title: Evolution of multi-mode operation in vertical-external-cavity surface-emitting lasers.
abstract: The longitudinal multi-mode emission in a vertical-external-cavity surface-emitting laser is investigated using both single shot streak camera measurements and interferometric measurement techniques. For this, the laser is operated in the single- and two-color emission regime using both an etalon and a free-running configuration without etalon, respectively. The laser emission is analyzed with respect to pump power and output coupling losses for a long and for a short resonator. We observe a steep increase of emission bandwidth close to the laser threshold and monitor the transition between longitudinal single- and multi-mode operation. Additionally, the results indicate that a stable two-color operation is related to a sufficiently high number of oscillating longitudinal modes within each color.
authors: Matthias
authors: M
authors: Wichmann
authors: Mohammad Khaled
authors: MK
authors: Shakfa
authors: Fan
authors: F
authors: Zhang
authors: Bernd
authors: B
authors: Heinen
authors: Maik
authors: M
authors: Scheller
authors: Arash
authors: A
authors: Rahimi-Iman
authors: Wolfgang
authors: W
authors: Stolz
authors: Jerome V
authors: JV
authors: Moloney
authors: Stephan W
authors: SW
authors: Koch
authors: Martin
authors: M
authors: Koch
mesh_terms: D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D012542:Scattering, Radiation