摘要
运用矩阵光学的方法对多棒串接固体激光器的谐振腔参数及其在平平腔时的热稳条件进行了研究 ,并计算了六棒串接平平腔固体激光器的稳定区 .结果证明 :多棒串接固体激光器的稳定区和非稳区相互间隔 ,在平平腔总腔长、激光棒数量n和棒间距L一定的条件下 ,当采用对称结构时 (L1 =L2 ) ,则谐振腔的每段稳定区均达到最大 ;且只要平平腔满足L1 =L2 =L 2以及热焦距f在大于某个下限值fm 时 ,稳定性条件 0 <G1 G2 <1几乎总是满足 (除了几个奇异点外 ) ,而且热焦距f值在小于这个下限值fm 时 ,谐振腔进入深度非稳区 ,这个下限值fm 由棒间距L和棒数n决定 ,其表达式为fm =0 .2 5L(当 2≤n≤ 10 )
Resonator parameters and thereto-stability conditions for plane-plane resonator of multi-rod series connection solid-state lasers were investigated by means of matrix optics. Stability areas of six-rod-connection solid-state lasers in a plane-plane resonator were calculated. The results show that stability areas and non-stability areas of the multi-rod series-connection solid-state lasers distribute alternately. If the length of the resonator, the number( n) of laser rods and the spacing ( L) between two neighbouring laser rods are given and a symmetry configuration ( L-1 = L-2) is adopted, then every stability area reaches a largest extent. If the condition ( L-1 = L-2 = L/2) is supposed in plane-plane resonator and the thereto focus length (f) is greater than a lower limit value (f(m)), the stability condition (0 < G(1) G(2) < 1) is almost satisfied except several oddity values. Furthermore, when the thermo focus length (f) is smaller than the lower limit value (f(m)), the resonator come into a deep non-stability area. The lower limit value (f(m)) is determined by the number ( n) of laser rods and the spacing ( L) between two rods, the formula is f(m) = 0.25 L (if 2 less than or equal to n less than or equal to 10).
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第6期1396-1402,共7页
Acta Physica Sinica
关键词
多棒串接固体激光器
谐振腔
矩阵光学
热稳条件
稳定区
multirod series connection solid state lasers
stability areas
thereto-stability conditions
