Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generation of bright squeezed light at 1.06 $\mu m$ using cascaded
  non-linearities in a triply resonant c.w. PPLN OPO   We have used an ultra-low threshold continuous-wave Optical Parametric
Oscillator (OPO) to reduce the quantum fluctuations of the reflected pump beam
below the shot noise limit. The OPO consisted of a triply resonant cavity
containing a Periodically-Poled Lithium Niobate crystal pumped by a Nd:YAG
laser and giving signal and idler wavelengths close to 2.12 microns and a
threshold as low as 300 microwatts. We detected the quantum fluctuations of the
pump beam reflected by the OPO using a slightly modified homodyne detection
technique. The measured noise reduction was 30 % (inferred noise reduction at
the output of the OPO 38 %).

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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
30
The categories of this paper are: q-alg