Deep modulation of second-harmonic light by wavelength detuning of a laser diode

Mathias Christensen; Anders Kragh Hansen; Danny Noordegraaf; Ole Bjarlin Jensen; Peter M. W. Skovgaard

doi:10.1364/AO.56.002250

Deep modulation of second-harmonic light by wavelength detuning of a laser diode

Mathias Christensen, Anders Kragh Hansen, Danny Noordegraaf, Ole Bjarlin Jensen, Peter M. W. Skovgaard

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Abstract

Power modulated visible lasers are interesting for a number of applications within areas such as laser displays and medical laser treatments. In this paper, we present a system for modulating the second-harmonic light generated by single-pass frequency doubling of a distributed feedback (DFB) master oscillator power amplifier (MOPA) laser diode with separate electrical contacts for the MO and the PA. A modulation depth in excess of 97% from 0.1 Hz to 10 kHz is demonstrated. This is done by wavelength tuning of the laser diode using only a 40 mA adjustment of the current through the MO. The bandwidth of the modulation is limited by the electronics. This method has the potential to decrease the size as well as cost of modulated visible lasers. The achievable optical powers will increase as DFB MOPAs are further developed. (C) 2017 Optical Society of America

Original language	English
Journal	Applied Optics
Volume	56
Issue number	8
Pages (from-to)	2250-2254
ISSN	1559-128X
DOIs	https://doi.org/10.1364/AO.56.002250
Publication status	Published - 2017

Keywords

Atomic and Molecular Physics, and Optics
Feedback amplifiers
Frequency doublers
Modulation
Optical phase conjugation
Power amplifiers
Distributed feedback
Electrical contacts
Frequency-doubling
Master oscillator power amplifier lasers
Modulation depth
Second harmonics
Wavelength detuning
Wavelength tuning
Diodes

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title = "Deep modulation of second-harmonic light by wavelength detuning of a laser diode",

abstract = "Power modulated visible lasers are interesting for a number of applications within areas such as laser displays and medical laser treatments. In this paper, we present a system for modulating the second-harmonic light generated by single-pass frequency doubling of a distributed feedback (DFB) master oscillator power amplifier (MOPA) laser diode with separate electrical contacts for the MO and the PA. A modulation depth in excess of 97\% from 0.1 Hz to 10 kHz is demonstrated. This is done by wavelength tuning of the laser diode using only a 40 mA adjustment of the current through the MO. The bandwidth of the modulation is limited by the electronics. This method has the potential to decrease the size as well as cost of modulated visible lasers. The achievable optical powers will increase as DFB MOPAs are further developed. (C) 2017 Optical Society of America",

keywords = "Atomic and Molecular Physics, and Optics, Feedback amplifiers, Frequency doublers, Modulation, Optical phase conjugation, Power amplifiers, Distributed feedback, Electrical contacts, Frequency-doubling, Master oscillator power amplifier lasers, Modulation depth, Second harmonics, Wavelength detuning, Wavelength tuning, Diodes",

author = "Mathias Christensen and Hansen, \{Anders Kragh\} and Danny Noordegraaf and Jensen, \{Ole Bjarlin\} and Skovgaard, \{Peter M. W.\}",

year = "2017",

doi = "10.1364/AO.56.002250",

language = "English",

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AU - Christensen, Mathias

AU - Hansen, Anders Kragh

AU - Noordegraaf, Danny

AU - Jensen, Ole Bjarlin

AU - Skovgaard, Peter M. W.

PY - 2017

Y1 - 2017

N2 - Power modulated visible lasers are interesting for a number of applications within areas such as laser displays and medical laser treatments. In this paper, we present a system for modulating the second-harmonic light generated by single-pass frequency doubling of a distributed feedback (DFB) master oscillator power amplifier (MOPA) laser diode with separate electrical contacts for the MO and the PA. A modulation depth in excess of 97% from 0.1 Hz to 10 kHz is demonstrated. This is done by wavelength tuning of the laser diode using only a 40 mA adjustment of the current through the MO. The bandwidth of the modulation is limited by the electronics. This method has the potential to decrease the size as well as cost of modulated visible lasers. The achievable optical powers will increase as DFB MOPAs are further developed. (C) 2017 Optical Society of America

AB - Power modulated visible lasers are interesting for a number of applications within areas such as laser displays and medical laser treatments. In this paper, we present a system for modulating the second-harmonic light generated by single-pass frequency doubling of a distributed feedback (DFB) master oscillator power amplifier (MOPA) laser diode with separate electrical contacts for the MO and the PA. A modulation depth in excess of 97% from 0.1 Hz to 10 kHz is demonstrated. This is done by wavelength tuning of the laser diode using only a 40 mA adjustment of the current through the MO. The bandwidth of the modulation is limited by the electronics. This method has the potential to decrease the size as well as cost of modulated visible lasers. The achievable optical powers will increase as DFB MOPAs are further developed. (C) 2017 Optical Society of America

KW - Atomic and Molecular Physics, and Optics

KW - Feedback amplifiers

KW - Frequency doublers

KW - Modulation

KW - Optical phase conjugation

KW - Power amplifiers

KW - Distributed feedback

KW - Electrical contacts

KW - Frequency-doubling

KW - Master oscillator power amplifier lasers

KW - Modulation depth

KW - Second harmonics

KW - Wavelength detuning

KW - Wavelength tuning

KW - Diodes

U2 - 10.1364/AO.56.002250

DO - 10.1364/AO.56.002250

M3 - Journal article

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SN - 1559-128X

VL - 56

SP - 2250

EP - 2254

JO - Applied Optics

JF - Applied Optics

IS - 8

ER -

Deep modulation of second-harmonic light by wavelength detuning of a laser diode

Abstract

Keywords

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