Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Georges Perin; Laurent Lablonde; Marco Rossetti; Marco Malinverni; Antonino Castiglia; Marcus Duelk; Stéphane Trebaol

doi:10.48550/arxiv.2607.24240

Paper details

Research paper

Experimental CharacterizationTheoretical

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Georges Perin, Laurent Lablonde, Marco Rossetti, Marco Malinverni et al.

2025·arXiv:2607.24240

Samples

Each sample groups how it was prepared, characterized, and measured. Click a card to expand.

Self-injection-locked GaN DFB laser diode coupled to a fiber Bragg grating external cavity for narrow-linewidth operation.

2 characterizations15 properties2 figures

ExperimentalGaNStudied Materialgermanosilicate single-mode fiberSubstrate / Dielectricfiber Bragg gratingSubstrate / Dielectric

Free-running GaN DFB laser diode measured without the FBG feedback cavity for linewidth and frequency-noise baseline comparison.

1 characterization3 properties1 figure

ReferenceGaNStudied Materialgermanosilicate single-mode fiberSubstrate / Dielectric

Materials

GaN

Studied Material

Also known as

gallium nitride

studied material

germanosilicate single-mode fiber

Substrate / Dielectric

Also known as

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser | Matter42 Literature

Properties

Type	Label	Value	Material	Sample	Condition	Source
Laser Linewidth	free-running DFB linewidth	20MHz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Laser Linewidth	self-injection-locked linewidth	4MHz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Linewidth	intrinsic SIL linewidth	170Hz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Linewidth	intrinsic free-running linewidth from white-noise floor	1.2MHz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Frequency Noise White Floor	free-running white-noise floor	400000Hz²/Hz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Frequency Noise White Floor	SIL white-noise floor	55Hz²/Hz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Output Power	fiber output power	11mW	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Output Power	maximum output power	80mW	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Frequency Tuning Coefficient	current tuning efficiency	300MHz/mA	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Mode Hop Free Tuning Range	continuous mode-hop-free range	600MHz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Wavelength Tuning Rate	current tuning rate	4pm/mA	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Wavelength Tuning Rate	temperature tuning rate	15pm/K	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
External Cavity Length	external cavity length	2cm	germanosilicate single-mode fiber fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Fiber Bragg Grating Fwhm	FBG reflection bandwidth	25pm	fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Fiber Bragg Grating Peak Reflectivity	FBG peak reflectivity	60%	fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Wavelength	DFB emission wavelength	452.4nm	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Laser Wavelength	FBG peak wavelength	452.45nm	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Coupling Efficiency	optical coupling efficiency	20%	GaN germanosilicate single-mode fiber fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—

Properties

Type	Label	Value	Material	Sample	Condition	Source
Laser Linewidth	free-running DFB linewidth	20MHz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Laser Linewidth	self-injection-locked linewidth	4MHz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Linewidth	intrinsic SIL linewidth	170Hz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Linewidth	intrinsic free-running linewidth from white-noise floor	1.2MHz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Frequency Noise White Floor	free-running white-noise floor	400000Hz²/Hz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Frequency Noise White Floor	SIL white-noise floor	55Hz²/Hz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Output Power	fiber output power	11mW	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Output Power	maximum output power	80mW	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Frequency Tuning Coefficient	current tuning efficiency	300MHz/mA	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Mode Hop Free Tuning Range	continuous mode-hop-free range	600MHz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Wavelength Tuning Rate	current tuning rate	4pm/mA	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Wavelength Tuning Rate	temperature tuning rate	15pm/K	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
External Cavity Length	external cavity length	2cm	germanosilicate single-mode fiber fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Fiber Bragg Grating Fwhm	FBG reflection bandwidth	25pm	fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Fiber Bragg Grating Peak Reflectivity	FBG peak reflectivity	60%	fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Wavelength	DFB emission wavelength	452.4nm	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Laser Wavelength	FBG peak wavelength	452.45nm	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Coupling Efficiency	optical coupling efficiency	20%	GaN germanosilicate single-mode fiber fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—

