Advances in wide-tuning and narrow-linewidth external-cavity diode lasers

Cui, Qiang; Lei, Yuxin; Chen, Yongyi; Qiu, Cheng; Wang, Ye; Zhang, Dexiao; Fan, Lutai; Song, Yue; Jia, Ping; Liang, Lei; Wang, Yubing; Qin, Li; Ning, Yongqiang; Wang, Lijun

doi:10.1007/s11432-021-3454-7

“…The difference between the two Lorentz functions with different central wavelengths was used to obtain equation (4). The zeros of this function can be used to describe the combined effects of bandwidth and transmittance of the dual IFs.…”

Section: Selection and Combination Of Narrow-band Ifsmentioning

confidence: 99%

“…With the development of diode lasers and the demand for related fields, narrow linewidth, and wavelength tunability have gradually become the development direction of diode lasers. They are usually achieved by integrating the laser diode into an external cavity to form an external cavity diode laser (ECDL) [4].…”

Section: Introductionmentioning

confidence: 99%

Interference filter based external-cavity diode laser with combined dual interference filters and largely adjustable feedback range

Chang,

He,

Wang

2023

Phys. Scr.

0

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External-cavity diode lasers (ECDL) are widely used as light sources in laser spectroscopy, atomic physics, and quantum optics. This study demonstrated a home-made 852–nm ECDL with variable feedback, using the combined dual narrow-band interference filters (IFs) as the laser longitudinal mode selection element. The combination of narrow-band IFs, mainly for the current commercially available narrow-band IFs with the full width at half maximum (FWHM) of approximately 0.5 nm for 780-895 nm. We designed different narrow-band IFs combinations to achieve a narrower FWHM, and applied them in the ECDL. The combination of the dual narrow-band IFs further reduces the laser linewidth. We measured the laser linewidth using a high-finesse Fabry-Perot cavity with a linewidth of approximately 10 kHz. The laser linewidth is approximately 176 kHz for the Single-IF-ECDL and 96 kHz for the Dual-IF-ECDL with the same feedback. In addition, we have experimentally verified the results of narrower laser linewidth and larger tuning range with increase in the feedback. The developed Dual-IF-ECDL has the capability of narrow linewidth and wavelength tunability and can be applied to precision spectroscopy, cooling and trapping of neutral atoms.

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“…External cavity edge-emitting laser array (EC-EELA) has many advantages of high-power, high-efficiency, single longitudinal mode, wide wavelength tunable, narrow linewidth and so on, and is widely used in high-resolution spectroscopy, space laser communication, laser lidar, coherent detection etc [1][2][3][4][5]. Generally speaking, phase-locking methods using external cavity include confocal Fabry-Perot cavity [6,7], phase conjugated mirror [8,9], and free space volume diffraction grating (VBG) [10,11].…”

Section: Introductionmentioning

confidence: 99%

Steering Synchronization Dynamics of Laterally Coupled Laser Array with Monolithically-Integrated External Cold Cavity

Qi,

Lan,

Ma

et al. 2024

Preprint

0

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This study explores the synchronization dynamics of a one-dimension edge-emitting laser array monolithically-integrated with an external cold cavity comprehensively, aiming to achieve an in-phase mode optical field. By employing the optical feedback rate equation, the impact of mutual feedback coefficient and coupling coefficient on the synchronization process are investigated thoroughly. The proposed external cold cavity, designed according to the Talbot effect, could significantly diminish the reflectivity of front facet through separated electrode structure, therefore facilitating the phase-locking process. Consequently, the study uncovers the effective regime for establishing in-phase mode operation. Additionally, the numerical analysis also reveals the vivid synchronization dynamic from chaotic state to partial locking, then fully-phase-locked, and ultimately periodic oscillation. Based on the simulation results, our works could offer valuable insights for steering the on-chip optical field and developing novel laser arrays with high beam quality.

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“…External cavity edge-emitting laser array (EC-EELA) has many advantages of high-power, high-efficiency, single longitudinal mode, wide wavelength tunable, narrow linewidth and so on, and is widely used in high-resolution spectroscopy, space laser communication, laser lidar, coherent detection etc [1][2][3][4][5]. Generally speaking, phase-locking methods using external cavity include confocal Fabry-Perot cavity [6,7], phase conjugated mirror [8,9], and free space volume diffraction grating (VBG) [10,11].…”

Section: Introductionmentioning

confidence: 99%

Synchronization dynamics of tunable phase of monolithically-integrated external cold cavity edge-emitting laser array

Qi,

Lan,

Ma

et al. 2024

Preprint

0

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This study explores the synchronization dynamics of a one-dimension edge-emitting laser array monolithically-integrated with an external cold cavity comprehensively, aiming to achieve an in-phase mode optical field. By employing the optical feedback rate equation, the impact of mutual feedback coefficient and coupling coefficient on the synchronization process are investigated thoroughly. The proposed external cold cavity, designed according to the Talbot effect, could significantly diminish the reflectivity of front facet through separated electrode structure, therefore facilitating the phase-locking process. Consequently, the study uncovers the effective regime for establishing in-phase mode operation. Additionally, the numerical analysis also reveals the vivid synchronization dynamic from chaotic state to partial locking, then fully-phase-locked, and ultimately periodic oscillation. Based on the simulation results, our works could offer valuable insights for steering the on-chip optical field and developing novel laser arrays with high beam quality.

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Advances in wide-tuning and narrow-linewidth external-cavity diode lasers

Cited by 8 publications

References 122 publications

Interference filter based external-cavity diode laser with combined dual interference filters and largely adjustable feedback range

Interference filter based external-cavity diode laser with combined dual interference filters and largely adjustable feedback range

Steering Synchronization Dynamics of Laterally Coupled Laser Array with Monolithically-Integrated External Cold Cavity

Synchronization dynamics of tunable phase of monolithically-integrated external cold cavity edge-emitting laser array

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