title: Cr:Forsterite-laser-based fiber-optic nonlinear endoscope with higher efficiencies.
abstract: We demonstrate a beam-scanning nonlinear light endoscope based on a flexible fiber bundle. Excited with a femtosecond Cr:Forsterite laser, the degradation in multiphoton multiharmonic excitation efficiency due to the pulse-broadening effect is significantly reduced without utilizing any external devices. The system resolution has been characterized to be 5.4 microm in the two-photon fluorescence endoscope, limited by the sampling theory. Finally, several image examples have been given.
authors.affiliation: Department of Electrical Engineering and Graduate Institute of Electro-Optical Engineering, National Taiwan University, Taipei 10617, Taiwan, Republic of China.
authors.forename: Ming-Che
authors.initials: MC
authors.lastname: Chan
authors.forename: Shi-Wei
authors.initials: SW
authors.lastname: Chu
authors.forename: Chien-Hung
authors.initials: CH
authors.lastname: Tseng
authors.forename: Yu-Chieh
authors.initials: YC
authors.lastname: Wen
authors.forename: Yi-Hsien
authors.initials: YH
authors.lastname: Chen
authors.forename: Guo-Dung John
authors.initials: GD
authors.lastname: Su
authors.forename: Chi-Kuang
authors.initials: CK
authors.lastname: Sun
mesh_terms: D000199:Actins / Q000648:ultrastructure; D000818:Animals; D002417:Cattle; D002857:Chromium; D019723:Endoscopes; D005336:Fiber Optic Technology / Q000295:instrumentation; D007834:Lasers; D008853:Microscopy / Q000295:instrumentation / Q000379:methods*; D009132:Muscles / Q000648:ultrastructure; D055100:Optical Fibers; D017655:Silicon Compounds; D013710:Tendons / Q000648:ultrastructure
chemical_list: D000199:Actins; D017655:Silicon Compounds; C503823:forsterite; D002857:Chromium