公开(公告)号：US4056290A

公开(公告)日：1977-11-01

申请号：US667911

申请日：1976-03-18

Applicant: Lloyd C. Bobb ,  Kimball Kramer

Inventor： Lloyd C. Bobb ,  Kimball Kramer

IPC: G02F1/37 ,  H01S3/108 ,  H01S3/109 ,  H02M5/04

CPC classification number: G02F1/37 ,  H01S3/1086 ,  H01S3/109

Abstract: The frequency of a laser beam can be changed by directing the laser beam through a crystal that has paraelectric and ferroelectric states, above and below a Curie transition temperature, respectively. The crystal is maintained at a constant temperature slightly above its Curie transition temperature when no change in the frequency of the laser beam is desired; and a voltage is applied across the crystal to drive it from its paraelectric into its ferroelectric state when a relatively large change in the frequency of the laser beam is desired.

Abstract translation: 可以通过将激光束引导通过分别具有高于和低于居里转变温度的顺电和铁电状态的晶体来改变激光束的频率。 当不需要激光束的频率变化时，晶体保持在略高于其居里转变温度的恒定温度; 并且当需要激光束的频率相对较大的变化时，在晶体两端施加电压以将其从其顺向驱动到其铁电状态。