Self-pulsation in broad area lasers with transverse-mode selective feedback

Wolff, Sandra; Rodionov, Andrei; Sherstobitov, V E; Doering, Christoph; Fouckhardt, Henning

doi:10.1016/j.optcom.2006.04.008

Cited by 11 publications

(14 citation statements)

References 19 publications

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“…The complex dynamic behaviors have been studied intensively for both narrow-stripe diode lasers [23][24][25][26] and BALs [27][28][29][30][31][32][33][34][35][36] with external feedback. The dynamics of BALs have been investigated with short-cavity feedback [27][28][29], long-cavity feedback [30][31][32], tilt mirror feedback [33,34] and lateral-mode-selected feedback [35,36]. The feedback elements include ordinary mirrors [29][30][31][32][33][34], phase-conjugate mirrors [30] and spatially filtered mirrors [27,28,35,36].…”

Section: Dynamics Of the Green Ecdl Systemmentioning

confidence: 99%

“…The dynamics of BALs have been investigated with short-cavity feedback [27][28][29], long-cavity feedback [30][31][32], tilt mirror feedback [33,34] and lateral-mode-selected feedback [35,36]. The feedback elements include ordinary mirrors [29][30][31][32][33][34], phase-conjugate mirrors [30] and spatially filtered mirrors [27,28,35,36]. Different dynamic behaviors, such as low-frequency fluctuations (LFFs) [30,31], selfpulsation [35], periodic oscillations [33,36], pulse package oscillation (PPO) [28,29,36] and chaos [32], have been observed in the BALs with different external feedback.…”

Section: Dynamics Of the Green Ecdl Systemmentioning

confidence: 99%

“…The feedback elements include ordinary mirrors [29][30][31][32][33][34], phase-conjugate mirrors [30] and spatially filtered mirrors [27,28,35,36]. Different dynamic behaviors, such as low-frequency fluctuations (LFFs) [30,31], selfpulsation [35], periodic oscillations [33,36], pulse package oscillation (PPO) [28,29,36] and chaos [32], have been observed in the BALs with different external feedback. External grating feedback is widely used to achieve tunable high-power BAL systems [13][14][15][16].…”

Section: Dynamics Of the Green Ecdl Systemmentioning

confidence: 99%

See 2 more Smart Citations

Tunable High-Power External-Cavity GaN Diode Laser Systems in the Visible Spectral Range

Chi¹,

Jensen²,

Hansen³

et al. 2019

Laser Technology and Its Applications

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In this chapter, both blue and green high-power tunable diode laser systems based on GaN broad-area diode laser (BAL) in Littrow external cavity are demonstrated. For blue diode laser system, for high-power application, an output power around 530 mW over a 1.4 nm tunable range is obtained; for wide tunable range application, an output power around 80 mW over a 6.0 nm tunable range is obtained. For the green diode laser system, for high-power application, an output power around 480 mW with a tunable range of 2.1 nm is achieved; for wide tunable range application, an output power of 50 mW with a tunable range of 9.2 nm is achieved. The tuning range and output power optimization of an external-cavity diode laser system is investigated based on the experimental results obtained in the blue and green external-cavity GaN diode laser systems. The obtained results can be used as a guide for selecting gratings for external-cavity diode lasers for different requirements. The temporal dynamics of the green diode laser system is studied experimentally, and pulse package oscillation is observed, for the first time to our knowledge, in a BAL with an external-cavity grating feedback.

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Section: Dynamics Of the Green Ecdl Systemmentioning

confidence: 99%

Section: Dynamics Of the Green Ecdl Systemmentioning

confidence: 99%

Section: Dynamics Of the Green Ecdl Systemmentioning

confidence: 99%

See 1 more Smart Citation

Tunable High-Power External-Cavity GaN Diode Laser Systems in the Visible Spectral Range

Chi¹,

Jensen²,

Hansen³

et al. 2019

Laser Technology and Its Applications

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show abstract

“…In all these cases eventually spatial frequency filtering is performed. (Feedback from external cavities might also destabilize the BAL emission [15][16][17][18][19], e.g., leading to self-pulsation.) Also approaches with tapered lasers or laser-tapered amplifier arrangements or a current injection region narrower than the active region are known [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Fundamental Transverse Mode Selection (TMS#0) of Broad Area Semiconductor Lasers with Integrated Twice-Retracted 4f Set-Up and Film-Waveguide Lens

Fouckhardt

Kleinschmidt

Strassner

et al. 2017

Advances in OptoElectronics

Self Cite

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Previously we focused on fundamental transverse mode selection (TMS#0) of broad area semiconductor lasers (BALs) with two-arm folded integrated resonators for Fourier-optical spatial frequency filtering. The resonator had a round-trip length of 4f, where f is the focal length of the Fourier-transform element (FTE), that is, a cylindrical mirror in-between the orthogonal resonator branches. This 4f set-up can be called "retracted once" due to the reflective filter after 2f ; that is, the 2f path was used forwards and backwards. Now the branches are retracted once more resulting in a compact 1f long linear resonator (called "retracted twice") with a roundtrip length of 2f. One facet accommodates the filter, while the other houses the FTE, now incorporating a film-waveguide lens. The BAL facet with the filter represents both the Fourier-transform plane (after 2f, i.e., one round-trip) as well as the image plane (after 4f, two round-trips). Thus filtering is performed even after 4f, not just after 2f. Experimental results reveal good fundamental TMS for pump currents up to 20% above threshold and a one-dimensional beam quality parameter 2 1D = 1.47. The BALs are made from AlGaInAsSb, but the concept can equally well be employed for BALs of any material system.

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“…Working in a similar direction the group reporting here employed [24][25][26][27][28][29] an external Fourier-optical 4f spatial frequency filter set-up [30,31]. In this contribution we carry on with this approach, but incorporate the transverse mode selector (TMS) within the BAL resonator by monolithic integration, in order to prohibit influences by residual facet reflectivities, which are a problem in the case of any external TMS resonator.…”

Section: Introductionmentioning

confidence: 99%

Internal Transverse Mode Selection in Folded-resonator Antimonide Broad Area Lasers

Fouckhardt¹,

Hoffmann²,

Huthmacher³

et al. 2010

Journal of Optical Communications

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Antimonide broad area lasers (BAL) have been prepared that include a Fourier-optical 4f spatial frequency filter set-up as a transverse mode selector (TMS). The resonator is folded about the Fourier-transform mirror with its focal length f equal to the resonator branch length d (i. e. half resonator length). The resonator length 2d is 1.65 mm and the whole resonator is gain section as well as part of the TMS. The approach to integrate BAL and TMS monolithically is verified; the experiments are typically performed around 85 K temperature. The concept can be employed for any edge emitting BAL, but we used an AlGaInAsSb-based laser design with mid-infrared emission wavelength around 2 µm, where lasers with higher output powers within the fundamental transverse mode are still needed for many applications. Above a certain operating temperature (≈140 K) a double-hysteresis emerges in the output-power versus pump-current characteristics. This as well as the free spectral range strongly suggest that both resonator branches act together as one entity.

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Self-pulsation in broad area lasers with transverse-mode selective feedback

Cited by 11 publications

References 19 publications

Tunable High-Power External-Cavity GaN Diode Laser Systems in the Visible Spectral Range

Tunable High-Power External-Cavity GaN Diode Laser Systems in the Visible Spectral Range

Fundamental Transverse Mode Selection (TMS#0) of Broad Area Semiconductor Lasers with Integrated Twice-Retracted 4f Set-Up and Film-Waveguide Lens

Internal Transverse Mode Selection in Folded-resonator Antimonide Broad Area Lasers

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