INTENSITY NOISE SQUEEZING OF LASER DIODE WITH INPHASE EXTERNAL WEAK FEEDBACK BY HALF WAVE PLATE | Zendy

Ruifang Dong | Zendy; Junxiang Zhang | Zendy; Tiancai Zhang | Zendy; Jing Zhang | Zendy; Changde Xie | Zendy; Kunchi Peng | Zendy

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INTENSITY NOISE SQUEEZING OF LASER DIODE WITH INPHASE EXTERNAL WEAK FEEDBACK BY HALF WAVE PLATE

Author(s) -

Ruifang Dong,

Junxiang Zhang,

Tiancai Zhang,

Jing Zhang,

Changde Xie,

Kunchi Peng

Publication year - 2001

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.50.462

Subject(s) - optics , physics , laser , waveplate , birefringence , photon , polarization (electrochemistry) , diode , collimated light , laser diode , optoelectronics , chemistry

Due to the birefringence effect of the quantum well laser and the collimating lens in a low temperature cryostat, the polarization of the output light was changed, therefore the photon number fluctuation of the output individual linearly polarized mode was increased. By compensating the birefringence with a quarter wave plate, and utilizing an inphase external weak feedback to laser diode laser by means of residuary reflection from the two surfaces of a half wave plate, we obtained the output light of 24mW with the photon number fluctuation 2.8dB below the Standard Quantum Limit at the pump current of 34.65mA.

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