{"id":5611,"date":"2025-02-13T11:30:17","date_gmt":"2025-02-13T10:30:17","guid":{"rendered":"https:\/\/phy.uniri.hr\/?page_id=5611"},"modified":"2026-03-16T23:00:08","modified_gmt":"2026-03-16T22:00:08","slug":"laboratory-for-quantum-and-nonlinear-optics","status":"publish","type":"page","link":"https:\/\/phy.uniri.hr\/en\/about-the-faculty\/organisation\/division-of-experimental-and-applied-physics\/laboratory-for-quantum-and-nonlinear-optics\/","title":{"rendered":"Laboratory for Quantum and Nonlinear Optics"},"content":{"rendered":"\n<p>Joint Laboratory of Faculty of Physics and <a href=\"http:\/\/www.cmnzt.uniri.hr\/hr\/\">Center for Micro- and Nanosciences and Technologies (NANORI)<\/a>, University of Rijeka.<\/p>\n\n\n\n<p><strong>Room: <\/strong>O-S24<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Head of Laboratory<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/portal.uniri.hr\/portfelj\/1997\">Prof. Marin Karuza&nbsp;<\/a>\n<ul class=\"wp-block-list\">\n<li>E-mail: <a href=\"mailto:mkaruza@uniri.hr\">mkaruza@uniri.hr<\/a><\/li>\n\n\n\n<li>Office: O-011<\/li>\n\n\n\n<li>Tel: +385 51 584&nbsp;611<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Acting Head of Laboratory<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/portal.uniri.hr\/Portfelj\/Details\/2206\">Assist. Prof. Nenad Kralj,&nbsp;PhD<\/a>\n<ul class=\"wp-block-list\">\n<li>E-mail: <a href=\"mailto:nkralj@uniri.hr\">nkralj@uniri.hr<\/a><\/li>\n\n\n\n<li>Office: O-012<\/li>\n\n\n\n<li>Tel: +385 51 584&nbsp;617<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-ub-content-toggle wp-block-ub-content-toggle-block\" id=\"ub-content-toggle-block-361894a9-5913-42f5-a79c-9f0ab55539cc\" data-mobilecollapse=\"false\" data-desktopcollapse=\"true\" data-preventcollapse=\"false\" data-showonlyone=\"false\">\n<div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1;\" id=\"ub-content-toggle-panel-block-\">\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-0-361894a9-5913-42f5-a79c-9f0ab55539cc\" tabindex=\"0\">\n\t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-361894a9-5913-42f5-a79c-9f0ab55539cc\" style=\"color: #000000; \">Collaborators<\/p>\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div>\n\t\t<\/div>\n\t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-0-361894a9-5913-42f5-a79c-9f0ab55539cc\">\n\n<p><strong>Doctoral Students<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vedran Vujnovi\u0107\u00a0<\/li>\n\n\n\n<li><a href=\"https:\/\/portfelj.uniri.hr\/Portfelj\/Details\/3969\">Karlo Veli\u010dan<\/a><\/li>\n\n\n\n<li>Aldo Arena\u00a0<\/li>\n\n\n\n<li>Emma Hess<\/li>\n<\/ul>\n\n<\/div>\n\t\t<\/div>\n\n<div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1;\" id=\"ub-content-toggle-panel-block-\">\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-1-361894a9-5913-42f5-a79c-9f0ab55539cc\" tabindex=\"0\">\n\t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-361894a9-5913-42f5-a79c-9f0ab55539cc\" style=\"color: #000000; \">Research<\/p>\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div>\n\t\t<\/div>\n\t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-1-361894a9-5913-42f5-a79c-9f0ab55539cc\">\n\n<p>Research conducted in the laboratory primarily focuses on fundamental problems in physics and seeks answers to questions about the composition of the Universe, such as the nature of dark matter and dark energy. To this end, we develop innovative sensors and techniques in interferometry and optical resonators.<\/p>\n\n\n\n<p>Laboratory members are currently involved in several international projects, including g\u20112 (Fermilab), which aims to measure the anomalous magnetic moment of the muon precisely, and MUonE (CERN). The CAST experiment (CERN), which monitored the Sun in search of undetected particles, was recently completed.