关于氦氖激光器声光调制锁模的实验研究
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摘要
本实验中,将声光调制锁模器放置在氦氖激光器中的谐振腔里,控制谐振腔中的增益,使声波的频率调制与激光器固有频率间隔一致,从而达既可以到锁模的效果,又可以增加增益,减少能量损耗。通过功率计与示波器检测出激光脉宽、脉冲周、纵模间隔等物理量,与理论值进行比较,判断激光锁模实验的效果。本实验使用的氦氖激光器腔长大于1.55m,是双面全反射腔,可以利用激光锁模技术得到纵模进行比较,从而获得单色性好的超短脉冲激光。
In this experiment,acousto-optic modulation mode locking device is arranged in the helium neon laser resonant cavity,and cavity gain is controlled,when the acoustic wave frequency modulation and laser frequency interval is consistent,the effect of mode locking is appeared.In order to achieve the effect of the mode locking,the gain can be increased,and the energy loss can be reduced.By power meter and oscilloscope,a series of data such as laser pulse width,pulse period,longitudinal mode interval and so on are gotten,which then compared with the theoretical value,the effect of mode locking is evaluated.The helium neon laser cavity length is larger than 1.55 m,which is a double side total reflection cavity,which can be compared with the laser mode locking technology to obtain the ultra short pulse laser.
In this experiment,acousto-optic modulation mode locking device is arranged in the helium neon laser resonant cavity,and cavity gain is controlled,when the acoustic wave frequency modulation and laser frequency interval is consistent,the effect of mode locking is appeared.In order to achieve the effect of the mode locking,the gain can be increased,and the energy loss can be reduced.By power meter and oscilloscope,a series of data such as laser pulse width,pulse period,longitudinal mode interval and so on are gotten,which then compared with the theoretical value,the effect of mode locking is evaluated.The helium neon laser cavity length is larger than 1.55 m,which is a double side total reflection cavity,which can be compared with the laser mode locking technology to obtain the ultra short pulse laser.
引文
[1]楼祺洪,从征.气体激光器的发展近况[J].激光与光电子学进展,1996(03):25-30,43-46.
[2]支婷婷,陈兰荣.从锁模脉冲序列中先后选出两个单脉冲的同步研究[J].激光技术,1991,15(05):18-19.
[3]邢新华.腔倒空中声光器件对脉宽的影响及脉宽压缩的研究[J].光学精密工程,1990(01):12-13.
[4]贾玉磊,令维军.LD侧面泵浦全固态声光锁模激光器[J].科学技术与工程,2009,9(08):4-7,8-9.
[5]谭中奇,吴素勇,于旭东,等.氦氖激光器的横模选择实验[J].大学物理实验,2016(6):15-17.
[6]邱林.氦氖激光的特性和应用[J].遵义师范学院学报,2004,6(3):117-356.
[7]陆治国.氦氖激光器的输出功率与谐振腔结构的关系[J].西北大学学报:自然科学版,1979(01):23-24.
[8]张秀峰,王培昌,常治学.声光调制系统驱动器的研制[J].压电与声光,2007,29(03):15-19,23-24.
[9]张鹏,于未茗,宋晏蓉,等.SESAM锁模OP-VECSELs技术[J].激光技术,2007,31(03):15-18.
[2]支婷婷,陈兰荣.从锁模脉冲序列中先后选出两个单脉冲的同步研究[J].激光技术,1991,15(05):18-19.
[3]邢新华.腔倒空中声光器件对脉宽的影响及脉宽压缩的研究[J].光学精密工程,1990(01):12-13.
[4]贾玉磊,令维军.LD侧面泵浦全固态声光锁模激光器[J].科学技术与工程,2009,9(08):4-7,8-9.
[5]谭中奇,吴素勇,于旭东,等.氦氖激光器的横模选择实验[J].大学物理实验,2016(6):15-17.
[6]邱林.氦氖激光的特性和应用[J].遵义师范学院学报,2004,6(3):117-356.
[7]陆治国.氦氖激光器的输出功率与谐振腔结构的关系[J].西北大学学报:自然科学版,1979(01):23-24.
[8]张秀峰,王培昌,常治学.声光调制系统驱动器的研制[J].压电与声光,2007,29(03):15-19,23-24.
[9]张鹏,于未茗,宋晏蓉,等.SESAM锁模OP-VECSELs技术[J].激光技术,2007,31(03):15-18.