Nonlinear optical studies in semiconductor-doped glasses under femtosecond pulse excitation

Pramana

S M Oak²  K S Bindra¹  C P Singh1¹ 

[1] Laser Physics Applications Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India$$;Solid State Laser Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India$$

关键词: Nonlinear optics;    semiconductor-doped glasses;    Z-scan.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Nonlinear optical studies in semiconductor-doped glasses (SDGs) are performed under femtosecond laser pulse excitation. Z-scan experiments with 800 nm wave- length pulses are used to excite SDG samples in the resonance and non-resonance regimes. Schott colour glass filter OG 515 shows stronger two-photon absorption than GG 420 and both the samples exhibit positive nonlinearity. However, in resonantly excited RG 850 the intensity-dependent Z-scan shows transition from saturable to reverse saturable absorption behaviour with the increase in intensity.

【 授权许可】

Unknown