Browsing by Author "Lin, K. Y."

Now showing 1 - 2 of 2

Femtosecond high-power spontaneous mode-locked operation in vertical-external cavity surface-emitting laser with gigahertz oscillation
(2011-12-01)
Chen, Y. F.
;
Lee, Y. C.
;
Liang, H. C.
;
Lin, K. Y.
;
Su, K. W.
We realize a femtosecond high-power spontaneous mode-locked operation with gigahertz oscillation in a vertical-external cavity surface-emitting laser under the condition of eliminating the internal and external unwanted reflection. We find that the reflectivity of the output coupler has a significant influence not only on the output power but also on the output pulse duration. With an incident pump power of 20W, we have achieved 2: 35W of average output power with 778 fs pulse duration at a repetition rate of 2: 17 GHz. The shortest pulse duration was 654 fs at an average output power of 0.45W. (C) 2011 Optical Society of America
Precise measurement of group refractive indices and temperature dependence of refractive index for Nd-doped yttrium orthovanadate by intracavity spontaneous mode locking
(2011-10-01)
Liang, H. C.
;
Lin, K. Y.
;
Lee, Y. C.
;
Chen, Y. F.
;
電子物理學系
We report on a novel method based on intracavity spontaneous mode locking to precisely measure the group refractive indices and temperature dependence of refractive index of Nd : YVO(4) crystal at the wavelength of 1064 nm. All the experimental results are found to agree very well with the most recent measured values. We also confirm that the developed method is applicable to measuring the group refractive indices and the temperature dependence of the refractive indices of other vanadate crystals, as well as nonlinear crystals. (C) 2011 Optical Society of America