Nanomodulator and Ultrafast Laser Technology Designed and Developed in Finland

Nanomodulator and ultrafast laser technology designed and developed in Finland

High-performance, cost-effective, compact and ultra- broadband solutions

Aalto University commercialization project

Radhakrishnan Rajamanickam, A-Photonics, EPIC Online Technology Meeting on Ophthalmology About A-Photonics

• Who: Commercialization & research project at Aalto University, Finland focused on ultrashort pulse laser technology. All fabrication & assembly in Finland.

• What: • Electro-optic intensity modulators enabling active mode-locking* ultrashort pulse lasers throughout SWIR region. • 1950 nm actively mode-locked fiber laser

• Aim: A) Develop technology geared for industry B) Provide laser technology to partners and co-develop new & high-potential solutions

• Timeline: January 2019 – September 2020.

Afterwards: planned spinout company Modulators produced on silicon wafer. 1440 devices shown.

*Synchronization of laser optical pulse with external electrical signal, higher laser pulsing rate

Radhakrishnan Rajamanickam, A-Photonics, EPIC Online Technology Meeting on Ophthalmology Technology overview: modulators

• Electro-optic intensity modulators on silicon chip, wafer-scale fabrication, low cost

• Enabling active mode locking* ultra short pulse lasers throughout SWIR

• Designed for pico- and femtosecond laser.

• Nano- and microsecond intensity modulation easily enabled.

• Repetition rate 100’s MHz to GHz

• Modulation depth 4 -6 %

• Ultra broad band operation .

• One design suitable for, e.g., 1.55–1.95 µm or 2.2–3.0 µm

*Synchronization of laser optical pulse with external electrical signal, higher laser pulsing rate Radhakrishnan Rajamanickam, A-Photonics, EPIC Online Technology Meeting on Ophthalmology Technology overview: lasers (in progress)

• Ultrafast actively mode-locked fiber laser operating on 1950nm wavelength

• Pulse duration: picosecond region

• Repetition rate: close to 100 MHz. Electrically controllable

• Envisioned to provide more cost effective and compact solutions

• Applications: NDT, imaging and surgery etc.

- What we are usually interested in OCT is diagnostics of potential conditions which bring EXAMPLE: SS-OCT discomfort to a person. - Good quality imaging of anterior segment can be - “Standard” OCT focuses on posterior segment, as enabled using longer wavelength SS-OCT, sweeping many different dangerous conditions evolve there. along water absorption curve, which will enable For example, Macular degeneration. rapid tear film analysis while blinking and lower penetration depth. - One of the most common conditions of the eye – dry eye syndrome (DES)– will be experienced by - Guiding of fs laser surgery using SS-OCT at 2um could many people, if not everyone. Currently DES is also would a be a use-case diagnosed using mostly invasive methods.

Radhakrishnan Rajamanickam, A-Photonics, EPIC Online Technology Meeting on Ophthalmology EPIC questions?

What we can do for you ? • 1.Components: Electro-optic modulators • 2. Product: • 1.5µm and 2µm Actively mode locked laser • Swept-source OCT integration

What EPIC and its members can do for us? • Detector collaboration • System integration • Laser companies interested in joint system building • Medical professionals

Radhakrishnan Rajamanickam, A-Photonics, EPIC Online Technology Meeting on Ophthalmology Let us be in touch

More information:

Radhakrishnan Rajamanickam (RRK) [email protected] Mobile : + 358 442 443 331

Daria Hedberg [email protected] Mobile : + 358 405 852 024

Radhakrishnan Rajamanickam, A-Photonics, EPIC Online Technology Meeting on Ophthalmology