kth.sePublications
Change search
Link to record
Permanent link

Direct link
Alternative names
Publications (10 of 272) Show all publications
Mutter, P., Mølster, K. M., Zukauskas, A., Pasiskevicius, V. & Canalias, C. (2023). Efficient first-order quasi-phase-matched backward second-harmonic generation. Optics Letters, 48(6), 1534-1537
Open this publication in new window or tab >>Efficient first-order quasi-phase-matched backward second-harmonic generation
Show others...
2023 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 48, no 6, p. 1534-1537Article in journal (Refereed) Published
Abstract [en]

We demonstrate first-order quasi-phase-matched backward second-harmonic generation (BSHG) with an efficiency of 18.7%. This represents an increase by two orders of mag-nitude from earlier experiments employing higher-order quasi-phase-matching. The efficient BSHG is demonstrated in bulk periodically poled Rb:KTiOPO4 with a poling period of 317 nm. Using these structures, the frequency doubling in the backward direction is achieved for the fundamental wavelength of 2309 nm. Here we report on the experimental investigation of the BSHG properties such as spectral band-width, temperature tuning, and temperature bandwidth by employing broadband and narrowband fundamental wave-length sources. The BSHG properties are compared with those of co-propagating second harmonic generation to reveal the BSHG potential for novel applications that were proposed theoretically but have not been realized in practice so far.

Place, publisher, year, edition, pages
Optica Publishing Group, 2023
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-326062 (URN)10.1364/OL.481694 (DOI)000959798500011 ()36946971 (PubMedID)2-s2.0-85150455436 (Scopus ID)
Note

QC 20230425

Available from: 2023-04-25 Created: 2023-04-25 Last updated: 2023-05-05Bibliographically approved
Kuo, P. S., Reddy, D. V., Verma, V., Nam, S. W., Zukauskas, A. & Canalias, C. (2023). Frequency Translation Using Backward-Wave Spontaneous Parametric Downconversion. In: 2023 Conference on Lasers and Electro-Optics, CLEO 2023: . Paper presented at 2023 Conference on Lasers and Electro-Optics, CLEO 2023, San Jose, United States of America, May 7 2023 - May 12 2023. Institute of Electrical and Electronics Engineers Inc., Article ID SW4G.5.
Open this publication in new window or tab >>Frequency Translation Using Backward-Wave Spontaneous Parametric Downconversion
Show others...
2023 (English)In: 2023 Conference on Lasers and Electro-Optics, CLEO 2023, Institute of Electrical and Electronics Engineers Inc. , 2023, article id SW4G.5Conference paper, Published paper (Refereed)
Abstract [en]

We experimentally investigate using backward-wave spontaneous parametric downconversion for frequency translation, where spectral characteristics of the pump wave are transferred to the signal wave.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2023
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-339980 (URN)2-s2.0-85176293847 (Scopus ID)
Conference
2023 Conference on Lasers and Electro-Optics, CLEO 2023, San Jose, United States of America, May 7 2023 - May 12 2023
Note

Part of ISBN 9781957171258

QC 20231124

Available from: 2023-11-24 Created: 2023-11-24 Last updated: 2023-11-24Bibliographically approved
Lee, C., Zukauskas, A. & Canalias, C. (2023). Large-aperture periodically poled Rb-doped KTP with a short-period via coercive field engineering. Optical Materials Express, 13(8), 2203-2213
Open this publication in new window or tab >>Large-aperture periodically poled Rb-doped KTP with a short-period via coercive field engineering
2023 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 13, no 8, p. 2203-2213Article in journal (Refereed) Published
Abstract [en]

We demonstrate periodic poling of large aperture Rb-doped KTP (RKTP) crystals with a QPM period of 3.43 µm via coercive field engineering. The periodically-poled RKTP has excellent pattern-fidelity, with a second harmonic generation (SHG) conversion efficiency of 1.4%/Wcm at 405 nm. We use ion-exchange (IE) to fabricate grating of high-and-low coercive fields and establish that the depth of the in-diffused Rb+ is the main parameter to achieve sufficiently large coercive field contrast that enables uniform periodic poling in the thick crystal. Furthermore, we demonstrate that our robust coercive field grating allows multiple cycles of polarization-switching which can be employed to decrease the refractive-index change along the polar axis, induced during the IE process. 

