We demonstrate,for the first time and to the best of our knowledge,a continuous-wave and broadly tunable Cr:ZnSe bulk crystal laser pumped by a Tm:YLF bulk laser with 1845 nm and 1887 nm wavelengths.We compare the out...We demonstrate,for the first time and to the best of our knowledge,a continuous-wave and broadly tunable Cr:ZnSe bulk crystal laser pumped by a Tm:YLF bulk laser with 1845 nm and 1887 nm wavelengths.We compare the output characteristics and wavelength-tuning properties of the continuous-wave operation at the two pump wavelengths.In the continuous-wave operation,the maximum output power is 1.79 W with a slope efficiency of 28.8%,which is achieved at the pump wavelength of 1887 nm.In addition,a tuning range of~700 nm(696 nm)from 2040 nm to 2736 nm by using a reflective diffraction grating is realized.To the best of our knowledge,this is the widest tuning range realized so far for Cr:ZnSe bulk crystal tuned by gratings.展开更多
We explored Q-switching mechanism for the newly proposed Tm/Ho composite laser via developing a hybrid resonator for separating the intra-cavity Tm laser modulated by the saturable absorber(SA).With a Cr:ZnSe SA,succe...We explored Q-switching mechanism for the newly proposed Tm/Ho composite laser via developing a hybrid resonator for separating the intra-cavity Tm laser modulated by the saturable absorber(SA).With a Cr:ZnSe SA,successful passively Q-switching process with the maximum average output power of 474 mW and the shortest pulse width of 145 ns were obtained at the pulse repetition frequency of 7.14 kHz,where dual wavelength oscillation in both 2090 nm and 2097 nm was observed.This work provides an effective way for a direct laser diode(LD)pumped Q-switched Ho laser,which is compact and accessible.Furthermore,the current SA could be replaced by the 2D materials with broadband saturable absorption such as topological insulators or transition-metal dichalcogenides for seeking novel PQS lasers.展开更多
基金supported by the Key-Area Research and Development Program of Guangdong Province(No.2023B0909010002)the Science and Technology PlanningProjectofShenzhenMunicipality(No.JCYJ20190808145016980)。
文摘We demonstrate,for the first time and to the best of our knowledge,a continuous-wave and broadly tunable Cr:ZnSe bulk crystal laser pumped by a Tm:YLF bulk laser with 1845 nm and 1887 nm wavelengths.We compare the output characteristics and wavelength-tuning properties of the continuous-wave operation at the two pump wavelengths.In the continuous-wave operation,the maximum output power is 1.79 W with a slope efficiency of 28.8%,which is achieved at the pump wavelength of 1887 nm.In addition,a tuning range of~700 nm(696 nm)from 2040 nm to 2736 nm by using a reflective diffraction grating is realized.To the best of our knowledge,this is the widest tuning range realized so far for Cr:ZnSe bulk crystal tuned by gratings.
基金We are grateful for financial supports from National Key Research and Development Program of China(Grant No.2017YFB1104500)Natural National Science Foundation of China(NSFC)(Grant No.61875200)China Postdoctoral Science Foundation(Grant No.2018M642575)。
文摘We explored Q-switching mechanism for the newly proposed Tm/Ho composite laser via developing a hybrid resonator for separating the intra-cavity Tm laser modulated by the saturable absorber(SA).With a Cr:ZnSe SA,successful passively Q-switching process with the maximum average output power of 474 mW and the shortest pulse width of 145 ns were obtained at the pulse repetition frequency of 7.14 kHz,where dual wavelength oscillation in both 2090 nm and 2097 nm was observed.This work provides an effective way for a direct laser diode(LD)pumped Q-switched Ho laser,which is compact and accessible.Furthermore,the current SA could be replaced by the 2D materials with broadband saturable absorption such as topological insulators or transition-metal dichalcogenides for seeking novel PQS lasers.