Properties

Type	Label	Value	Material	Sample	Condition	Source
Laser Linewidth	free-running DFB linewidth	20MHz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Laser Linewidth	self-injection-locked linewidth	4MHz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Linewidth	intrinsic SIL linewidth	170Hz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Linewidth	intrinsic free-running linewidth from white-noise floor	1.2MHz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Frequency Noise White Floor	free-running white-noise floor	400000Hz²/Hz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Frequency Noise White Floor	SIL white-noise floor	55Hz²/Hz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Output Power	fiber output power	11mW	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Output Power	maximum output power	80mW	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Frequency Tuning Coefficient	current tuning efficiency	300MHz/mA	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Mode Hop Free Tuning Range	continuous mode-hop-free range	600MHz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Wavelength Tuning Rate	current tuning rate	4pm/mA	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Wavelength Tuning Rate	temperature tuning rate	15pm/K	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
External Cavity Length	external cavity length	2cm	germanosilicate single-mode fiber fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Fiber Bragg Grating Fwhm	FBG reflection bandwidth	25pm	fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Fiber Bragg Grating Peak Reflectivity	FBG peak reflectivity	60%	fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Wavelength	DFB emission wavelength	452.4nm	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Laser Wavelength	FBG peak wavelength	452.45nm	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Coupling Efficiency	optical coupling efficiency	20%	GaN germanosilicate single-mode fiber fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—

Properties

Type	Label	Value	Material	Sample	Condition	Source
Laser Linewidth	free-running DFB linewidth	20MHz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Laser Linewidth	self-injection-locked linewidth	4MHz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Linewidth	intrinsic SIL linewidth	170Hz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Linewidth	intrinsic free-running linewidth from white-noise floor	1.2MHz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Frequency Noise White Floor	free-running white-noise floor	400000Hz²/Hz	GaN	Free-running GaN DFB laser diode measured without the FBG fe		—
Frequency Noise White Floor	SIL white-noise floor	55Hz²/Hz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Output Power	fiber output power	11mW	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Output Power	maximum output power	80mW	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Frequency Tuning Coefficient	current tuning efficiency	300MHz/mA	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Mode Hop Free Tuning Range	continuous mode-hop-free range	600MHz	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Wavelength Tuning Rate	current tuning rate	4pm/mA	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Wavelength Tuning Rate	temperature tuning rate	15pm/K	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
External Cavity Length	external cavity length	2cm	germanosilicate single-mode fiber fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Fiber Bragg Grating Fwhm	FBG reflection bandwidth	25pm	fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Fiber Bragg Grating Peak Reflectivity	FBG peak reflectivity	60%	fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber		—
Laser Wavelength	DFB emission wavelength	452.4nm	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Laser Wavelength	FBG peak wavelength	452.45nm	GaN	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—
Coupling Efficiency	optical coupling efficiency	20%	GaN germanosilicate single-mode fiber fiber Bragg grating	Self-injection-locked GaN DFB laser diode coupled to a fiber	—	—

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Samples

Self-injection-locked GaN DFB laser diode coupled to a fiber Bragg grating external cavity for narrow-linewidth operation.

Free-running GaN DFB laser diode measured without the FBG feedback cavity for linewidth and frequency-noise baseline comparison.

Materials

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Samples

Self-injection-locked GaN DFB laser diode coupled to a fiber Bragg grating external cavity for narrow-linewidth operation.

Free-running GaN DFB laser diode measured without the FBG feedback cavity for linewidth and frequency-noise baseline comparison.

Materials

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Samples

Self-injection-locked GaN DFB laser diode coupled to a fiber Bragg grating external cavity for narrow-linewidth operation.

Free-running GaN DFB laser diode measured without the FBG feedback cavity for linewidth and frequency-noise baseline comparison.

Materials

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Samples

Self-injection-locked GaN DFB laser diode coupled to a fiber Bragg grating external cavity for narrow-linewidth operation.

Free-running GaN DFB laser diode measured without the FBG feedback cavity for linewidth and frequency-noise baseline comparison.

Materials

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Samples

Self-injection-locked GaN DFB laser diode coupled to a fiber Bragg grating external cavity for narrow-linewidth operation.

Free-running GaN DFB laser diode measured without the FBG feedback cavity for linewidth and frequency-noise baseline comparison.

Materials

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Samples

Self-injection-locked GaN DFB laser diode coupled to a fiber Bragg grating external cavity for narrow-linewidth operation.

Free-running GaN DFB laser diode measured without the FBG feedback cavity for linewidth and frequency-noise baseline comparison.

Materials

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Samples

Self-injection-locked GaN DFB laser diode coupled to a fiber Bragg grating external cavity for narrow-linewidth operation.

Free-running GaN DFB laser diode measured without the FBG feedback cavity for linewidth and frequency-noise baseline comparison.

Materials

Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser

Samples

Self-injection-locked GaN DFB laser diode coupled to a fiber Bragg grating external cavity for narrow-linewidth operation.

Free-running GaN DFB laser diode measured without the FBG feedback cavity for linewidth and frequency-noise baseline comparison.

Materials

Characterization

Properties

Simulations

Characterization

Properties

Simulations

Characterization

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Simulations

Characterization

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Simulations