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image5.png\"><img fetchpriority=\"high\" decoding=\"async\" width=\"518\" height=\"555\" src=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image5.png\" alt=\"\" class=\"wp-image-3860\" style=\"width:auto;height:400px\" srcset=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image5.png 518w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image5-280x300.png 280w\" sizes=\"(max-width: 518px) 100vw, 518px\" \/><\/a><\/figure>\n\n<\/div>\n\t\t<\/div>\n\n<div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1;\" id=\"ub-content-toggle-panel-block-\">\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-2-361894a9-5913-42f5-a79c-9f0ab55539cc\" tabindex=\"0\">\n\t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-361894a9-5913-42f5-a79c-9f0ab55539cc\" style=\"color: #000000; \">Student Papers<\/p>\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div>\n\t\t<\/div>\n\t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-2-361894a9-5913-42f5-a79c-9f0ab55539cc\">\n\n<p>You can find student papers at the following <a href=\"https:\/\/dabar.srce.hr\/islandora\/search\/*%3A*?f%5B0%5D=mods_Thesis_Advisor_ms%3A%22Karuza%2C%20Marin%22&amp;islandora_solr_search_navigation=0&amp;sort=dabar_sort_date_s%20desc\">link<\/a>.<\/p>\n\n<\/div>\n\t\t<\/div>\n\n<div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1;\" id=\"ub-content-toggle-panel-block-\">\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-3-361894a9-5913-42f5-a79c-9f0ab55539cc\" tabindex=\"0\">\n\t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-361894a9-5913-42f5-a79c-9f0ab55539cc\" style=\"color: #000000; \">Laboratory Publications<\/p>\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div>\n\t\t<\/div>\n\t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-3-361894a9-5913-42f5-a79c-9f0ab55539cc\">\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image1.png\"><img decoding=\"async\" width=\"540\" height=\"375\" src=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image1.png\" alt=\"\" class=\"wp-image-3861\" srcset=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image1.png 540w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image1-300x208.png 300w\" sizes=\"(max-width: 540px) 100vw, 540px\" \/><\/a><\/figure>\n\n<\/div>\n\t\t<\/div>\n\n<div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1;\" id=\"ub-content-toggle-panel-block-\">\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-4-361894a9-5913-42f5-a79c-9f0ab55539cc\" tabindex=\"0\">\n\t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-361894a9-5913-42f5-a79c-9f0ab55539cc\" style=\"color: #000000; \">Capital Equipment<\/p>\n\t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div>\n\t\t<\/div>\n\t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-4-361894a9-5913-42f5-a79c-9f0ab55539cc\">\n\n<p>Data acquisition (DAQ) is a process in which a computer measures an electrical or physical phenomenon such as voltage, current, pressure, or sound. A DAQ system comprises sensors, DAQ measurement hardware, and a computer with suitable software. Compared to traditional measurement systems, PC-based DAQ provides faster processing, higher productivity, improved visualisation, and better connectivity options, offering a more powerful, flexible, and cost-effective measurement solution.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image2.png\"><img decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image2-1024x768.png\" alt=\"\" class=\"wp-image-3862\" style=\"width:auto;height:400px\" srcset=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image2-1024x768.png 1024w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image2-300x225.png 300w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image2-768x576.png 768w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image2-1536x1153.png 1536w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image2.png 1999w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>3U PXI Express, Compact PCI Express, and Hybrid Modules<\/li>\n\n\n\n<li>Five peripheral expansion slots in a compact chassis with automatic voltage and frequency selection<\/li>\n\n\n\n<li>Integrated MXI-Express controller<\/li>\n\n\n\n<li>Rise time: 1.4 ns; bandwidth: 250 MHz; ENOB up to 7.6<\/li>\n\n\n\n<li>Real-time sampling up to 2.5 \u00d7 10\u2076 samples\/s; RIS up to 50 \u00d7 10\u2076 samples\/s<\/li>\n\n\n\n<li>Jitter &lt; 200 fs; amplitude resolution &lt; 0.1 dB<\/li>\n\n\n\n<li>Amplitude settles to within 0.05 dB of final value in &lt; 500 ms<\/li>\n\n\n\n<li>VSWR &lt; 1.8:1 at 50 \u03a9 output impedance<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<p>The continuous-wave diode-pumped solid-state green laser is based on a Non-Planar Ring Oscillator (NPRO). The output of the Nd:YAG NPRO is frequency-doubled using an efficient periodically poled crystal. Up to 100 mW of green output (532 nm) is available, while the depleted infrared beam at 1064 nm is also accessible with output power up to 1.5 W. Linewidth, tunability, stability, and noise characteristics of both beams are determined by the unique properties of the NPRO and low-noise electronics. The electronic noise-reduction circuitry suppresses residual pump-diode noise and relaxation oscillations below 1 MHz.