Abstract

We consider the recent results on creation of mobile ultra-stable (10¹⁵ – 10^-16) lasers of the new generation, including compact diode-pumping crystal lasers. There are presented principal schemes of highly sensitive laser detectors of gravitational waves against periodic astrophysical objects -pulsars- using highly stable laser radiation. As a source of gravitational waves we chose the isolated 1.6-ms pulsar PSR 1937+21. The upper limit of the dimensionless amplitude of the gravitational wave h≤7·10^-27. We are hoping that with detectors using stable lasers this problem can be solved by the heterodyne method. Let us next consider the recent results of theoretical and experimental investigation of new type of amplified optical bistability observed in active interferometer with saturated, absorbing and amplifying mediums at excitation by external signal. The observation of effective suppression of noise at three or four order in the regime of amplified optical bistability was carried out for the first time. The effects of strong amplification of input signal at 4 or 5 order and anomalous increasing of interferometer quality of up to 10¹¹ - 10¹² open a new way of creation of coherent optical souses with infralower noise level for precise measurements of small mechanic displacements.

© 1996 IEEE