Recherche

Crédit photo: Josée Lecompte

Sciences et technologies ultrarapides

Les lasers et les technologies ultrarapides permettent aux scientifiques d'entrevoir des phénomènes microscopiques se produisant aux niveaux atomiques et moléculaires.

Crédit photo: Josée Lecompte

Applications possibles

Dans le milieu académique, elles trouvent des applications dans les domaines de la spectroscopie, de l'optique non linéaire et quantique, de l'imagerie biomédicale et bien d'autres encore.

Elles trouvent également des applications dans les cinq secteurs clés de l'innovation au Canada:

Environnement et Agriculture

Ressources naturelles et énergie

Technologies de l'information et des communications

Fabrication de pointe

Santé et les sciences de la vie

Par exemple, les lasers ultrarapides sont utilisés pour la fabrication avancée des matériaux avec un microprocesseur de haute précision, donnant lieu à de nouvelles technologies de l'information et de la communication.

Projets de recherche

Disponible

INRS EMT, Varennes, QC

Postes de doctorat (Ph. D.) en photonique extrême dans le laboratoire de Tsuneyuki Ozaki

Domaines de recherche : génération de hautes harmoniques, spectroscopie Térahertz avancée, biophotonique.

3 projets de doctorat disponibles :

  • Projet #1 : Source femtoseconde à haute puissance moyenne dans l'ultraviolet extrême
    (FAMEUS)
  • Projet #2 : Photonique térahertz non linéaire
  • Projet #3 : Capteur térahertz à haute sensibilité et à haut rendement pour la biologie et la médecine

Pour plus de détails, cliquez sur le titre.

Tsuneyuki Ozaki

Professeur

INRS EMT et O/E Land Inc., Varennes et LaSalle, QC

Development of a passive mode-locked fiber laser at 1300 nm spectral region

This project involved the design, construction, and characterization of a self-starting, passively mode-locked fiber laser operating in the O-band, centered at a wavelength of 1310 nm. Leveraging advanced fiber optics and mode-locking techniques, the laser was engineered to produce pulses with durations in the nanosecond range. The use of passive mode-locking—achieved through a nonlinear amplifying loop mirror in a figure-9 configuration—ensured simplicity, stability, and cost-effectiveness, making it a strong candidate for applications including telecommunications, medical imaging, and spectroscopy.

 

The system demonstrated stable pulse generation across a 120 nm tunable wavelength range, with a fundamental repetition rate of 12.7 MHz. Pulse durations ranged from 10.4 ns to 58.8 ns, and the spectral bandwidth varied between 0.21 nm and 0.41 nm. Stability and self-starting operation were supported by a polarization controller and a fiber-based phase shifter.

 

Key milestones included the design and assembly of the fiber laser cavity, optimization of mode-locking conditions, and thorough characterization of pulse parameters. The performance of the laser was benchmarked against conventional sources, with improvements in tunability, stability, and spectral characteristics.

 

This compact and robust laser system offers strong potential for integration into advanced photonic systems, supporting further developments in nonlinear optical microscopy, optical coherence tomography, and high-speed data transmission. Overall, this project contributes meaningfully to the field of fiber-based pulsed lasers, advancing the understanding and implementation of passive mode-locking techniques in the 1310 nm spectral region.

Narges Amouzandeh

Étudiante à la maîtrise avec le professeur François Légaré de l'INRS, en collaboration avec O/E Land Inc.

UNBC, Prince George, BC

Construction of a Low-Cost Interference-Based Extended Terahertz Scanner for Characterizing Moisture Content and Density

The NSERC CREATE TrUST program is a recently introduced training ecosystem with the goal of creating the next generation of innovators, scientists and entrepreneurs in ultrafast science and technology. It does this by bringing together Canada’s national labs, researchers and companies to provide opportunities to students to develop skills, learn networking and contribute to the innovation sectors of Canada. Two of these sectors include natural resources and manufacturing.

