DFC BC / DFC BCF / DFC MD

フレキシブルビート検出ユニット

フレキシブルビート検出ユニット
DFC及びDL proと使用できるようデザイン
安定、コンパクト

２種類のフレキシブルなモジュールで構成されるトプティカのビート検出ユニット：DFC BC (或いは DFC BCF)及びDFC MD.ビーム結合とビーム検出を２つのユニットに分けることにより、異なる配置が可能になります。
DFC BCとDFC MDは、とりわけDFCとトプティカのDL proチューナブルダイオードレーザーシリーズとの組み合わせ様にデザインされていますが、その他のCWレーザーで使用することも可能です。

DFC BC Beam Combiner	DFC + cw-laser beam combiner Free-space optics, fiber FC/APC fiber coupled Available from 420 to 2000 nm Adjustable power ratio comb vs. cw Comb-free cw output for experiment Adjustable split ratio for cw laser Wavelength range > 50 nm (depends on central wavelength) To be used in combination with DFC MD for beat detection (SM/PM fiber included) Dimensions (H x W x D): 49 x 100 x 100 mm³
DFC BCF Beam Combiner Fiber	DFC + cw-laser fiber beam combiner Available wavelengths 980 nm, 1030 nm, 1300 nm, 1550 nm (other wavelengths on request) Fixed power ratio comb vs. cw To be used in combination with DFC MD for beat detection Dimensions (H x W x D): 23 x 90 x 200 mm³
DFC MD Monochromatic Detector	Grating based tunable filter, 10 GHz bandwidth, < 1 GHz resolution Low-noise photo diode for beat detection Available from 420 to 2000 nm RF output suitable as direct input for TOPTICA locking electroncis Stand-alone narrow band frequency filter Wavelength range 50 nm (depends on central wavelength) Dimensions (H x W x D): 64 x 60 x 120 mm³ Measurement of the beat frequency using the beat monitoring unit of the DFC CORE module Active locking of the cw laser to the DFC (requires additional locking electronics for the cw laser) Locking of the DFC to the cw laser (requires DFC CORE+ version)

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Specification

	DFC BC	DFC BCF	DFC MD
Inputs	1. Frequency comb: Fiber-coupled (FC/APC fiber coupler included), > 0.25 mW/nm recommended 2. cw laser > 100 μW recommended, 1 mW ideal (fiber-coupled, fiber coupler included)	1. Frequency Comb: Fiber-coupled (FC/APC) 2. cw-laser: Fiber-coupled (FC/APC)	Frequency comb + cw laser: Fiber-coupled (fiber coupler included)
Outputs	1. Frequency comb + cw laser: Fiber-coupled, (fiber coupler and SM/PM fiber included) 2. cw laser: Free beam (fiber coupling optional)	1. Frequency comb + cw laser: Fiber-coupled (FC/APC) 2. Cw laser: Fiber-coupled (FC/APC)	RF signal, amplified for use with mFALC
Wavelength		420 nm - 2000 nm	420 nm - 2000 nm
Spectral width of operating range	approx. 50 nm (depends on wavelength)	approx. 100 nm (depends on wavelength and splitting ratio)	50 nm (depends on wavelength)
Filter element	n.a.	n.a.	10 GHz bandwidth grating (other bandwidths on request) Optical resolution > 50.000 Tuning via manual adjustment of µm-screw incl. scale reading Tuning resolution < 1 GHz (typ.)
Dimensions (HxWxD)	49 x 100 x 100 mm³	23 x 90 x 200 mm³	64 x 60 x 120 mm³

Options
- Modular DFC Extensions: Various extension modules are available that convert the offset-free fundamental output of the DFC CORE + from 1560 nm to any desired wavelength between 420 nm and 2000 nm
Applications
- Optical Clocks
- Microwave Generation
- Laser Reference
- High-resolution Spectroscopy
- Dual-comb Spectroscopy
- Direct Frequency Comb Spectroscopy
- Interferometry
- Transportable AMO Systems
- Quantum Computing
- CEP-stable Seeders
Literature
- Scientific Article: E. Benkler et al., End-to-end topology for fiber comb based optical frequency transfer at the 10⁻²¹ level, Optics Express [27], 36886 (2019)
- Scientific Article: E. C. Cook et al., Resonant two-photon spectroscopy of the 2s3d ¹D₂ level of neutral ⁹Be Phys. Rev. Applied 101, 042503 (2020)
- Scientific Article: M. Collombon et al., Experimental Demonstration of Three-Photon Coherent Population Trapping in an Ion Cloud, Phys. Rev. Applied 12, 034035, (2019)
- Scientific Article: M. Collombon et al., Phase transfer between three visible lasers for coherent population trapping, Optics Letters Vol. 44, Issue 4 (2019)
- Scientific Article: A. Liehl et al., Ultrabroadband out-of-loop characterization of the carrier-envelope phase noise of an offset-free Er:fiber frequency comb. Optics Letters Vol. 42, Issue 10 (2017)
- Scientific Article: T. Puppe et al., Characterization of a DFG comb showing quadratic scaling of the phase noise with frequency, Optics Letters Vol. 41, Issue 8 (2016)
- Scientific Article: G. Krauss et al., All-passive phase locking of a compact Er:fiber laser system, Opt. Lett., 36, 540 (2011)
- Scientific Article: D. Fehrenbacher et al., Free-running performance and full control of a passively phase-stable Er:fiber frequency comb. Optica Vol. 2, Issue 10 (2015)
- Scientific Article: R. Kliese et al., Difference-frequency combs in cold atom physics, arXiv:1605.02426v1 (2016)
- Scientific Article: D. Brida et al., Ultrabroadband Er:fiber lasers, Laser & Photonics Review 8(3) (2014)
Related Products
- DFC SEED
- DFC Extensions
- Complete DFC Systems
- Locking electronics
- Tunable Diode Lasers