Place, publisher, year, edition, pages
Optica Publishing Group, 2023
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-335352 (URN)10.1364/OME.491950 (DOI)001051172500001 ()2-s2.0-85166236459 (Scopus ID)
Note

QC 20230907

Available from: 2023-09-07 Created: 2023-09-07 Last updated: 2023-09-11Bibliographically approved
Barrett, L., Zukauskas, A., Laurell, F. & Canalias, C. (2023). Novel Coercive Field Engineering Method for Short Period KTiOPO4. In: 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023: . Paper presented at 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Munich, Germany, Jun 26 2023 - Jun 30 2023. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Novel Coercive Field Engineering Method for Short Period KTiOPO4
2023 (English)In: 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Institute of Electrical and Electronics Engineers (IEEE) , 2023Conference paper, Published paper (Refereed)
Abstract [en]

The development of reliable periodic poling methods that allow for sub-µm quasi-phase matched (QPM) gratings and, at the same time, allow for waveguide implementation, is of paramount importance for a large number of applications. For instance, backward-wave optical parametric oscillators [1] are only viable if the QPM period is on the same order of magnitude as the wavelengths of the interacting waves. Furthermore, the integration of such QPM devices in a waveguide format would unveil countless possibilities in quantum optics employing the crystal as an ultrabright bi-photon source with unique spectral characteristics.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2023
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-339730 (URN)10.1109/CLEO/EUROPE-EQEC57999.2023.10231883 (DOI)2-s2.0-85175713101 (Scopus ID)
Conference
2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Munich, Germany, Jun 26 2023 - Jun 30 2023
Note

Part of ISBN 9798350345995

QC 20231116

Available from: 2023-11-16 Created: 2023-11-16 Last updated: 2023-11-16Bibliographically approved
Mutter, P., Zukauskas, A., Viotti, A.-L., Canalias, C. & Pasiskevicius, V. (2023). Phase-locked degenerate backward wave optical parametric oscillator. APL PHOTONICS, 8(2), 026104, Article ID 026104.
Open this publication in new window or tab >>Phase-locked degenerate backward wave optical parametric oscillator
Show others...
2023 (English)In: APL PHOTONICS, ISSN 2378-0967, Vol. 8, no 2, p. 026104-, article id 026104Article in journal (Refereed) Published
Abstract [en]

We report a self-phase-locked and degenerate backward wave optical parametric oscillator (BWOPO) generating a counterpropagating signal and an idler in the spectral band of optical communication. The device is based on a periodically poled Rb-doped KTiOPO4 crystal with a poling period of 433 nm. To the best of our knowledge, this is the shortest quasi-phase matching period reported in the bulk of a ferroelectric crystal. The spectral and coherence properties of the BWOPO at degeneracy are investigated. We observe a single pass conversion efficiency of 40%. At degeneracy, the counterpropagating signal and idler generate phase-matched sum-frequency generation in both directions. We confirm the phase-locked state at degeneracy by interfering the pump with the frequency-doubled backward wave. The phase-locked state is stable during the entire duration of the experiment without active stabilization.

