasi-phase matching
- 2020
-
Ingår i: Optics InfoBase Conference Papers. - : The Optical Society.
-
Konferensbidrag (refereegranskat)abstract
- We propose a new scheme of quasi-phase matching based on the negative first-order of the spatial modulation of the sign of the second-order optical nonlinearity. The experimental validation is done in a periodically-poled Rubidium-doped KTiOPO4 crystal.
|
|
| 9. |
- Petrov, V., et al.
(författare)
-
Frequency down-conversion of 1 μm laser radiation to the mid-IR using non-oxide nonlinear crystals in a cascaded intracavity configuration
- 2017
-
Ingår i: Proceedings of SPIE - The International Society for Optical Engineering. - : SPIE - International Society for Optical Engineering. - 9781510606173
-
Konferensbidrag (refereegranskat)abstract
- A singly-resonant OPO (SRO) based on AgGaSe2 (AGSe) intracavity pumped at ∼1.85 μm by the signal pulses of a Rb:PPKTP doubly-resonant OPO (DRO) provided extremely broad tuning (5.8 to ∼18 μm) for the non-resonated idler. In a similar set-up with the same nonlinear crystals, we studied intracavity difference-frequency generation (DFG). Both AGSe and the new monoclinic crystal BaGa4Se7 (BGSe) generated single pulse energies of ∼0.7 mJ near 7 μm at an overall conversion efficiency from the 1.064 μm pump of 1.2%. The main advantage of BGSe is its damage resistivity up to the maximum pump levels applied at 100 Hz.
|
|
| 10. |
|
|
