Frequency narrowing of a 25 W broad area diode laser

Sell, Jerry; Miller, Wooddy S.; Wright, Daniel Nilsen; Zhdanov, B. V.; Knize, R. J.

doi:10.1063/1.3079418

Cited by 21 publications

(5 citation statements)

References 13 publications

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“…The Littrow external-cavity configuration is one of the core externalcavity configurations applied to achieve tunable narrow-linewidth diode laser emission due to its compactness and simplicity compared with other external-cavity configurations such as the Littman externalcavity [14,15]. In the Littrow external-cavity geometry, the laser beam from one facet of a diode laser is collimated and incident on a diffraction grating mounted in Littrow configuration.…”

Section: Methodsmentioning

confidence: 99%

Tuning range and output power optimization of an external-cavity GaN diode laser at 455 nm

2016

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In this paper we discuss how different feedback gratings affect the tuning range and the output power of external feedback diode laser systems. A tunable high-power narrow-spectrum external-cavity diode laser system around 455 nm is investigated. The laser system is based on a high-power GaN diode laser in a Littrow external-cavity. Both a holographic diffraction grating and a ruled diffraction grating are used as feedback elements in the external cavity. The output power, spectral bandwidth, and tunable range of the external cavity diode laser system are measured and compared with the two gratings at different injected currents. When the holographic grating is used, the laser system can be tuned over a range of 1.4 nm with an output power around 530 mW. When the ruled grating is used, the laser system can be tuned over a range of 6.0 nm with an output power around 80 mW. The results can be used as a guide for selecting gratings for external-cavity diode lasers for different requirements.

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Section: Methodsmentioning

confidence: 99%

Tuning range and output power optimization of an external-cavity GaN diode laser at 455 nm

2016

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“…The use of tapered gain regions in the so-called tapered lasers (TLs), and closely related tapered amplifiers (TAs), combine the advantages of low power (narrow-waveguide) and high power (broad-waveguide) DLs which results in high power, improved spectral characteristics, as well as nearly diffraction limited beam quality [61]. In more refined systems, various extended cavity configurations combine with BAL [62][63][64], TL [65,66] or TA [14,24,67] to ensure, in addition to high power, also tunability, reduced linewidth and better stability. In some implementations, a spectrally narrow, nearly Gaussian beam has been obtained [14,24].…”

Section: Introductionmentioning

confidence: 99%

Opto-Electronics Review

Szonert,

Głódź,

Kowalski

2021

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We developed a three-stage, amplifying, tunable diode laser system that comprises a master laser in a Littrow configuration, frequency-stabilized by dichroic atomic vapour laser lock, acousto-optic frequency shifter, injection-locked slave laser, and tapered amplifier. The slave amplifies the injected frequency-shifted master beam while suppressing (within 0.5 %) the strong dependence of its intensity on the acousto-optic frequency shifter carrier frequency, thus acting as a strongly saturated optical limiting amplifier with constant output power. The resulting beam is then amplified in a tapered amplifier. The system provides an output power above 700 mW at a wavelength of 780 nm, with a time-averaged linewidth of 0.6 MHz, and a frequency drift below 2 MHz/h. Dichroic atomic vapour laser lock enables frequency stabilization in the range of 400 MHz around D2 lines of rubidium. The mode-hop-free tuning range amounts to 2 GHz. Determined by the acousto-optic frequency shifter model used, the fine-tuning range (precision of few tens kHz) spans 70 MHz. A description of the system was presented and its performance was tested. The basic components have been designed in our laboratory.

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“…The spectral bandwidth of these high-power BALs is around 1 nm, and this broad emission bandwidth limits the application of these devices in many fields, such as laser holographic display, biophotonics [4,5]. External-cavity feedback based on a grating is a commonly used technique to achieve a tunable narrow-bandwidth high-power diode laser system [6][7][8][9]. Recently, we demonstrated a highpower tunable diode laser system based on Littrow external-cavity feedback around 515 nm, where an output power of up to 480 mW and a tunable range of up to 9.2 nm was achieved, and the spectral bandwidth is around 9 pm with low output power and less than 0.25 nm with high output power [10].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of a green high-power tunable external-cavity broad-area GaN diode laser

et al. 2018

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Frequency narrowing of a 25 W broad area diode laser

Cited by 21 publications

References 13 publications

Tuning range and output power optimization of an external-cavity GaN diode laser at 455 nm

Tuning range and output power optimization of an external-cavity GaN diode laser at 455 nm

Opto-Electronics Review

Dynamics of a green high-power tunable external-cavity broad-area GaN diode laser

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