Place, publisher, year, edition, pages
AIP Publishing, 2023
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-324796 (URN)10.1063/5.0135589 (DOI)000935972200001 ()2-s2.0-85148687703 (Scopus ID)
Note

QC 20230316

Available from: 2023-03-16 Created: 2023-03-16 Last updated: 2023-03-16Bibliographically approved
Mutter, P., Zukauskas, A., Viotti, A.-L., Canalias, C. & Pasiskevicius, V. (2023). Phase-locked degenerate backward wave optical parametric oscillator (vol 8 , 026104, 2023). APL PHOTONICS, 8(5), Article ID 059901.
Open this publication in new window or tab >>Phase-locked degenerate backward wave optical parametric oscillator (vol 8 , 026104, 2023)
Show others...
2023 (English)In: APL PHOTONICS, ISSN 2378-0967, Vol. 8, no 5, article id 059901Article in journal (Refereed) Published
Place, publisher, year, edition, pages
AIP Publishing, 2023
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-327426 (URN)10.1063/5.0153707 (DOI)000981438100004 ()
Note

QC 20230530

Available from: 2023-05-30 Created: 2023-05-30 Last updated: 2023-05-30Bibliographically approved
Mølster, K. M., Guionie, M., Mutter, P., Dherbecourt, J. B., Melkonian, J. M., Delen, X., . . . Pasiskevicius, V. (2023). Pump Tunable Mirrorless OPO: an Innovative Concept for Future Space IPDA Emitters. In: International Conference on Space Optics, ICSO 2022: . Paper presented at 2022 International Conference on Space Optics, ICSO 2022, Dubrovnik, Croatia, Oct 3 2022 - Oct 7 2022. SPIE-Intl Soc Optical Eng, Article ID 127772V.
Open this publication in new window or tab >>Pump Tunable Mirrorless OPO: an Innovative Concept for Future Space IPDA Emitters
Show others...
2023 (English)In: International Conference on Space Optics, ICSO 2022, SPIE-Intl Soc Optical Eng , 2023, article id 127772VConference paper, Published paper (Refereed)
Abstract [en]

A highly efficient mirrorless OPO tunable in the mid-infrared around 2 μm has been developed and characterized in an original pumping configuration comprising a tunable high power hybrid Ytterbium laser MOPA (Master Oscillator Power Amplifier) in the nanosecond regime. The hybrid pump laser is based on a fiber laser seeder continuously tunable over several GHz at 1030 nm, which is shaped in the time domain with acousto-optic modulators (AOM), and power amplified in a dual stage Ytterbium doped fiber amplifiers, followed by two Yb:YAG bulk amplifiers. The pump delivers up to 3.5 mJ of energy within narrowband 15 ns pulses with a 5 kHz repetition rate. The output was focused into Periodically Poled KTP (PPKTP) crystals with a quasi-Phase Matching (QPM) period of 580 nm, producing Backward Optical Parametric Oscillation (BWOPO), with a forward signal wave at 1981 nm and a backward traveling idler at 2145 nm. We report significant optical to optical efficiencies exceeding 70 % depending on crystal length and input power. As theoretically expected, the forward wave could be continuously tuned over 10 GHz following the pump frequency sweep, while the backward wave remains almost stable, both being free from mode hops. These properties obtained from an optical arrangement without free-space cavities are attractive for future space Integrated Path Differential Absorption (IPDA) Lidar applications, which require robust and efficient tunable frequency converters in the mid-infrared.

Place, publisher, year, edition, pages
SPIE-Intl Soc Optical Eng, 2023
Keywords
Backward Optical Parametric Oscillator (BWOPO), Hybrid laser, Integrated Path Differential Absorption Lidar (IPDA), Master Oscillator Power Amplifier (MOPA), single frequency infrared laser sources
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-338988 (URN)10.1117/12.2690306 (DOI)2-s2.0-85174045936 (Scopus ID)
Conference
2022 International Conference on Space Optics, ICSO 2022, Dubrovnik, Croatia, Oct 3 2022 - Oct 7 2022
Note

Part of ISBN 9781510668034

QC 20231101

Available from: 2023-11-01 Created: 2023-11-01 Last updated: 2023-11-01Bibliographically approved
Mutter, P., Zukauskas, A. & Canalias, C. (2022). Domain dynamics in coercive-field engineered sub-µm periodically poled Rb-doped KTiOPO4. Optical Materials Express, 12(11), 4332-4332
Open this publication in new window or tab >>Domain dynamics in coercive-field engineered sub-µm periodically poled Rb-doped KTiOPO4
2022 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 12, no 11, p. 4332-4332Article in journal (Refereed) Published
Abstract [en]

