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pith:65YZHKFY

pith:2026:65YZHKFYLXR772FE6D3L6UEFML

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Line-scanning Brillouin microscopy with multiplexed two-stage VIPA spectrometer

Chenjun Shi, Jitao Zhang

Cascading two VIPA etalons achieves 57 dB noise suppression in line-scanning Brillouin microscopy without a gas chamber.

arxiv:2604.17101 v1 · 2026-04-18 · physics.optics

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Claims

C1strongest claim

we developed a multiplexed Brillouin spectrometer for LSBM that increased the noise suppression to 57 dB without using any gas chamber. This is achieved by cascading two VIPA etalons with parallel dispersion axes in the spectrometer, where the first VIPA acts as a band-pass filter and the second as spectrum analyzer.

C2weakest assumption

That cascading the two VIPA etalons with parallel dispersion axes will maintain the required spectral resolution and line-scanning speed while delivering the stated 57 dB suppression in real biological samples without introducing new optical artifacts or alignment instabilities.

C3one line summary

A multiplexed two-stage VIPA spectrometer for line-scanning Brillouin microscopy achieves 57 dB noise suppression without gas chambers by using the first VIPA as a bandpass filter and the second as a spectrum analyzer.

References

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[1] This interaction induces a frequency shift in the scattered light, known as the Brillouin shift, which carries the viscoelastic information of the material [1]

[2] Experiments 2.1 Optical setup Fig. 1. (a) Principle of the multiplexed two-stage VIPAs spectrometer. Cyl: cylindrical lens; SL: spherical lens. (b) Optical setup of the inverted co-axial LSBM. L1-L5:

[3] After closing the slit, the laser noise was significantly rejected

[4] Discussion & Conclusion Regarding the spectral filter unit in Fig.1(b), the selection of VIPA1’s FSR is critical. Since the noise-rejection capability relies on how much Slit2 can be closed without bl

[5] Nonlinear optics 2008

Receipt and verification

First computed	2026-06-12T01:09:27.812534Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f77193a8b85de3ffe8a4f0f6bf508562ed4d124c9b1a526d65c7111369d5f9c8

Aliases

arxiv: 2604.17101 · arxiv_version: 2604.17101v1 · doi: 10.48550/arxiv.2604.17101 · pith_short_12: 65YZHKFYLXR7 · pith_short_16: 65YZHKFYLXR772FE · pith_short_8: 65YZHKFY

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/65YZHKFYLXR772FE6D3L6UEFML \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f77193a8b85de3ffe8a4f0f6bf508562ed4d124c9b1a526d65c7111369d5f9c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d95a1dd9dbfae9205469224ece4db2d43e2fd58b4acb14a0d8f6f98320def4ef",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2026-04-18T18:28:05Z",
    "title_canon_sha256": "3bb14469ac59ab8fd2bf728cd08d8484c6b43ef51647e0f140e61e39bd7091a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.17101",
    "kind": "arxiv",
    "version": 1
  }
}