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Effect of Caudal Keel Structure on the Head Stability of a Bionic Dolphin Robot. [PDF]
Biomimetics (Basel)Gong W, Wei Y, Chen H.
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13th Annual Symposium on Frequency Control, 1959
The frequency stability of an ammonia maser is ordinarily quite high for per iods of a few minutes. However, to preserve this stability for long periods of t ime hours and days requi res ra ther carefu l cont ro l of the pa rame te r s of the system which affect the frequency in par t icular the pressure, focuser voltage and cavity temperature. We have
J.S. Barnes, R. Mockler
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The frequency stability of an ammonia maser is ordinarily quite high for per iods of a few minutes. However, to preserve this stability for long periods of t ime hours and days requi res ra ther carefu l cont ro l of the pa rame te r s of the system which affect the frequency in par t icular the pressure, focuser voltage and cavity temperature. We have
J.S. Barnes, R. Mockler
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Submegahertz frequency-stabilized Nd:YAG oscillator
Optics Letters, 1982We have demonstrated a 5-msec, quasi-cw 10-Hz repetition-rate pulsed single-frequency Nd:YAG oscillator with a feedback-stabilized frequency bandwidth of less than 200 kHz.
Y L, Sun, R L, Byer
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External dye-laser frequency stabilizer
Optics Letters, 1984We describe an external dye-laser frequency stabilizer that combines an acousto-optic frequency shifter with a fast electro-optic phase modulator. A compensating electronic delay line in the crossover network provides a near-ideal transducer response while keeping the voltage across the electro-optic crystal away from the amplifier limits.
J L, Hall, T W, Hänsch
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NIM Frequency Stability Measurement System
1988 Conference on Precision Electromagnetic Measurements, 1988Advances in the frequency stability measurement at National Institute of Metrology (NIM) are presented. The performance of the automated measurement system is described. The measuring uncertainty is discussed in detail. It is pointed out that the noise floor is better than -176 dBc/Hz for the frequency-domain system, and is nearly sigma /sub y/( tau ...
null Rongcheng Li +4 more
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Frequency stability of a Zeeman-stabilized laser
Applied Optics, 1985The frequency of a commercial hard-sealed He–Ne laser has been stabilized to the center of the discharge gain profile using the mode splitting caused by an axial magnetic field. The absolute frequency has been measured repeatedly during intermittent operation over 20 months. Its drift over most of this period has been 2.6 ± 0.7 MHz/yr.
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