Nonlinear optical interactions involving counter-propagating photons are of great interest for both classical and quantum optical applications. However, their use is sparsely spread due to the fact that they require quasi-phase-matched devices with sub-µm periods. A recent breakthrough has been the fabrication of bulk sub-µm domain gratings in Rb-doped KTiOPO4 by creating a grating of low- and high- coercive field regions in the crystal via periodic ion exchange, so-called coercive-field engineering. Here, we investigate the physical mechanisms behind this method and study the interplay between the ion-exchanged grating properties and the ferroelectric domain dynamics. Furthermore, we investigate the scalability of the method by studying the domain morphology of sub-µm periodically poled crystals with periods ranging from 755 to 433 nm and correlating it to that of the ion-exchanged regions. We show that the formation of sub-µm domain gratings is governed by the depth, shape, and critical ion-concentration of the ion-exchanged volume and that it is independent of the poling period. These findings are crucial for further scaling the coercive field engineering technique to even shorter poling periods and larger aperture periodically poled crystals.

Place, publisher, year, edition, pages
Optica Publishing Group, 2022
National Category
Atom and Molecular Physics and Optics Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-321518 (URN)10.1364/ome.467806 (DOI)000886589300016 ()2-s2.0-85142133271 (Scopus ID)
Funder
Carl Tryggers foundation Swedish Research Council, 2021-04912
Note

QC 20221124

Available from: 2022-11-17 Created: 2022-11-17 Last updated: 2022-12-15Bibliographically approved
Bowers, M. S., Canalias, C., Mirov, S., Nilsson, J., Saraceno, C. J. & Schunemann, P. G. (2022). Feature issue introduction: advanced solid-state lasers. Optical Materials Express, 12(6), 2283-2287
Open this publication in new window or tab >>Feature issue introduction: advanced solid-state lasers
Show others...
2022 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 12, no 6, p. 2283-2287Article in journal (Refereed) Published
Abstract [en]

This Joint Issue of Optics Express and Optical Materials Express features 36 state of-the art articles written by authors who participated in the international conference Advanced Solid State Lasers held online from October 3-7, 2021. This review provides a summary of these articles covering a wide spectrum of topics around solid-state lasers from materials research to sources and from design innovation to applications.

Place, publisher, year, edition, pages
Optica Publishing Group, 2022
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-314892 (URN)10.1364/OME.464524 (DOI)000809793000003 ()2-s2.0-85130913239 (Scopus ID)
Note

QC 20220627

Available from: 2022-06-27 Created: 2022-06-27 Last updated: 2023-06-08Bibliographically approved
Bowers, M. S., Canalias, C., Mirov, S., Nilsson, J., Saraceno, C. J. & Schunemann, P. G. (2022). Feature issue introduction: advanced solid-state lasers. Optics Express, 30(12), 20762-20766
Open this publication in new window or tab >>Feature issue introduction: advanced solid-state lasers
Show others...
2022 (English)In: Optics Express, E-ISSN 1094-4087, Vol. 30, no 12, p. 20762-20766Article in journal (Refereed) Published
Abstract [en]

This joint issue of Optics Express and Optical Materials Express features 36 state-of-the art articles written by authors who participated in the international conference advanced solid state lasers held online from October 3-7, 2021. This review provides a summary of these articles covering a wide spectrum of topics around solid-state lasers from materials research to sources and from design innovation to applications.

Place, publisher, year, edition, pages
Optica Publishing Group, 2022
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-315352 (URN)10.1364/OE.464517 (DOI)000810533400048 ()36224813 (PubMedID)2-s2.0-85130801212 (Scopus ID)
Note

Not duplicate with DiVA 1676744

QC 20220704

Available from: 2022-07-04 Created: 2022-07-04 Last updated: 2023-06-08Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-2070-9167

Search in DiVA

Show all publications