Experimental study of a hot-cell-free CW CO2 laser at 11μm wavelength region hot bands

YANG Yuan-jie; LI Yu-de; LIU Jing-lun; ZHANG Li-jun; XU De-fu

The purpose is to describe the design and the construction of a no-flow conventional CW CO2 laser with line selected by concave grating.In order to obtain the lines at 11μm wavelength region,a concave grating(150lines/mm,blazed at 10.6μm) with a 10m radius curvature and a longer cavity(4.5m) is employed to increase the resolution of the cavity without a hot CO2 absorption cell in the cavity.In this laser,besides more than 100 laser lines observed from R(56) to P(56) in the regular 0001-[1000,0200]Ⅰ,Ⅱ band,another 16 lines in 11μm wavelength region including 7 lines in the 0111-0310 band,1 line in the 0011-1110 band,5 lines in the isotope C13O2160001-1000 band and 3 lines in the isotope C13O2180001-1000 band,are also observed.The output power of every line is above 1.6W.

Corresponding author: LI Yu-de, liyude15@yahoo.com.cn;

1. Department of Optoelectronic Science and Technology, School of Electronic and Information Science, Sichuan University, Chengdu 610064, China

Received Date: 2005-01-13

Accepted Date: 2005-03-03

Available Online: 2006-03-25

Abstract: The purpose is to describe the design and the construction of a no-flow conventional CW CO2 laser with line selected by concave grating.In order to obtain the lines at 11μm wavelength region,a concave grating(150lines/mm,blazed at 10.6μm) with a 10m radius curvature and a longer cavity(4.5m) is employed to increase the resolution of the cavity without a hot CO2 absorption cell in the cavity.In this laser,besides more than 100 laser lines observed from R(56) to P(56) in the regular 0001-[1000,0200]Ⅰ,Ⅱ band,another 16 lines in 11μm wavelength region including 7 lines in the 0111-0310 band,1 line in the 0011-1110 band,5 lines in the isotope C13O2160001-1000 band and 3 lines in the isotope C13O2180001-1000 band,are also observed.The output power of every line is above 1.6W.

HTML

Reference (18)

[1]	PATLE C K N.Interpretation of CO2 optical maser experiments[J].Phys Rev Lett,1964,12(21):588～590.
[2]	PATLE C K N.Continuous-wave laser action on vibrational-rotational transitions of CO2[J].Phys Rev,1964,136(5):A1187～A1193.
[3]	YANG F,HUANG W,ZHANG B et al.Temperature field distribution and thermal distortion of thin film coatings irradiated by CO2 laser[J].Laser Technology,2004,28(3):255～258(in Chinese).
[4]	LIU J G,CHEN C H,ZHENG T Sh et al.Experimental study of CO2laser induced locally chemical depositions of copper[J].Laser Technology,2003,27 (1):16～18 (in Chinese).
[5]	CHEN C H,LIU J G,ZHENG T Sh et al.The research of adbesion of metal layer deposited on epoxyresin board by CO2 laser induced from aqueous solution[J].Laser Technology,2004,28 (1):26～29 (in Chinese).
[6]	LIU J H,XU R F.Laser devices and techniques[M].Beijing:Beijing Institute of Technology Press,1995.35 (in Chinese).
[7]	REID J,SIEMSEN K.New CO2 laser bands in 9-11 μm wavelength region[J].A P L,1976,29(4):250～251.
[8]	REID J,SIEMSEN K.Laser power and gain measurement on the sequence band of CO2[J].J A P,1977,48(7):2712～2717.
[9]	WHITFORD B G,SIEMSEN K J,RIED J.Heterodyne frequence measurements of CO2 laser hot-band transitions[J].Opt Commun,1977,22:261～264.
[10]	SOLODUKHIN A S.Hot-cell-free sequence-band CO2 laser[J].Journal of Modern Optics,1987,34(4):577～580.
[11]	LI Y D,YI H Y,ZHOU Y W.Experimental study of a CW CO2 laser on the sequence bands[J].Chinese Applied Laser,1999,19 (6):359～360(in Chinese).
[12]	EVENSON K M,CHOU Ch Ch,BACH B W et al.New CW CO2 laser lines:The 9μm hot band[J].IEEE J Q E,1994,30 (5):1187～1188.
[13]	CHOU Ch Ch,EVENSON K M,ZINK K R et al.New CO2 laser lines in 11μ m wavelength region:New hot bands[J].IEEE J Q E,1995,31 (2):343～345.
[14]	LIN J Q,WANG X H,HAN T L et al.Isotope 13CO2 laser and its application[J].Journal of Optoelectronics · Laser,1996,7(2):119～124(in Chinese).
[15]	SIDDOWAY J C.Calculated and observed laser transitions using C14O216[J].J A P,1968,39(10):4854～4855.
[16]	FREED C,ROSS A H M,DONNELL R G O.Determination of laser line frequencies and vibrational-rotational constants of 12C18O2,13C16O2,and 13C18O2 isotopes from measurements of CW beat frequencies with fast HgCdTe photodiodes and microwave frequency counters[J].J Mol Spectrosc,1974,49(3):439～453.
[17]	MA Y W,CHEN Y Q.Laser devices[M].Hangzhou:Zhejiang University Press,2002.56(in Chinese).
[18]	CAI B R,WANG R F,WEI G H et al.Laser devices[M].Changsha:Hunan Science and Technology Press,1981.92(in Chinese).

Experimental study of a hot-cell-free CW CO2 laser at 11μm wavelength region hot bands

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views