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image4.png\"><img loading=\"lazy\" decoding=\"async\" width=\"453\" height=\"340\" src=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image4.png\" alt=\"\" class=\"wp-image-3863\" style=\"object-fit:cover\" srcset=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image4.png 453w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image4-300x225.png 300w\" sizes=\"(max-width: 453px) 100vw, 453px\" \/><\/a><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Laser power: 20 mW @ 532 nm and 1000 mW @ 1064 nm<\/li>\n\n\n\n<li>Stand-alone analogue control electronics<\/li>\n\n\n\n<li>Continuous-wave operation<\/li>\n\n\n\n<li>TEM\u2080\u2080 spatial mode, thermal and piezoelectric tuning<\/li>\n\n\n\n<li>Single-frequency output<\/li>\n\n\n\n<li>Coherence length &gt; 1 km<\/li>\n\n\n\n<li>Spectral linewidth ~ 1 kHz<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<p>Optical tables provide vibration isolation for sensitive setups such as biomedical systems, scanning microscopy, spectroscopy, interferometry, electrophysiology, and precision measurements. Optical and optomechanical components enable the design and implementation of measurement setups tailored to current experimental needs. Optical elements such as lenses are used to modify laser-beam properties.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image3.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image3-1024x768.png\" alt=\"\" class=\"wp-image-3864\" style=\"width:auto;height:400px\" srcset=\"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image3-1024x768.png 1024w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image3-300x225.png 300w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image3-768x576.png 768w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image3-1536x1153.png 1536w, https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/05\/image3.png 1999w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Air-filled vibration isolators<\/li>\n\n\n\n<li>Passive damping<\/li>\n\n\n\n<li>Mounting holes sealed with conical polymer cups<\/li>\n\n\n\n<li>Honeycomb internal structure<\/li>\n\n\n\n<li>Increased point-load capacity<\/li>\n\n\n\n<li>N-BK7 or UV-grade fused-silica substrates<\/li>\n\n\n\n<li>AR-coated and uncoated optics<\/li>\n\n\n\n<li>Precision micrometre screws (100 TPI)<\/li>\n\n\n\n<li>Reinforced carbide bases<\/li>\n\n\n\n<li>Lenses with focal lengths from f = \u201350 mm to f = 1500 mm<\/li>\n<\/ul>\n\n<\/div>\n\t\t<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Joint Laboratory of Faculty of Physics and Center for Micro- and Nanosciences and Technologies (NANORI), University of Rijeka. Room: O-S24 Head of Laboratory Acting Head of Laboratory<\/p>\n","protected":false},"author":4,"featured_media":5542,"parent":5584,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"ub_ctt_via":"","footnotes":""},"class_list":["post-5611","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"featured_image_src":"https:\/\/phy.uniri.hr\/wp-content\/uploads\/2025\/06\/O-Fakultetu.jpg","_links":{"self":[{"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages\/5611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/comments?post=5611"}],"version-history":[{"count":9,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages\/5611\/revisions"}],"predecessor-version":[{"id":7755,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages\/5611\/revisions\/7755"}],"up":[{"embeddable":true,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/pages\/5584"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/media\/5542"}],"wp:attachment":[{"href":"https:\/\/phy.uniri.hr\/en\/wp-json\/wp\/v2\/media?parent=5611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}