Introduction to Self Injection Locking

Self-injection locking to an external fiber cavity is an efficient technique enabling drastic linewidth narrowing and selfstabilization of semiconductor lasers.

Self-injection locking of a multi-mode chip-based gain allows access to high pump power while maintaining single mode operation.

In this research, a wavelength tunable self-injection locking (SIL) system based on free-space configuration for uplink transmission in a modulated retroreflector based asymmetric bidirectional optical wireless communication system is proposed and experimentally evaluated.

Self-injection locking is an effective tool of laser stabilization, known from the origins of radiophysics.

We propose and demonstrate a hybrid modulation bandwidth enhanced self-injection locking laser by butt coupling a commercial distributed feedback laser with an external high-Q silicon nitride microring reflector (MRR).

The self-injection locking (SIL) technique has been engaged to improve the linewidth and reduce the noise of the optical tone.

5 μm based on self-injection locking is experimentally demonstrated.

We experimentally observed self-injection locking regime of the gain-switched laser to high-Q optical microresonator.

Recent developments of self-injection locking of a DFB laser with an ultra-high Q resonator have enabled unprecedented low-noise performance of coherent light sources.

Self-injection locking to an external fiber cavity is an efficient technique enabling drastic linewidth narrowing of semiconductor lasers.

Self-injection locking of a laser diode to a high-Q whispering gallery mode (WGM) microresonator proved to be a simple an effective way of laser stabilization.

In this work, we study self-injection locking by delayed reflection of the multimode gyrotron with fixed Gaussian profile of the RF field.

In order to maintain the stable operation of the light source, an additional micro-ring resonator coupled with the laser source is design before the optical circuit which enables the laser diode to enter a self-injection locking state and improves the reflection tolerance.

Furthermore, we observe laser frequency noise reduction due to self-injection locking of the InP/Si laser to the Si3N4 microresonator.

We demonstrate a hybrid photonic integrated laser that exhibit intrinsic linewidth of 40 Hz, while offering unsurpassed megahertz actuation bandwidth with the tuning range larger than 1 GHz, attained by a DFB laser self-injection locking to a high-Q Si3N4 microres- onator with AlN piezoelectrical actuator, allowing both single line operation and microcomb generation.

The principle of operation employs the mechanism of self-injection locking that significantly improves DFB laser performance.

Self-injection locking (SIL) is an effect of the oscillator frequency stabilization by means of a passive external high-quality cavity enabling frequency filtered coherent optical feedback to the oscillator.

The demonstration of soliton formation via self-injection locking of the pump laser to the microresonator has significantly relaxed the requirement on the external driving lasers.

We demonstrate a hybrid photonic integrated laser with intrinsic linewidth of 40 Hz, while offering megahertz actuation bandwidth with the tuning range larger than 1 GHz, attained by a DFB laser self-injection locking to a high-Q Si3N4 microresonator with integrated AlN piezoelectrical actuator, allowing both single line operation and microcomb generation.

We report the first demonstration of octave spanning frequency combs generated by self-injection locking a distributed feedback laser to a Kerr microresonator.

For analysis of the considered effects original theoretical models taking into account self-injection locking effect, mode competition and Bogatov asymmetric mode interaction were developed and numerical modeling was performed.

We demonstrate via self-injection locking an electrically driven soliton micro-comb by coupling a multi-frequency laser diode to a chip-scale high-Q Si3N4 microresonator.

Here we demonstrate the self-injection locking of a distributed feedback diode laser using home-made high-finesse Fabry-Perot microcavity.

The key properties of the self-injection locking regime of a laser diode to a high-Q microresonator with whispering gallery mode made of crystalline silicon are considered.

In this work we present a theoretical model describing a phenomenon of self-injection locking of multi-frequency laser to high-Q optical microresonator.

Self-injection locking ensures monochromaticity of the laser.

Self-injection locking of a high-power laser diode to the microresonator allowed significantly decreasing the device volume.

Besides that the coupling of high-Q microresonator with a laser contributes to the stabilization of the laser and to a decrease of the width of its generation line via the self-injection locking effect [2, 3].

We implemented a tunable dual-longitudinal-mode spacing InGaN/GaN green (521–528 nm) laser diode by employing a self-injection locking scheme that is based on an external cavity configuration and utilizing either a high or partial-reflecting mirror.

It uses the forced technique self-injection locking, self-phase locking combination to stabilize the related inter-modal output.

In this work we present unique method to produce high-power single-frequency emission with sub-kHz linewidth [1] due to the self-injection locking effect [2] and soliton comb generation from the compact multi-frequency diode laser locked to high-Q optical microresonator [3].

This structure is the key component of a feedback network, added to an existing oscillator and providing a stable self-injection locking signal.

The ultrasonic sensing scheme simplifies the feedback control because the self-injection locking automatically pulls the laser wavelength to the πFBG resonant wavelength.

Self-injection locking - an efficient method to improve the spectral performance of semiconductor lasers without active stabilization - has already demonstrated its high potential for operation with single-longitude-mode fiber lasers.

This technique allows for generating of low-noise frequency combs with the linewidth around 100 kHz due to self-injection locking effect.

It results in significant phase-noise reduction of the oscillating edge through self-injection locking.

The effect of self-injection locking of a laser to a nonlinear microresonator is considered.