Single Transverse Mode Operation of a Self-Seeded Commercial Multimode VCSEL

Cheng, Da-Long; Liu, En-Chi; Yen, Tsu-Chiang

doi:10.1109/lpt.2003.819388

Cited by 17 publications

(4 citation statements)

References 11 publications

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“…Increasing the emission power can be thus achieved by building large area VCSELs. This however introduces some difficulties such as filamentation 3 and multimode operation 4 5 6 7 . An attractive alternative is to build an array of coupled VCSEL lasers.…”

mentioning

confidence: 99%

“…Despite this tremendous success, laser arrays in general suffer from multimode operation. While several techniques for eliminating longitudinal modes of individual resonators exist 8 9 10 11 , suppressing the transverse supermodes is by no means an easy task 3 4 5 6 . This can be explained by noting that these supermodes arise as a result of eigenfrequency splitting introduced by the coupling between the individual laser resonators.…”

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confidence: 99%

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Non-Hermitian engineering of single mode two dimensional laser arrays

Teimourpour

Christodoulides

et al. 2016

Sci Rep

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A new scheme for building two dimensional laser arrays that operate in the single supermode regime is proposed. This is done by introducing an optical coupling between the laser array and lossy pseudo-isospectral chains of photonic resonators. The spectrum of this discrete reservoir is tailored to suppress all the supermodes of the main array except the fundamental one. This spectral engineering is facilitated by employing the Householder transformation in conjunction with discrete supersymmetry. The proposed scheme is general and can in principle be used in different platforms such as VCSEL arrays and photonic crystal laser arrays.

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confidence: 99%

mentioning

confidence: 99%

Non-Hermitian engineering of single mode two dimensional laser arrays

Teimourpour

Christodoulides

et al. 2016

Sci Rep

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“…Since the early days of the invention of the laser, a considerable number of approaches has been proposed to provide high-power laser systems for a variety of applications such as optical space communication, Light Detection and Ranging (LIDAR), spectroscopy and other purposes [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]. Among these methods, single mode lasing based on non-Hermitian engineering of the laser systems attracted considerable attention and different scenarios based on Parity Time (PT) symmetry [13][14][15][16] and Supersymmetry (SUSY) has been proposed so far [17][18][19][20].…”

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confidence: 99%

Extra Loss-free Non-Hermitian Engineered Single Mode Laser Systems (Conference Presentation)

Teimourpour

Heidari

Dalir

et al. 2020

Optical Interconnects XX

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In a laser system non-Hermitian methods such as Parity-Time (PT) Symmetry and Supersymmetry (SUSY) have shown and demonstrated the ability to suppress unwanted lasing modes and, thus, achieved single mode lasing operation through the addition of lossy passive elements. While these approaches enable laser engineering versatility, they rely on the drawback of adding optical losses to a system tasked to produce single mode gain. Unlike PT and SUSY lasers, here we show an extra loss-free non-Hermitian laser engineering approach to realize single mode lasing operation for the first time. By selectively enhancing the fundamental mode's quality factor, we obtain single mode operation with higher output power per cavity since all cavities in this system contribute to the laser output, in contrast to other non-Hermitian approaches. Furthermore, we show that this approach interestingly allows reducing the number of tobe-designed cavities in super-partner array as compared with, for example, the SUSY approach, thus leading to reduced design complexity upon coupled cavity scale up of laser arrays. In summary, the ability to engineer coupled laser systems where each laser cavity contributes to coherent light amplification opens up a new degree of laser-design freedom leading to increased device performance and simultaneous reduced design and fabrication complexity. Introduction:Non-Hermitian engineering of photonic systems for achieving certain functionalities has been a subject of passionate investigations in the past decade [1][2][3][4][5][6][7][8][9][10][11][12]. This interest was sparked by many applications such as single mode lasing [13][14][15][16][17][18][19][20], lasing dynamics control [21-23] and saturable absorber [24] to just mention a few [25].where the interaction between mismatched modes Ω and Ω is ignored, see Fig. 1(B).

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“…There have been no reports on a continuous shift of the emission point, although in some reports the control of the emission intensity profile of a multi-transverse-mode VCSEL has been proposed and demonstrated. 8,9) In this study, we used a smaller aperture VCSEL from the viewpoint of future applications requiring low power consumption and investigated the possibility of an emission shift controlled by optical feedback. The VCSEL supported only two transverse modes, and we found a continuous emissionpoint shift.…”

mentioning

confidence: 99%

Continuous Emission-Point Shift in Vertical-Cavity Surface-Emitting Laser Controlled by Optical Feedback

Ura¹,

Nii²,

Ito³

et al. 2010

Jpn. J. Appl. Phys.

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Emission intensity patterns and spectra of a two-transverse-mode vertical-cavity surface-emitting laser (VCSEL) were observed and measured while the position and polarization of an optical feedback light were controlled. Lasing behavior was discussed in relation to linear polarization modes. The observed emission point shift with unchanged wavelengths was explained by the superposition of two newly appeared modes.

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Single Transverse Mode Operation of a Self-Seeded Commercial Multimode VCSEL

Cited by 17 publications

References 11 publications

Non-Hermitian engineering of single mode two dimensional laser arrays

Non-Hermitian engineering of single mode two dimensional laser arrays

Extra Loss-free Non-Hermitian Engineered Single Mode Laser Systems (Conference Presentation)

Continuous Emission-Point Shift in Vertical-Cavity Surface-Emitting Laser Controlled by Optical Feedback

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