The application of telecoms-style packaging techniques to narrow linewidth laser modules for quantum technologies

Dorward, William; Lee, Stephen T.; Bremner, Douglas L.; Robertson, Stephen; Jones, Brynmor E.; Carson, Christopher; McKnight, Loyd

doi:10.1117/12.2513183

Cited by 3 publications

(5 citation statements)

References 5 publications

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“…To ensure comparability, the volume of control electronics was not taken into account. Allan deviations of the OFRs used in [20] and [24] have been evaluated again in this work and in case of [29], the Allan deviation was estimated based on a power spectral density. represents a technology demonstrator for future compact cell the module to a fluorescence based two-photon [46] or an absorption based 5S-6P transition scheme [47] in rubidium could be an option for higher stability with similar SWaP.…”

Section: Discussion and Outlookmentioning

confidence: 99%

“…Figure 5 shows a comparison of iQube's performance, measured by the Allan deviation at 1 s averaging time, and volume to other compact optical frequency references based on atomic vapors. Our module lines up with the other most compact systems that achieve Allan deviation of 10 −11 and below with 1 s averaging time: [29] and [30].…”

Section: Performancementioning

confidence: 97%

“…Miniaturization is realized by using small optical breadboards [23][24][25][26] or micro-integration of optical components [27,28] around the alkali vapor cells. Especially, integration of the light source and the spectroscopy unit into one package [29] as well as the use of MEMS vapor cells [30][31][32] enable major size reduction of the systems. Reaching the SWaP threshold for nanosatellite implementation is thus realistic.…”

Section: Introductionmentioning

confidence: 99%

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A Prototype of a Compact Rubidium-Based Optical Frequency Reference for Operation on Nanosatellites

Strangfeld,

Kanthak,

Schiemangk

et al. 2021

Preprint

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Space-borne optical frequency references based on spectroscopy of atomic vapors may serve as an integral part of compact optical atomic clocks, which can advance global navigation systems, or can be utilized for earth observation missions as part of laser systems for cold atom gradiometers. Nanosatellites offer low launch-costs, multiple deployment opportunities and short payload development cycles, enabling rapid maturation of optical frequency references and underlying key technologies in space. Towards an in-orbit demonstration on such a platform, we have developed a CubeSat-compatible prototype of an optical frequency reference based on the D2-transition in rubidium. A frequency instability of 1.7×10 −12 at 1 s averaging time is achieved. The optical module occupies a volume of 35 cm 3 , weighs 73 g and consumes 780 mW of power.

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Section: Discussion and Outlookmentioning

confidence: 99%

Section: Performancementioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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A Prototype of a Compact Rubidium-Based Optical Frequency Reference for Operation on Nanosatellites

Strangfeld,

Kanthak,

Schiemangk

et al. 2021

Preprint

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“…The demonstrator consists of two sub-units (see Fig 2a), a control system and a science package, with optical and electrical signals transferred through a 75 m umbilical. The control system primarily consists of a laser system comprised of two Alter UK REMOTE external-cavity diode lasers (ECDLs) [45], each locked to different atomic transitions. ECDL 1 is used to produce repump light and is stabilised to a rubidium reference via saturated absorption spectroscopy [46,47].…”

Section: Experimental Systemmentioning

confidence: 99%

Magneto-optical trapping in a near-suface borehole

et al. 2023

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Borehole gravity sensing can be used in a number of applications to measure features around a well, including rock-type change mapping and determination of reservoir porosity. Quantum technology gravity sensors, based on atom interferometry, have the ability to offer increased survey speeds and reduced need for calibration. While surface sensors have been demonstrated in real world environments, significant improvements in robustness and reductions to radial size, weight, and power consumption are required for such devices to be deployed in boreholes. To realise the first step towards the deployment of cold atom-based sensors down boreholes, we demonstrate a borehole-deployable magneto-optical trap, the core package of many cold atom-based systems. The enclosure containing the magneto-optical trap itself had an outer radius of (60 ± 0.1) mm at its widest point and a length of (890 ± 5) mm. This system was used to generate atom clouds at 1 m intervals in a 14 cm wide, 50 m deep borehole, to simulate how in-borehole gravity surveys are performed. During the survey, the system generated, on average, clouds of (3.0 ± 0.1) × 105 87Rb atoms with the standard deviation in atom number across the survey observed to be as low as 8.9 × 104.

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“…These require a suitable external laser input and electronics control unit. Commercial laser packages with integrated reference cells [25] leave only the development of additional electronics and software open to the user. We present a standalone, hand-sized plug and play AOFR system based on the laser module we presented in [26] with a distributed feedback (DFB) laser diode utilizing the D2-transition of warm rubidium vapor at 780 nm.…”

Section: Introductionmentioning

confidence: 99%

Compact Plug and Play Optical Frequency Reference Device Based on Doppler-Free Spectroscopy of Rubidium Vapor

Strangfeld,

Wiegand,

Kluge

et al. 2022

Preprint

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Compactness, robustness and autonomy of optical frequency references are prerequisites for reliable operation in mobile systems, on ground as well as in space. We present a standalone plug and play optical frequency reference device based on frequency modulation spectroscopy of the D2-transition in rubidium at 780 nm. After a single button press the hand-sized laser module, based on the micro-integrated laser-optical bench described in [J. Opt. Soc. Am. B 38, 1885-1891 (2021)], works fully autonomous and generates 6 mW of frequency stabilized light with a relative frequency instability of 1.4×10 −12 at 1 s and below 10 −11 at 10 5 s averaging time. We describe the design of the device, investigate the thermal characteristics affecting the output frequency and demonstrate short-term frequency stability improvement by a Bayesian optimizer varying the modulation parameters.

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The application of telecoms-style packaging techniques to narrow linewidth laser modules for quantum technologies

Cited by 3 publications

References 5 publications

A Prototype of a Compact Rubidium-Based Optical Frequency Reference for Operation on Nanosatellites

A Prototype of a Compact Rubidium-Based Optical Frequency Reference for Operation on Nanosatellites

Magneto-optical trapping in a near-suface borehole

Compact Plug and Play Optical Frequency Reference Device Based on Doppler-Free Spectroscopy of Rubidium Vapor

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