Employing double wall carbon nanotube (DWCNT) grown by vertical growth method as saturable absorbe(SA)r, and we realize a watt-level Q-switched mode-locking operation in an all-solid-state Tm,Ho:LiLuF4 (Tm,Ho:LLF) laser with high power. When the pump power is greater than 7.76 W, the laser operation enters a stable Q-switched mode-locking state. When the pump power is increased to 20 W, the maximum output power is 1480 mW under 9% output coupled mirror. In this case, the central wavelength is 1882 nm and the repetition frequency is 55.55MHz, corresponding a maximum single pulse energy of 2.88 nJ, and modulation depth in Q-switching envelopes is close to 100%.
The reflection-type MoS2 saturable absorber was prepared by the spin coating method. The silver plated reflector was made by plating the sliver reflective film on a Hydrophilic treated quartz sheet. The Tm,Ho:LiLuF4 all solid-state laser with MoS2 reflective saturable absorber is realized in Q-switched mode-locking operation. The laser maximum output power is 156 mW, typical Q-switched pulse envelope repetition frequency is 10KHz and the pulse width about 200μs. The repetition frequency of the mode-locked pulse sequence is 100 MHz and the modulation depth is close to 100%. The results show that the reflective MoS2 material can be used as a saturable absorber for all solid-state lasers in 2μm band.
By employing Graphene Oxide (GO) grown by vertical growth method as a saturable absorber, we first demonstrated a stable passively Q-switched mode-locked (QML) all-solid-state Tm:LLF laser. when the LD pump power is higher than 8.58W, the laser operation gets into a stable Q-switched mode-locked state, corresponding mode-locked pulse repetition frequency is 104.2MHz. The modulation depth of mode-locked pulses in the Q envelope is close to 100%. The results show that graphene oxide is a promising SA for QML solid-state laser in the 2μm wavelength
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.