 

This is where my project for my M. Sc. in Physics thesis fits. By creating a novel apparatus, we are attempting to use phase contrast Terahertz imaging to finely measure mass variation and moisture content in paper products. This is done by constructing a Mach-Zehnder type interferometer to recover the phase change of a diode-produced laser beam passing through a sample. By using a series of silicon beam splitters, we split our reference and sample arms into multiple equivalent beams along a simulated manufacturing line. We then recombine them at an angle in the plane of the beam onto a detector. This produces an interference pattern that is dependent on the mass per unit area in the sampling arm of the interferometer. As the mass is found using the phase, the intensity can be calibrated to indicate moisture content variations in the sample. This non-destructive imaging technique will also be applicable to other forms of manufacturing and quality control such as plastics and particle board.

Lucas Bergen

Étudiant à la maîtrise avec les professeurs Matt Reid et Ian Hartley de l'UNBC

Stages en industrie

Formulaire de proposition de stage pour les compagnies

Si vous travaillez dans une compagnie qui est à la recherche de stagiaires hautement qualifié(e)s et que vous êtes intéressé(e) à engager des étudiant(e)s de TrUST, remplissez ce formulaire de description de stage et contactez la coordonnatrice du programme (genevieve.boudreau@inrs.ca).

GeologicAI, Calgary, AB

My internship with GeologicAI : a unique experience that I am extremely grateful for

Hi, my name is Liam. I’m an M. Sc. candidate at the University of Alberta and a member of the NSERC CREATE TrUST program. I undertook a 4 month internship at GeologicAI at their Calgary, Alberta office where I developed a Laser-Induced Breakdown Spectroscopy (LIBS) unit for detecting elemental signatures within drill core and grading ore samples. It was a great extension of my work as an M. Sc. student at the U of A, and despite the short term of work, I was able to design, build, and test — from the ground up — a laser system for them. I was able to work with a team of extremely field-diverse individuals across their respective areas of expertise, and was able to learn about, and help further, work in X-Ray Fluorescence (XRF) spectroscopy as well as Hyperspectral Imaging (HSI).

 

It was a unique experience and I’m extremely grateful to both GeologicAI and the NSERC CREATE TrUST program for the opportunity. I was able to expand my knowledge of LIBS and the underlying physical processes by applying my existing knowledge to new problems in a different application than I had worked on before. This gave me good experience and insight into the differences between academic and industrial research, allowing me to make better informed decisions for my future career path. The internships I’ve taken throughout my undergrad and M. Sc. have been some of the best decisions I have made, and I would strongly encourage existing and incoming undergraduate and graduate students to pursue opportunities such as these.

Liam Droog

Étudiant à la maîtrise avec la professeure Amina Hussein (Université d'Alberta) et stagiaire chez GeologicAI

Lumentum, Ottawa, ON

My internship with Lumentum : a valuable complement to my academic training

My name is Amin, and I am a PhD candidate in Physics at the University of Ottawa, as well as a member of the CREATE TrUST program. I recently began an internship at Lumentum, a leading photonics company based in Ottawa. The internship was initially offered for 8 months, with the possibility of extension based on performance, and I’m happy to say the company has been very satisfied with my contributions.

 

At Lumentum, I’ve been working on the design of optical verification tests and the characterization of optical performance for WSS (Wavelength Selective Switch) modules — one of the key technologies developed by the company. This was a new area for me, but thanks to a well-structured onboarding process, I was able to quickly get up to speed and begin making meaningful contributions to the team.

 

This internship has been a valuable complement to my academic training. It has deepened my understanding of many theoretical concepts by applying them to real-world projects and has given me insight into how industrial research and development differ from academic work. Experiencing both environments has been incredibly helpful in thinking about my future career path and where I see the best fit for my skills and interests.

 

I strongly encourage other students in the ultrafast science field to take advantage of internship opportunities like this. It’s a chance to gain hands-on experience, expand your professional network, and explore new directions for your future. I’m truly grateful to the CREATE TrUST program for providing this opportunity and supporting students in building meaningful connections between academia and industry.

Mohammad Amin Hemmatian

Étudiant au doctorat avec la professeure Ksenia Dolgaleva (Université d'Ottawa) et stagiaire chez Lumentum